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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
Sodium is produced by the electrolysis of |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/molten-548661" style="font-weight:bold;" target="_blank" title="Click to know more about MOLTEN">MOLTEN</a> sodium <a href="https://interviewquestions.tuteehub.com/tag/chloride-915854" style="font-weight:bold;" target="_blank" title="Click to know more about CHLORIDE">CHLORIDE</a></p><br/><br/><p>Sodium is produced by the electrolysis of molten sodium chloride.</p></body></html> | |
| 252. |
Entropy of Universe is always |
| Answer» <html><body><p> Increasing</p><br/><br/><p>The second law of thermodynamics can be <a href="https://interviewquestions.tuteehub.com/tag/stated-7313961" style="font-weight:bold;" target="_blank" title="Click to know more about STATED">STATED</a> in terms of entropy. In an irreversible <a href="https://interviewquestions.tuteehub.com/tag/process-11618" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESS">PROCESS</a>, entropy always <a href="https://interviewquestions.tuteehub.com/tag/increases-1040626" style="font-weight:bold;" target="_blank" title="Click to know more about INCREASES">INCREASES</a>, so the <a href="https://interviewquestions.tuteehub.com/tag/change-913808" style="font-weight:bold;" target="_blank" title="Click to know more about CHANGE">CHANGE</a> in entropy is positive. The total entropy of the universe is continually increasing. There is a strong <a href="https://interviewquestions.tuteehub.com/tag/connection-11321" style="font-weight:bold;" target="_blank" title="Click to know more about CONNECTION">CONNECTION</a> between probability and entropy.</p></body></html> | |
| 253. |
The manufacturing of iron from iron ore involves the process of |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/reduction-621019" style="font-weight:bold;" target="_blank" title="Click to know more about REDUCTION">REDUCTION</a><br/></p></body></html> | |
| 254. |
Which one of the following is most acidic? |
| Answer» <html><body><p> Al<sub>2</sub>O<sub>3</sub></p><br/><br/><p>Al<sub>2</sub>O<sub>3</sub> is most <a href="https://interviewquestions.tuteehub.com/tag/acidic-847601" style="font-weight:bold;" target="_blank" title="Click to know more about ACIDIC">ACIDIC</a>.</p></body></html> | |
| 255. |
Detergents used for cleaning clothes and utensils contain |
| Answer» <html><body><p> Sulphonates</p><br/><br/><p>Sulphonate is a <a href="https://interviewquestions.tuteehub.com/tag/detergent-437903" style="font-weight:bold;" target="_blank" title="Click to know more about DETERGENT">DETERGENT</a> <a href="https://interviewquestions.tuteehub.com/tag/used-2318798" style="font-weight:bold;" target="_blank" title="Click to know more about USED">USED</a> for <a href="https://interviewquestions.tuteehub.com/tag/cleaning-918595" style="font-weight:bold;" target="_blank" title="Click to know more about CLEANING">CLEANING</a> <a href="https://interviewquestions.tuteehub.com/tag/clothes-919776" style="font-weight:bold;" target="_blank" title="Click to know more about CLOTHES">CLOTHES</a> and <a href="https://interviewquestions.tuteehub.com/tag/utensils-1441777" style="font-weight:bold;" target="_blank" title="Click to know more about UTENSILS">UTENSILS</a>.</p></body></html> | |
| 256. |
What is the chemical name for ‘Baking Soda’ ? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/sodium-1215510" style="font-weight:bold;" target="_blank" title="Click to know more about SODIUM">SODIUM</a> bicarbonate</p><br/><br/><p>Sodium bicarbonate is the <a href="https://interviewquestions.tuteehub.com/tag/chemical-914796" style="font-weight:bold;" target="_blank" title="Click to know more about CHEMICAL">CHEMICAL</a> name for ‘Baking Soda’.</p></body></html> | |
| 257. |
The Fungus which is used in the alcohol industry is |
| Answer» <html><body><p> Yeast<br/></p><br/><br/><p>Yeasts are the main fermentor and alcohol producer in the production of wine, beer and other alcohol <a href="https://interviewquestions.tuteehub.com/tag/drinks-959703" style="font-weight:bold;" target="_blank" title="Click to know more about DRINKS">DRINKS</a>. The main yeast species used is <a href="https://interviewquestions.tuteehub.com/tag/saccharomyces-633822" style="font-weight:bold;" target="_blank" title="Click to know more about SACCHAROMYCES">SACCHAROMYCES</a> cerevisiae. It <a href="https://interviewquestions.tuteehub.com/tag/ferments-7682281" style="font-weight:bold;" target="_blank" title="Click to know more about FERMENTS">FERMENTS</a> the sugars, coming from different <a href="https://interviewquestions.tuteehub.com/tag/sources-1219409" style="font-weight:bold;" target="_blank" title="Click to know more about SOURCES">SOURCES</a>, e.g., <a href="https://interviewquestions.tuteehub.com/tag/grapes-1011007" style="font-weight:bold;" target="_blank" title="Click to know more about GRAPES">GRAPES</a> for wine, barley for beer, to alcohol and carbon dioxide.</p></body></html> | |
| 258. |
The acid which is secreted by the glands in the stomach wall is |
| Answer» <html><body><p> Nitric <a href="https://interviewquestions.tuteehub.com/tag/acid-847491" style="font-weight:bold;" target="_blank" title="Click to know more about ACID">ACID</a></p><br/><br/><p>The acid which is secreted by the <a href="https://interviewquestions.tuteehub.com/tag/glands-1007717" style="font-weight:bold;" target="_blank" title="Click to know more about GLANDS">GLANDS</a> in the <a href="https://interviewquestions.tuteehub.com/tag/stomach-14451" style="font-weight:bold;" target="_blank" title="Click to know more about STOMACH">STOMACH</a> <a href="https://interviewquestions.tuteehub.com/tag/wall-1448655" style="font-weight:bold;" target="_blank" title="Click to know more about WALL">WALL</a> is Nitric acid.</p></body></html> | |
| 259. |
