InterviewSolution
Saved Bookmarks
InterviewSolution
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.
| 301. |
The constituents of automobile exhaust that can cause cancer is/are : |
| Answer» <html><body><p> Lead</p><br/><br/><p>Lead is a <a href="https://interviewquestions.tuteehub.com/tag/naturally-2859217" style="font-weight:bold;" target="_blank" title="Click to know more about NATURALLY">NATURALLY</a> occurring bluish-gray metal found in small amounts in the earth’s crust. In the past, when lead was added to gasoline, breathing automobile exhaust was the major source of lead exposure for most people. Lead in the exhaust also contaminated the soil near roads. Another major source of exposure is <a href="https://interviewquestions.tuteehub.com/tag/old-585313" style="font-weight:bold;" target="_blank" title="Click to know more about OLD">OLD</a> <a href="https://interviewquestions.tuteehub.com/tag/paint-1145670" style="font-weight:bold;" target="_blank" title="Click to know more about PAINT">PAINT</a> that contains lead. Lead has been found to be carcinogen. A substance that causes cancer or helps cancer grow is called a carcinogen. Several studies have looked for a link between exposure to lead in the <a href="https://interviewquestions.tuteehub.com/tag/workplace-1460109" style="font-weight:bold;" target="_blank" title="Click to know more about WORKPLACE">WORKPLACE</a> (mainly among battery workers and smelter workers) and lung cancer. Some of these studies have found a small increase in lung cancer risk. Studies have also looked at possible <a href="https://interviewquestions.tuteehub.com/tag/links-1075015" style="font-weight:bold;" target="_blank" title="Click to know more about LINKS">LINKS</a> between workplace exposures to lead and other cancers, including cancers of the brain, kidney, bladder, colon, and rectum.</p></body></html> | |
| 302. |
Of the following, which one pollutes the air of a big city ? |
| Answer» <html><body><p> Lead</p><br/><br/><p>Lead pollution primarily came from cars in the past. Today, lead pollution primarily comes from lead smelters, <a href="https://interviewquestions.tuteehub.com/tag/metal-1094457" style="font-weight:bold;" target="_blank" title="Click to know more about METAL">METAL</a> processing plants and incinerators. Deposits of lead in soil can harm both humans and animals by <a href="https://interviewquestions.tuteehub.com/tag/absorbing-846198" style="font-weight:bold;" target="_blank" title="Click to know more about ABSORBING">ABSORBING</a> it into a <a href="https://interviewquestions.tuteehub.com/tag/body-900196" style="font-weight:bold;" target="_blank" title="Click to know more about BODY">BODY</a>.</p></body></html> | |
| 303. |
The acid rain destroys vegetations because it contains |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/sulphuric-655420" style="font-weight:bold;" target="_blank" title="Click to know more about SULPHURIC">SULPHURIC</a> acid</p><br/><br/><p>Acid rain is a formed due to the mixing of oxides of several harmful gases with the rain. Acid rain formation <a href="https://interviewquestions.tuteehub.com/tag/result-1187343" style="font-weight:bold;" target="_blank" title="Click to know more about RESULT">RESULT</a> from both natural sources, such as <a href="https://interviewquestions.tuteehub.com/tag/volcanoes-728612" style="font-weight:bold;" target="_blank" title="Click to know more about VOLCANOES">VOLCANOES</a> and decaying vegetation, and man-made sources, primarily emissions of sulfur dioxide and nitrogen oxides resulting from fossil fuel combustion. These gases react in the atmosphere with water, <a href="https://interviewquestions.tuteehub.com/tag/oxygen-1144542" style="font-weight:bold;" target="_blank" title="Click to know more about OXYGEN">OXYGEN</a>, 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 various acidic compounds. When this rain falls on the soil, the soil becomes acidic. Also, the leaves get destroyed and germinating seeds get corroded. Plants experience stunted growth. Thus, vegetation is destroyed. So, the correct answer is option D.</p></body></html> | |
| 304. |
All isotopes of the same element have ______________ |
| Answer» <html><body><p> 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 <a href="https://interviewquestions.tuteehub.com/tag/different-951434" style="font-weight:bold;" target="_blank" title="Click to know more about DIFFERENT">DIFFERENT</a> atomic <a href="https://interviewquestions.tuteehub.com/tag/masses-1088822" style="font-weight:bold;" target="_blank" title="Click to know more about MASSES">MASSES</a></p></body></html> | |
| 305. |
All isotopes of the same element have ________ |
| Answer» <html><body><p> 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 atomic masses</p><br/><br/><p>All <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 the same <a href="https://interviewquestions.tuteehub.com/tag/element-969236" style="font-weight:bold;" target="_blank" title="Click to know more about ELEMENT">ELEMENT</a> have the same atomic number but different atomic masses.</p></body></html> | |
| 306. |
J.J. Thomson’s proposed model of atom is generally called ________ model. |