Which of the following is the correct sequence of countries in terms of maximum carbon dioxide emission? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/china-1165" style="font-weight:bold;" target="_blank" title="Click to know more about CHINA">CHINA</a>, <a href="https://interviewquestions.tuteehub.com/tag/usa-272" style="font-weight:bold;" target="_blank" title="Click to know more about USA">USA</a>, European Union, <a href="https://interviewquestions.tuteehub.com/tag/india-54" style="font-weight:bold;" target="_blank" title="Click to know more about INDIA">INDIA</a><br/></p><br/><br/><p>The correct <a href="https://interviewquestions.tuteehub.com/tag/sequence-1201556" style="font-weight:bold;" target="_blank" title="Click to know more about SEQUENCE">SEQUENCE</a> is China, USA, European Union, India.</p></body></html> | |
| 260. |
________ gives hardness to stainless steel. |
| Answer» <html><body><p> Carbon</p><br/><br/><p>Iron is alloyed with carbon <a href="https://interviewquestions.tuteehub.com/tag/lo-1076492" style="font-weight:bold;" target="_blank" title="Click to know more about LO">LO</a> make steel and has the effect of increasing the hardness and strength of iron. Pure iron cannot be <a href="https://interviewquestions.tuteehub.com/tag/hardened-7686558" style="font-weight:bold;" target="_blank" title="Click to know more about HARDENED">HARDENED</a> or <a href="https://interviewquestions.tuteehub.com/tag/strengthened-7711563" style="font-weight:bold;" target="_blank" title="Click to know more about STRENGTHENED">STRENGTHENED</a> by heat treatment but the addition of carbon enables a wide range of hardness and strength. High-carbon stainless steel contains a <a href="https://interviewquestions.tuteehub.com/tag/minimum-561095" style="font-weight:bold;" target="_blank" title="Click to know more about MINIMUM">MINIMUM</a> of 0.3% carbon. The higher the carbon content, the <a href="https://interviewquestions.tuteehub.com/tag/less-1071906" style="font-weight:bold;" target="_blank" title="Click to know more about LESS">LESS</a> formable and the tougher the steel becomes.</p></body></html> | |
| 261. |
Which of the following appeared to be with a significant potential for accumulation through food chains ? |
| Answer» <html><body><p> DDT</p><br/><br/><p>DDT appeared to be with a significant <a href="https://interviewquestions.tuteehub.com/tag/potential-1161228" style="font-weight:bold;" target="_blank" title="Click to know more about POTENTIAL">POTENTIAL</a> for <a href="https://interviewquestions.tuteehub.com/tag/accumulation-847204" style="font-weight:bold;" target="_blank" title="Click to know more about ACCUMULATION">ACCUMULATION</a> through food <a href="https://interviewquestions.tuteehub.com/tag/chains-913673" style="font-weight:bold;" target="_blank" title="Click to know more about CHAINS">CHAINS</a>.</p></body></html> | |
| 262. |
Which of the following in automobile exhaust can cause cancer? |
| Answer» <html><body><p> Polyclinic hydrocarbons</p><br/><br/><p>Polycyclic aromatic hydrocarbons (PAHs) are formed during incomplete combustion. <a href="https://interviewquestions.tuteehub.com/tag/domestic-957937" style="font-weight:bold;" target="_blank" title="Click to know more about DOMESTIC">DOMESTIC</a> wood burning and road traffic are the major <a href="https://interviewquestions.tuteehub.com/tag/sources-1219409" style="font-weight:bold;" target="_blank" title="Click to know more about SOURCES">SOURCES</a> of PAHs. Exposure to PAH-containing substances <a href="https://interviewquestions.tuteehub.com/tag/increases-1040626" style="font-weight:bold;" target="_blank" title="Click to know more about INCREASES">INCREASES</a> the risk of <a href="https://interviewquestions.tuteehub.com/tag/cancer-19407" style="font-weight:bold;" target="_blank" title="Click to know more about CANCER">CANCER</a> in humans. The carcinogenicity of PAHs is associated with the complexity of the molecule, i.e., increasing number of benzenoid rings, and with metabolic activation to reactive diol epoxide intermediates and their subsequent covalent binding to critical targets in DNA. Quantitative cancer risk estimates of PAHs as air pollutants are very uncertain because of the lack of useful, good-quality data.</p></body></html> | |
| 263. |
Higher concentration of nitrogen dioxide in atmosphere air causes |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/bronchitis-402964" style="font-weight:bold;" target="_blank" title="Click to know more about BRONCHITIS">BRONCHITIS</a></p><br/><br/><p>Higher concentration of <a href="https://interviewquestions.tuteehub.com/tag/nitrogen-1118291" style="font-weight:bold;" target="_blank" title="Click to know more about NITROGEN">NITROGEN</a> <a href="https://interviewquestions.tuteehub.com/tag/dioxide-954355" style="font-weight:bold;" target="_blank" title="Click to know more about DIOXIDE">DIOXIDE</a> in atmosphere air <a href="https://interviewquestions.tuteehub.com/tag/causes-910982" style="font-weight:bold;" target="_blank" title="Click to know more about CAUSES">CAUSES</a> bronchitis.</p></body></html> | |
| 264. |
Which of the following is a man-made source of air pollution ? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/automobile-888607" style="font-weight:bold;" target="_blank" title="Click to know more about AUTOMOBILE">AUTOMOBILE</a> <a href="https://interviewquestions.tuteehub.com/tag/exhaust-979394" style="font-weight:bold;" target="_blank" title="Click to know more about EXHAUST">EXHAUST</a></p><br/><br/><p>Automobile exhaust is a man-made <a href="https://interviewquestions.tuteehub.com/tag/source-1219297" style="font-weight:bold;" target="_blank" title="Click to know more about SOURCE">SOURCE</a> of <a href="https://interviewquestions.tuteehub.com/tag/air-852233" style="font-weight:bold;" target="_blank" title="Click to know more about AIR">AIR</a> <a href="https://interviewquestions.tuteehub.com/tag/pollution-602336" style="font-weight:bold;" target="_blank" title="Click to know more about POLLUTION">POLLUTION</a>.</p></body></html> | |
| 265. |
A colloidal system in which a liquid is dispersed in a liquid is called |
| Answer» <html><body><p> Emulsion</p><br/><br/><p>An emulsion is a mixture of two or more liquids that are normally immiscible (nonmixable or unblendable). Emulsions are part of a more general <a href="https://interviewquestions.tuteehub.com/tag/class-18125" style="font-weight:bold;" target="_blank" title="Click to know more about CLASS">CLASS</a> of two-phase systems of matter called colloids. In an emulsion, <a href="https://interviewquestions.tuteehub.com/tag/one-585732" style="font-weight:bold;" target="_blank" title="Click to know more about ONE">ONE</a> liquid (the dispersed phase) is dispersed in the other (the continuous phase). Examples of emulsions <a href="https://interviewquestions.tuteehub.com/tag/include-11332" style="font-weight:bold;" target="_blank" title="Click to know more about INCLUDE">INCLUDE</a> vinaigrettes, milk, mayonnaise, and some <a href="https://interviewquestions.tuteehub.com/tag/cutting-942320" style="font-weight:bold;" target="_blank" title="Click to know more about CUTTING">CUTTING</a> fluids for metal working.</p></body></html> | |
| 266. |
Tar roads get damaged if there is |
| Answer» <html><body><p> Stagnation of water on road</p><br/><br/><p>Tar roads gets damaged <a href="https://interviewquestions.tuteehub.com/tag/easily-964537" style="font-weight:bold;" target="_blank" title="Click to know more about EASILY">EASILY</a> during <a href="https://interviewquestions.tuteehub.com/tag/rainy-616682" style="font-weight:bold;" target="_blank" title="Click to know more about RAINY">RAINY</a> <a href="https://interviewquestions.tuteehub.com/tag/season-1197101" style="font-weight:bold;" target="_blank" title="Click to know more about SEASON">SEASON</a>. This is because tar roads are prone to water <a href="https://interviewquestions.tuteehub.com/tag/damage-943544" style="font-weight:bold;" target="_blank" title="Click to know more about DAMAGE">DAMAGE</a> very quickly. In the tar road, bitumen plays an important road to create a bond between the aggregate. But, tar road does not give more <a href="https://interviewquestions.tuteehub.com/tag/strength-1229153" style="font-weight:bold;" target="_blank" title="Click to know more about STRENGTH">STRENGTH</a> than concrete road, because bitumen respond to heat and water.</p></body></html> | |
| 267. |
Ozone depletion in the atmosphere is mainly caused by |
| Answer» <html><body><p> Chlorofluorocarbon</p><br/><br/><p>Ozone <a href="https://interviewquestions.tuteehub.com/tag/depletion-437378" style="font-weight:bold;" target="_blank" title="Click to know more about DEPLETION">DEPLETION</a> <a href="https://interviewquestions.tuteehub.com/tag/occurs-1127848" style="font-weight:bold;" target="_blank" title="Click to know more about OCCURS">OCCURS</a> when <a href="https://interviewquestions.tuteehub.com/tag/chlorofluorocarbons-915909" style="font-weight:bold;" target="_blank" title="Click to know more about CHLOROFLUOROCARBONS">CHLOROFLUOROCARBONS</a> (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are <a href="https://interviewquestions.tuteehub.com/tag/released-613817" style="font-weight:bold;" target="_blank" title="Click to know more about RELEASED">RELEASED</a> into the atmosphere.</p></body></html> | |
| 268. |
Which of the following is not a natural source of hydrocarbon? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/mica-1276" style="font-weight:bold;" target="_blank" title="Click to know more about MICA">MICA</a></p><br/><br/><p>There are three main natural sources of hydrocarbons: natural gas, petroleum and coal. Mica is a natural occurring mineral that is <a href="https://interviewquestions.tuteehub.com/tag/based-389387" style="font-weight:bold;" target="_blank" title="Click to know more about BASED">BASED</a> on a <a href="https://interviewquestions.tuteehub.com/tag/collection-422059" style="font-weight:bold;" target="_blank" title="Click to know more about COLLECTION">COLLECTION</a> of silicate minerals and composed of varying amounts of <a href="https://interviewquestions.tuteehub.com/tag/potassium-603438" style="font-weight:bold;" target="_blank" title="Click to know more about POTASSIUM">POTASSIUM</a>, iron, aluminum, magnesium and <a href="https://interviewquestions.tuteehub.com/tag/water-1449333" style="font-weight:bold;" target="_blank" title="Click to know more about WATER">WATER</a>. It is widely used in the electrical industry.</p></body></html> | |
| 269. |
Which of the following is used in dating archaeological findings ? |
| Answer» <html><body><p> <sub>6</sub><sup>14</sup>C<br/></p><br/><br/><p>Radiocarbon <a href="https://interviewquestions.tuteehub.com/tag/dating-944700" style="font-weight:bold;" target="_blank" title="Click to know more about DATING">DATING</a> (usually referred to as simply <a href="https://interviewquestions.tuteehub.com/tag/carbon-16249" style="font-weight:bold;" target="_blank" title="Click to know more about CARBON">CARBON</a> dating) is a radiometric dating method that uses the naturally occurring radioisotope carbon-14 (14C) to <a href="https://interviewquestions.tuteehub.com/tag/estimate-25704" style="font-weight:bold;" target="_blank" title="Click to know more about ESTIMATE">ESTIMATE</a> the age of carbon-bearing <a href="https://interviewquestions.tuteehub.com/tag/materials-1089380" style="font-weight:bold;" target="_blank" title="Click to know more about MATERIALS">MATERIALS</a> up to about 58,000 to 62,000 years. Raw, i.e., uncalibrated, radiocarbon ages are usually reported in radiocarbon years “Before Present” (BP), with “present” defined as CE <a href="https://interviewquestions.tuteehub.com/tag/1950-281705" style="font-weight:bold;" target="_blank" title="Click to know more about 1950">1950</a>. Such raw ages can be calibrated to give calendar dates. One of the most frequent uses of radiocarbon dating is to estimate the age of organic remains from archaeological sites.</p></body></html> | |
| 270. |
The open "Sigrees" or coal stoves often require fanning to sustain burning because of |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/tendency-1241592" style="font-weight:bold;" target="_blank" title="Click to know more about TENDENCY">TENDENCY</a> of carbon <a href="https://interviewquestions.tuteehub.com/tag/dioxide-954355" style="font-weight:bold;" target="_blank" title="Click to know more about DIOXIDE">DIOXIDE</a> to form a layer along with dust smoke</p><br/><br/><p>Burning coal <a href="https://interviewquestions.tuteehub.com/tag/requires-7264857" style="font-weight:bold;" target="_blank" title="Click to know more about REQUIRES">REQUIRES</a> oxygen to chemically react. The availability of oxygen is limited in the furnace by several factors such as the <a href="https://interviewquestions.tuteehub.com/tag/friction-21545" style="font-weight:bold;" target="_blank" title="Click to know more about FRICTION">FRICTION</a> of the air against the coal. Blowing provides more oxygen to the flame and raises the temperature of the flame. Besides, it helps to prevent carbon dioxide from forming layer along with dust smoke so as to keep the supply of oxygen intact.</p></body></html> | |
| 271. |
The element which is used for vulcanizing rubber |
| Answer» <html><body><p> Sulphur</p><br/><br/><p>Vulcanization gives rubber its <a href="https://interviewquestions.tuteehub.com/tag/characteristic-914243" style="font-weight:bold;" target="_blank" title="Click to know more about CHARACTERISTIC">CHARACTERISTIC</a> <a href="https://interviewquestions.tuteehub.com/tag/elastic-967540" style="font-weight:bold;" target="_blank" title="Click to know more about ELASTIC">ELASTIC</a> <a href="https://interviewquestions.tuteehub.com/tag/quality-17732" style="font-weight:bold;" target="_blank" title="Click to know more about QUALITY">QUALITY</a>. This <a href="https://interviewquestions.tuteehub.com/tag/process-11618" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESS">PROCESS</a> is carried out by mixing the latex with sulphur (other vulcanizing agents such as selenium and tellurium are occasionally used but sulphur is the most common) and heating it in one of two ways.</p></body></html> | |
| 272. |
Nitrogen is an essential constituent of all : |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/proteins-607691" style="font-weight:bold;" target="_blank" title="Click to know more about PROTEINS">PROTEINS</a></p><br/><br/><p>Nitrogen is a major essential <a href="https://interviewquestions.tuteehub.com/tag/element-969236" style="font-weight:bold;" target="_blank" title="Click to know more about ELEMENT">ELEMENT</a> for all organisms, and a <a href="https://interviewquestions.tuteehub.com/tag/constituent-930772" style="font-weight:bold;" target="_blank" title="Click to know more about CONSTITUENT">CONSTITUENT</a> of proteins, <a href="https://interviewquestions.tuteehub.com/tag/nucleic-2200041" style="font-weight:bold;" target="_blank" title="Click to know more about NUCLEIC">NUCLEIC</a> acids and other <a href="https://interviewquestions.tuteehub.com/tag/indispensable-1041854" style="font-weight:bold;" target="_blank" title="Click to know more about INDISPENSABLE">INDISPENSABLE</a> organic compounds.</p></body></html> | |
| 273. |
A solution is |
| Answer» <html><body><p> A <a href="https://interviewquestions.tuteehub.com/tag/homogeneous-1028736" style="font-weight:bold;" target="_blank" title="Click to know more about HOMOGENEOUS">HOMOGENEOUS</a> <a href="https://interviewquestions.tuteehub.com/tag/mixture-1098735" style="font-weight:bold;" target="_blank" title="Click to know more about MIXTURE">MIXTURE</a> of <a href="https://interviewquestions.tuteehub.com/tag/two-714195" style="font-weight:bold;" target="_blank" title="Click to know more about TWO">TWO</a> or more <a href="https://interviewquestions.tuteehub.com/tag/substances-654612" style="font-weight:bold;" target="_blank" title="Click to know more about SUBSTANCES">SUBSTANCES</a><br/></p><br/><br/><p>In chemistry, a <a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> is a special type of homogeneous mixture composed of two or more substances.</p></body></html> | |
| 274. |
The function of sedimentation tank in sewage treatment is to: |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/remove-1184766" style="font-weight:bold;" target="_blank" title="Click to know more about REMOVE">REMOVE</a> <a href="https://interviewquestions.tuteehub.com/tag/suspended-656920" style="font-weight:bold;" target="_blank" title="Click to know more about SUSPENDED">SUSPENDED</a> <a href="https://interviewquestions.tuteehub.com/tag/solids-1216975" style="font-weight:bold;" target="_blank" title="Click to know more about SOLIDS">SOLIDS</a></p><br/><br/><p>A sedimentation tank allows suspended particles to settle out of water or wastewater as it flows slowly through the tank, thereby providing some degree of purification. A layer of accumulated solids, <a href="https://interviewquestions.tuteehub.com/tag/called-907796" style="font-weight:bold;" target="_blank" title="Click to know more about CALLED">CALLED</a> sludge, forms at the bottom of the tank and is periodically removed.</p></body></html> | |
| 275. |
How many electrons are there in a Hydrogen atom? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/one-585732" style="font-weight:bold;" target="_blank" title="Click to know more about ONE">ONE</a></p><br/><br/><p>There are <a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a> one <a href="https://interviewquestions.tuteehub.com/tag/electron-968715" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRON">ELECTRON</a> in a <a href="https://interviewquestions.tuteehub.com/tag/hydrogen-22331" style="font-weight:bold;" target="_blank" title="Click to know more about HYDROGEN">HYDROGEN</a> <a href="https://interviewquestions.tuteehub.com/tag/atom-887280" style="font-weight:bold;" target="_blank" title="Click to know more about ATOM">ATOM</a>.</p></body></html> | |
| 276. |
Who first published the periodic table? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/dmitri-2060300" style="font-weight:bold;" target="_blank" title="Click to know more about DMITRI">DMITRI</a> <a href="https://interviewquestions.tuteehub.com/tag/mendeleev-558665" style="font-weight:bold;" target="_blank" title="Click to know more about MENDELEEV">MENDELEEV</a></p><br/><br/><p>In 1869 <a href="https://interviewquestions.tuteehub.com/tag/russian-627904" style="font-weight:bold;" target="_blank" title="Click to know more about RUSSIAN">RUSSIAN</a> <a href="https://interviewquestions.tuteehub.com/tag/chemist-915071" style="font-weight:bold;" target="_blank" title="Click to know more about CHEMIST">CHEMIST</a> Dimitri Mendeleev started the development of the periodic table, arranging chemical <a href="https://interviewquestions.tuteehub.com/tag/elements-969381" style="font-weight:bold;" target="_blank" title="Click to know more about ELEMENTS">ELEMENTS</a> by atomic mass.</p></body></html> | |
| 277. |
Which among the following coal contains 90 per cent of carbon? |
| Answer» <html><body><p> Anthracite<br/></p><br/><br/><p>Anthracite <a href="https://interviewquestions.tuteehub.com/tag/coal-421360" style="font-weight:bold;" target="_blank" title="Click to know more about COAL">COAL</a> contains 90 <a href="https://interviewquestions.tuteehub.com/tag/per-590802" style="font-weight:bold;" target="_blank" title="Click to know more about PER">PER</a> cent of carbon.</p></body></html> | |
| 278. |
Brass contains |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/copper-933790" style="font-weight:bold;" target="_blank" title="Click to know more about COPPER">COPPER</a> and <a href="https://interviewquestions.tuteehub.com/tag/zinc-751325" style="font-weight:bold;" target="_blank" title="Click to know more about ZINC">ZINC</a><br/></p><br/><br/><p>Brass is an alloy <a href="https://interviewquestions.tuteehub.com/tag/made-3718337" style="font-weight:bold;" target="_blank" title="Click to know more about MADE">MADE</a> of copper and zinc; the proportions of zinc and copper can be <a href="https://interviewquestions.tuteehub.com/tag/varied-2321992" style="font-weight:bold;" target="_blank" title="Click to know more about VARIED">VARIED</a> to create a range of brasses with varying properties. By comparison, bronze is principally an alloy of copper and tin.</p></body></html> | |
| 279. |
Which of the following does the nucleus of an atom consists of? |
| Answer» <html><body><p> Protons and <a href="https://interviewquestions.tuteehub.com/tag/neutrons-1114464" style="font-weight:bold;" target="_blank" title="Click to know more about NEUTRONS">NEUTRONS</a></p><br/><br/><p>The <a href="https://interviewquestions.tuteehub.com/tag/nucleus-18220" style="font-weight:bold;" target="_blank" title="Click to know more about NUCLEUS">NUCLEUS</a> of an atom consists of neutrons and protons, which in <a href="https://interviewquestions.tuteehub.com/tag/turn-1429043" style="font-weight:bold;" target="_blank" title="Click to know more about TURN">TURN</a> are the manifestation of more elementary particles, <a href="https://interviewquestions.tuteehub.com/tag/called-907796" style="font-weight:bold;" target="_blank" title="Click to know more about CALLED">CALLED</a> quarks, that are held in association by the <a href="https://interviewquestions.tuteehub.com/tag/nuclear-2474" style="font-weight:bold;" target="_blank" title="Click to know more about NUCLEAR">NUCLEAR</a> strong force in certain stable combinations of hadrons, called baryons.</p></body></html> | |
| 280. |
Atoms having the same number of protons but different number of neutrons are called : |
| Answer» <html><body><p> Isotopes</p><br/><br/><p>Two atoms with the same <a href="https://interviewquestions.tuteehub.com/tag/atomic-2477" style="font-weight:bold;" target="_blank" title="Click to know more about ATOMIC">ATOMIC</a> <a href="https://interviewquestions.tuteehub.com/tag/number-582134" style="font-weight:bold;" target="_blank" title="Click to know more about NUMBER">NUMBER</a>, but different mass <a href="https://interviewquestions.tuteehub.com/tag/numbers-22758" style="font-weight:bold;" target="_blank" title="Click to know more about NUMBERS">NUMBERS</a> (same number of protons, different number of <a href="https://interviewquestions.tuteehub.com/tag/neutrons-1114464" style="font-weight:bold;" target="_blank" title="Click to know more about NEUTRONS">NEUTRONS</a>), are called isotopes, or isotopic nuclides.</p></body></html> | |
| 281. |
Chemical properties of isotopes |
| Answer» <html><body><p> Must be same</p><br/><br/><p>Different <a href="https://interviewquestions.tuteehub.com/tag/isotopes-1052577" style="font-weight:bold;" target="_blank" title="Click to know more about ISOTOPES">ISOTOPES</a> of an <a href="https://interviewquestions.tuteehub.com/tag/element-969236" style="font-weight:bold;" target="_blank" title="Click to know more about ELEMENT">ELEMENT</a> generally have the same <a href="https://interviewquestions.tuteehub.com/tag/physical-600035" style="font-weight:bold;" target="_blank" title="Click to know more about PHYSICAL">PHYSICAL</a> and chemical <a href="https://interviewquestions.tuteehub.com/tag/properties-11511" style="font-weight:bold;" target="_blank" title="Click to know more about PROPERTIES">PROPERTIES</a>. That's because they have the same numbers of <a href="https://interviewquestions.tuteehub.com/tag/protons-1171004" style="font-weight:bold;" target="_blank" title="Click to know more about PROTONS">PROTONS</a> and electrons.</p></body></html> | |
| 282. |
The nucleus of an atom consists of |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/protons-1171004" style="font-weight:bold;" target="_blank" title="Click to know more about PROTONS">PROTONS</a> and Neutrons</p><br/><br/><p>The nucleus is a collection of <a href="https://interviewquestions.tuteehub.com/tag/particles-1147533" style="font-weight:bold;" target="_blank" title="Click to know more about PARTICLES">PARTICLES</a> called protons, which are positively charged, and neutrons, which are electrically <a href="https://interviewquestions.tuteehub.com/tag/neutral-1114358" style="font-weight:bold;" target="_blank" title="Click to know more about NEUTRAL">NEUTRAL</a>. Protons and neutrons are in <a href="https://interviewquestions.tuteehub.com/tag/turn-1429043" style="font-weight:bold;" target="_blank" title="Click to know more about TURN">TURN</a> made up of particles called quarks.</p></body></html> | |
| 283. |
The mass number of a nucleus is |
| Answer» <html><body><p> Sometimes more and somtimes <a href="https://interviewquestions.tuteehub.com/tag/equal-446400" style="font-weight:bold;" target="_blank" title="Click to know more about EQUAL">EQUAL</a> to its atomic number</p><br/><br/><p>The mass number (A), is the total number of <a href="https://interviewquestions.tuteehub.com/tag/protons-1171004" style="font-weight:bold;" target="_blank" title="Click to know more about PROTONS">PROTONS</a> and <a href="https://interviewquestions.tuteehub.com/tag/neutrons-1114464" style="font-weight:bold;" target="_blank" title="Click to know more about NEUTRONS">NEUTRONS</a> in an atomic <a href="https://interviewquestions.tuteehub.com/tag/nucleus-18220" style="font-weight:bold;" target="_blank" title="Click to know more about NUCLEUS">NUCLEUS</a> so sometimes more than and sometimes equal to its atomic number, depends <a href="https://interviewquestions.tuteehub.com/tag/upon-2315586" style="font-weight:bold;" target="_blank" title="Click to know more about UPON">UPON</a> no of neutrons.</p></body></html> | |
| 284. |
Water cycle refers to |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/constant-930172" style="font-weight:bold;" target="_blank" title="Click to know more about CONSTANT">CONSTANT</a> movement of water from ocean to land and back to ocean once again</p><br/><br/><p>Water cycle, also called hydrologic cycle, cycle that involves the continuous circulation of water in the Earth-atmosphere system. Of the many processes <a href="https://interviewquestions.tuteehub.com/tag/involved-7257329" style="font-weight:bold;" target="_blank" title="Click to know more about INVOLVED">INVOLVED</a> in the water cycle, the most <a href="https://interviewquestions.tuteehub.com/tag/important-1038039" style="font-weight:bold;" target="_blank" title="Click to know more about IMPORTANT">IMPORTANT</a> are evaporation, transpiration, condensation, precipitation, and runoff. Although the total amount of water within the cycle remains essentially constant, its <a href="https://interviewquestions.tuteehub.com/tag/distribution-440862" style="font-weight:bold;" target="_blank" title="Click to know more about DISTRIBUTION">DISTRIBUTION</a> among the various processes is continually changing.</p></body></html> | |
| 285. |
Which gas emitted by power stations causes acid rain? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/sulphur-1234343" style="font-weight:bold;" target="_blank" title="Click to know more about SULPHUR">SULPHUR</a> dioxide</p><br/><br/><p>Power <a href="https://interviewquestions.tuteehub.com/tag/plants-601210" style="font-weight:bold;" target="_blank" title="Click to know more about PLANTS">PLANTS</a> <a href="https://interviewquestions.tuteehub.com/tag/release-1183763" style="font-weight:bold;" target="_blank" title="Click to know more about RELEASE">RELEASE</a> the majority of sulphur dioxide and much of the nitrogen oxides when they burn fossil fuels, such as coal, to produce electricity. In <a href="https://interviewquestions.tuteehub.com/tag/addition-367641" style="font-weight:bold;" target="_blank" title="Click to know more about ADDITION">ADDITION</a>, the exhaust from cars, trucks, and buses releases nitrogen oxides and sulfur dioxide into the <a href="https://interviewquestions.tuteehub.com/tag/air-852233" style="font-weight:bold;" target="_blank" title="Click to know more about AIR">AIR</a>. These pollutants cause acid rain.</p></body></html> | |
| 286. |
What are the components responsible for acid rain? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/sulphur-1234343" style="font-weight:bold;" target="_blank" title="Click to know more about SULPHUR">SULPHUR</a> <a href="https://interviewquestions.tuteehub.com/tag/dioxide-954355" style="font-weight:bold;" target="_blank" title="Click to know more about DIOXIDE">DIOXIDE</a> (SO<sub>2</sub>) and Nitrogen oxides (NO<sub>x</sub>)</p><br/><br/><p>Sulphur dioxide (SO<sub>2</sub>) and Nitrogen oxides (NO<sub>x</sub>) are responsible for <a href="https://interviewquestions.tuteehub.com/tag/acid-847491" style="font-weight:bold;" target="_blank" title="Click to know more about ACID">ACID</a> rain.</p></body></html> | |
| 287. |
Permanent hardness of water may be removed by addition of |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/sodium-1215510" style="font-weight:bold;" target="_blank" title="Click to know more about SODIUM">SODIUM</a> carbonate</p><br/><br/><p>Hardness can be <a href="https://interviewquestions.tuteehub.com/tag/removed-2986295" style="font-weight:bold;" target="_blank" title="Click to know more about REMOVED">REMOVED</a> by <a href="https://interviewquestions.tuteehub.com/tag/adding-2399902" style="font-weight:bold;" target="_blank" title="Click to know more about ADDING">ADDING</a> sodium carbonate (washing soda) or by <a href="https://interviewquestions.tuteehub.com/tag/passing-1148520" style="font-weight:bold;" target="_blank" title="Click to know more about PASSING">PASSING</a> the water through an ion-exchange <a href="https://interviewquestions.tuteehub.com/tag/column-922494" style="font-weight:bold;" target="_blank" title="Click to know more about COLUMN">COLUMN</a>.</p></body></html> | |
| 288. |
Acid rain is caused due to pollution of atmosphere by |
| Answer» <html><body><p> Oxides of nitrogen and sulphur</p><br/><br/><p>Acid rain is caused by a chemical reaction that begins when <a href="https://interviewquestions.tuteehub.com/tag/compounds-927010" style="font-weight:bold;" target="_blank" title="Click to know more about COMPOUNDS">COMPOUNDS</a> like sulphur <a href="https://interviewquestions.tuteehub.com/tag/dioxide-954355" style="font-weight:bold;" target="_blank" title="Click to know more about DIOXIDE">DIOXIDE</a> and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they <a href="https://interviewquestions.tuteehub.com/tag/mix-1098576" style="font-weight:bold;" target="_blank" title="Click to know more about MIX">MIX</a> and react with water, oxygen, and other <a href="https://interviewquestions.tuteehub.com/tag/chemicals-915059" style="font-weight:bold;" target="_blank" title="Click to know more about CHEMICALS">CHEMICALS</a> to form more acidic pollutants, <a href="https://interviewquestions.tuteehub.com/tag/known-534098" style="font-weight:bold;" target="_blank" title="Click to know more about KNOWN">KNOWN</a> as acid rain.</p></body></html> | |
| 289. |
Which of the following is a natural polymer? |
| Answer» <html><body><p> Starch</p><br/><br/><p>Cotton, starch, cellulose and rubber are some of the naturally occurring polymers.Starch is a condensation polymer <a href="https://interviewquestions.tuteehub.com/tag/made-3718337" style="font-weight:bold;" target="_blank" title="Click to know more about MADE">MADE</a> up of <a href="https://interviewquestions.tuteehub.com/tag/hundreds-1033666" style="font-weight:bold;" target="_blank" title="Click to know more about HUNDREDS">HUNDREDS</a> of glucose monomers, which split out <a href="https://interviewquestions.tuteehub.com/tag/water-1449333" style="font-weight:bold;" target="_blank" title="Click to know more about WATER">WATER</a> molecules as they <a href="https://interviewquestions.tuteehub.com/tag/chemically-915043" style="font-weight:bold;" target="_blank" title="Click to know more about CHEMICALLY">CHEMICALLY</a> combine. Starch is a member of the basic food group <a href="https://interviewquestions.tuteehub.com/tag/carbohydrates-16201" style="font-weight:bold;" target="_blank" title="Click to know more about CARBOHYDRATES">CARBOHYDRATES</a> and is found in cereal grains and potatoes. It is also referred to as a polysaccharide, because it is a polymer of the monosaccharide glucose.</p></body></html> | |
| 290. |
Silk fibre chemically is : |
| Answer» <html><body><p> Protein</p><br/><br/><p>Silk is a natural protein fibre, some forms of which can be woven into textiles. The protein fibre of silk is composed mainly of fibroin and produced by <a href="https://interviewquestions.tuteehub.com/tag/certain-407894" style="font-weight:bold;" target="_blank" title="Click to know more about CERTAIN">CERTAIN</a> insect <a href="https://interviewquestions.tuteehub.com/tag/larvae-539710" style="font-weight:bold;" target="_blank" title="Click to know more about LARVAE">LARVAE</a> to form cocoons. The best-known type of silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyxmori reared in captivity (sericulture). The shimmering appearance of silk is due to the triangular prism-like <a href="https://interviewquestions.tuteehub.com/tag/structure-1230280" style="font-weight:bold;" target="_blank" title="Click to know more about STRUCTURE">STRUCTURE</a> of the silk fibre, which allows silk cloth to refract incoming <a href="https://interviewquestions.tuteehub.com/tag/light-1073401" style="font-weight:bold;" target="_blank" title="Click to know more about LIGHT">LIGHT</a> at different angles, thus producing different colours.</p></body></html> | |
| 291. |
Plastic is a type of |
| Answer» <html><body><p> Polymer</p><br/><br/><p>Plastics are typically organic <a href="https://interviewquestions.tuteehub.com/tag/polymers-16104" style="font-weight:bold;" target="_blank" title="Click to know more about POLYMERS">POLYMERS</a> of high molecular mass and often contain other substances. They are usually synthetic, most commonly derived from petrochemicals, however, an <a href="https://interviewquestions.tuteehub.com/tag/array-13331" style="font-weight:bold;" target="_blank" title="Click to know more about ARRAY">ARRAY</a> of <a href="https://interviewquestions.tuteehub.com/tag/variants-1443249" style="font-weight:bold;" target="_blank" title="Click to know more about VARIANTS">VARIANTS</a> are made from renewable materials such as polylactic acid from <a href="https://interviewquestions.tuteehub.com/tag/corn-934213" style="font-weight:bold;" target="_blank" title="Click to know more about CORN">CORN</a> or cellulosics from cotton linters.</p></body></html> | |
| 292. |
Polythene is polymer of |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/ethylene-976061" style="font-weight:bold;" target="_blank" title="Click to know more about ETHYLENE">ETHYLENE</a></p><br/><br/><p>Polythene is <a href="https://interviewquestions.tuteehub.com/tag/vinyl-1446572" style="font-weight:bold;" target="_blank" title="Click to know more about VINYL">VINYL</a> <a href="https://interviewquestions.tuteehub.com/tag/polymer-1158585" style="font-weight:bold;" target="_blank" title="Click to know more about POLYMER">POLYMER</a>, <a href="https://interviewquestions.tuteehub.com/tag/made-3718337" style="font-weight:bold;" target="_blank" title="Click to know more about MADE">MADE</a> from the <a href="https://interviewquestions.tuteehub.com/tag/monomer-1101032" style="font-weight:bold;" target="_blank" title="Click to know more about MONOMER">MONOMER</a> ethylene.</p></body></html> | |
| 293. |
Glycol is used to manufacture which of the following ? |
| Answer» <html><body><p> Terylene<br/></p><br/><br/><p>Monoethylene <a href="https://interviewquestions.tuteehub.com/tag/glycol-1008602" style="font-weight:bold;" target="_blank" title="Click to know more about GLYCOL">GLYCOL</a> (MEG), also known as <a href="https://interviewquestions.tuteehub.com/tag/ethylene-976061" style="font-weight:bold;" target="_blank" title="Click to know more about ETHYLENE">ETHYLENE</a> glycol (<a href="https://interviewquestions.tuteehub.com/tag/eg-445433" style="font-weight:bold;" target="_blank" title="Click to know more about EG">EG</a>) or simply glycol, is a diol mostly used for the production of polyester fibers and <a href="https://interviewquestions.tuteehub.com/tag/polyethylene-602423" style="font-weight:bold;" target="_blank" title="Click to know more about POLYETHYLENE">POLYETHYLENE</a> terephthalate (PET) resins. Polyethylene terephthalate is used to produce textiles, large soft-drink containers, <a href="https://interviewquestions.tuteehub.com/tag/photographic-599898" style="font-weight:bold;" target="_blank" title="Click to know more about PHOTOGRAPHIC">PHOTOGRAPHIC</a> film, and overhead transparencies. It is marketed under various trademarks including DACRON, Terylene, Fortrel, and Mylar.</p></body></html> | |
| 294. |
The filter over which sewage is sprinkled is called as |
| Answer» <html><body><p> Trickling filter</p><br/><br/><p>A trickling filter, <a href="https://interviewquestions.tuteehub.com/tag/also-373387" style="font-weight:bold;" target="_blank" title="Click to know more about ALSO">ALSO</a> <a href="https://interviewquestions.tuteehub.com/tag/known-534098" style="font-weight:bold;" target="_blank" title="Click to know more about KNOWN">KNOWN</a> as percolating filter, is an artificial bed of stone or broken brick material over which waste <a href="https://interviewquestions.tuteehub.com/tag/water-1449333" style="font-weight:bold;" target="_blank" title="Click to know more about WATER">WATER</a> or sewage is <a href="https://interviewquestions.tuteehub.com/tag/allowed-857944" style="font-weight:bold;" target="_blank" title="Click to know more about ALLOWED">ALLOWED</a> to sprinkle or to trickle. It is then collected through the under <a href="https://interviewquestions.tuteehub.com/tag/drainage-959336" style="font-weight:bold;" target="_blank" title="Click to know more about DRAINAGE">DRAINAGE</a> system.</p></body></html> | |
| 295. |
Gas released during Bhopal tragedy was : |
| Answer» <html><body><p> Methyl <a href="https://interviewquestions.tuteehub.com/tag/isocyanate-1052359" style="font-weight:bold;" target="_blank" title="Click to know more about ISOCYANATE">ISOCYANATE</a></p><br/><br/><p>Over 500,000 people were <a href="https://interviewquestions.tuteehub.com/tag/exposed-7260805" style="font-weight:bold;" target="_blank" title="Click to know more about EXPOSED">EXPOSED</a> to methyl isocyanate (MIC) gas. The <a href="https://interviewquestions.tuteehub.com/tag/highly-2102664" style="font-weight:bold;" target="_blank" title="Click to know more about HIGHLY">HIGHLY</a> toxic substance made its way into and around the small towns <a href="https://interviewquestions.tuteehub.com/tag/located-543617" style="font-weight:bold;" target="_blank" title="Click to know more about LOCATED">LOCATED</a> near the plant. Estimates <a href="https://interviewquestions.tuteehub.com/tag/vary-1443941" style="font-weight:bold;" target="_blank" title="Click to know more about VARY">VARY</a> on the death toll. The official immediate death toll was 2,259.</p></body></html> | |
| 296. |
An example of major air pollutant is |
| Answer» <html><body><p> Carbon monoxide</p><br/><br/><p>Carbon Monoxide (CO) is one of the most harmful pollutants. Other gaseous air pollutants are carbon dioxide, oxides of sulfur, <a href="https://interviewquestions.tuteehub.com/tag/nitrogen-1118291" style="font-weight:bold;" target="_blank" title="Click to know more about NITROGEN">NITROGEN</a>, hydrocarbons, hydrogen sulphide, <a href="https://interviewquestions.tuteehub.com/tag/ozone-1144697" style="font-weight:bold;" target="_blank" title="Click to know more about OZONE">OZONE</a> and other oxidants. Particulate pollutants include <a href="https://interviewquestions.tuteehub.com/tag/mist-561798" style="font-weight:bold;" target="_blank" title="Click to know more about MIST">MIST</a>, dust, smog, <a href="https://interviewquestions.tuteehub.com/tag/fumes-1001776" style="font-weight:bold;" target="_blank" title="Click to know more about FUMES">FUMES</a> <a href="https://interviewquestions.tuteehub.com/tag/etc-975753" style="font-weight:bold;" target="_blank" title="Click to know more about ETC">ETC</a>.</p></body></html> | |
| 297. |
'Acid rain' is caused due to air pollution by |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/nitrous-2196967" style="font-weight:bold;" target="_blank" title="Click to know more about NITROUS">NITROUS</a> oxide and <a href="https://interviewquestions.tuteehub.com/tag/sulphur-1234343" style="font-weight:bold;" target="_blank" title="Click to know more about SULPHUR">SULPHUR</a> <a href="https://interviewquestions.tuteehub.com/tag/dioxide-954355" style="font-weight:bold;" target="_blank" title="Click to know more about DIOXIDE">DIOXIDE</a></p><br/><br/><p>'Acid <a href="https://interviewquestions.tuteehub.com/tag/rain-1176646" style="font-weight:bold;" target="_blank" title="Click to know more about RAIN">RAIN</a>' is caused <a href="https://interviewquestions.tuteehub.com/tag/due-433472" style="font-weight:bold;" target="_blank" title="Click to know more about DUE">DUE</a> to air pollution by Nitrous oxide and sulphur dioxide.</p></body></html> | |
| 298. |
Main source of lead pollution is from |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/leaded-7695203" style="font-weight:bold;" target="_blank" title="Click to know more about LEADED">LEADED</a> <a href="https://interviewquestions.tuteehub.com/tag/gasoline-471128" style="font-weight:bold;" target="_blank" title="Click to know more about GASOLINE">GASOLINE</a></p><br/><br/><p>Main <a href="https://interviewquestions.tuteehub.com/tag/source-1219297" style="font-weight:bold;" target="_blank" title="Click to know more about SOURCE">SOURCE</a> of <a href="https://interviewquestions.tuteehub.com/tag/lead-540361" style="font-weight:bold;" target="_blank" title="Click to know more about LEAD">LEAD</a> <a href="https://interviewquestions.tuteehub.com/tag/pollution-602336" style="font-weight:bold;" target="_blank" title="Click to know more about POLLUTION">POLLUTION</a> is from leaded gasoline.</p></body></html> | |
| 299. |
Which of the following is usually not an air-pollutant? |
| Answer» <html><body><p> Nitrous <a href="https://interviewquestions.tuteehub.com/tag/oxide-1144484" style="font-weight:bold;" target="_blank" title="Click to know more about OXIDE">OXIDE</a></p><br/><br/><p>The six air pollutants are carbon <a href="https://interviewquestions.tuteehub.com/tag/monoxide-2842046" style="font-weight:bold;" target="_blank" title="Click to know more about MONOXIDE">MONOXIDE</a>, lead, ground-level ozone, nitrogen dioxide, particulate <a href="https://interviewquestions.tuteehub.com/tag/matter-22749" style="font-weight:bold;" target="_blank" title="Click to know more about MATTER">MATTER</a>, and sulfur dioxide.The combustion of gasoline and other hydrocarbon fuels in automobiles, trucks, and jet airplanes produces several primary air pollutants. Nitrous oxide (N<sub>2</sub>O), commonly <a href="https://interviewquestions.tuteehub.com/tag/known-534098" style="font-weight:bold;" target="_blank" title="Click to know more about KNOWN">KNOWN</a> as laughing gas, is used in surgery and <a href="https://interviewquestions.tuteehub.com/tag/dentistry-1914" style="font-weight:bold;" target="_blank" title="Click to know more about DENTISTRY">DENTISTRY</a> for its anaesthetic and analgesic effects.</p></body></html> | |
| 300. |
Of the following which one pollutes the air of a big city ? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/lead-540361" style="font-weight:bold;" target="_blank" title="Click to know more about LEAD">LEAD</a></p></body></html> | |