| Answer» <html><body><p> Plum and pudding</p><br/><br/><p>J.J. <a href="https://interviewquestions.tuteehub.com/tag/thomson-708787" style="font-weight:bold;" target="_blank" title="Click to know more about THOMSON">THOMSON</a>’s proposed <a href="https://interviewquestions.tuteehub.com/tag/model-942" style="font-weight:bold;" target="_blank" title="Click to know more about MODEL">MODEL</a> of <a href="https://interviewquestions.tuteehub.com/tag/atom-887280" style="font-weight:bold;" target="_blank" title="Click to know more about ATOM">ATOM</a> is generally called plum and pudding model.</p></body></html> | |
| 307. |
The fundamental particles present in the nucleus of an atom are |
| Answer» <html><body><p> Proton, neutron</p><br/><br/><p>The nucleus is the positively <a href="https://interviewquestions.tuteehub.com/tag/charged-7263949" style="font-weight:bold;" target="_blank" title="Click to know more about CHARGED">CHARGED</a> <a href="https://interviewquestions.tuteehub.com/tag/centre-912170" style="font-weight:bold;" target="_blank" title="Click to know more about CENTRE">CENTRE</a> of an <a href="https://interviewquestions.tuteehub.com/tag/atom-887280" style="font-weight:bold;" target="_blank" title="Click to know more about ATOM">ATOM</a> and <a href="https://interviewquestions.tuteehub.com/tag/contains-11473" style="font-weight:bold;" target="_blank" title="Click to know more about CONTAINS">CONTAINS</a> most of its mass. It is <a href="https://interviewquestions.tuteehub.com/tag/composed-7302537" style="font-weight:bold;" target="_blank" title="Click to know more about COMPOSED">COMPOSED</a> of protons, which have a positive charge, and neutrons, which have no charge.</p></body></html> | |
| 308. |
What particles move around the nucleus of an atom and are negatively charged? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/electrons-969138" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRONS">ELECTRONS</a></p><br/><br/><p>Electrons are negatively <a href="https://interviewquestions.tuteehub.com/tag/charged-7263949" style="font-weight:bold;" target="_blank" title="Click to know more about CHARGED">CHARGED</a> particles that generally <a href="https://interviewquestions.tuteehub.com/tag/orbit-1138163" style="font-weight:bold;" target="_blank" title="Click to know more about ORBIT">ORBIT</a> the nucleus of an atom. Electrons are much smaller than <a href="https://interviewquestions.tuteehub.com/tag/protons-1171004" style="font-weight:bold;" target="_blank" title="Click to know more about PROTONS">PROTONS</a> or neutrons.</p></body></html> | |
| 309. |
The metals commonly used for electroplating are |
| Answer» <html><body><p> Chromium, Copper and <a href="https://interviewquestions.tuteehub.com/tag/nickel-1117895" style="font-weight:bold;" target="_blank" title="Click to know more about NICKEL">NICKEL</a></p><br/><br/><p>The metals <a href="https://interviewquestions.tuteehub.com/tag/commonly-2530443" style="font-weight:bold;" target="_blank" title="Click to know more about COMMONLY">COMMONLY</a> used for <a href="https://interviewquestions.tuteehub.com/tag/electroplating-969181" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTROPLATING">ELECTROPLATING</a> are Chromium, Copper and Nickel.</p></body></html> | |
| 310. |
The source of energy that causes the least global warming is |
| Answer» <html><body><p> Geothermal energy<br/></p><br/><br/><p>Fossil fuels — coal, petroleum, and natural gas — are the primary culprit behind climate change. They <a href="https://interviewquestions.tuteehub.com/tag/contribute-409828" style="font-weight:bold;" target="_blank" title="Click to know more about CONTRIBUTE">CONTRIBUTE</a> more than 80 percent of greenhouse gas emissions — and 98 percent of CO<sub>2</sub> emissions <a href="https://interviewquestions.tuteehub.com/tag/alone-2412120" style="font-weight:bold;" target="_blank" title="Click to know more about ALONE">ALONE</a>. On the contrary, Geothermal energy is thermal energy generated and <a href="https://interviewquestions.tuteehub.com/tag/stored-7260220" style="font-weight:bold;" target="_blank" title="Click to know more about STORED">STORED</a> in the Earth. It is clean and sustainable.</p></body></html> | |
| 311. |
Supersonic jet causes pollution by thinning of |
| Answer» <html><body><p> O<sub>3</sub> layer</p><br/><br/><p>Most commercial <a href="https://interviewquestions.tuteehub.com/tag/flights-462843" style="font-weight:bold;" target="_blank" title="Click to know more about FLIGHTS">FLIGHTS</a> are confined to the troposphere, but high-level supersonic <a href="https://interviewquestions.tuteehub.com/tag/aircraft-3321" style="font-weight:bold;" target="_blank" title="Click to know more about AIRCRAFT">AIRCRAFT</a> inject pollutants into the stratosphere, which leads to the thinning of the ozone layer. Of these nitrogen oxides are <a href="https://interviewquestions.tuteehub.com/tag/especially-975202" style="font-weight:bold;" target="_blank" title="Click to know more about ESPECIALLY">ESPECIALLY</a> harmful.</p></body></html> | |
| 312. |
The gas causing acid rain in an industrial area is |
| Answer» <html><body><p> Sulphur dioxide<br/></p><br/><br/><p>Acid rain <a href="https://interviewquestions.tuteehub.com/tag/results-2643" style="font-weight:bold;" target="_blank" title="Click to know more about RESULTS">RESULTS</a> when sulphur dioxide (<a href="https://interviewquestions.tuteehub.com/tag/so2-631788" style="font-weight:bold;" target="_blank" title="Click to know more about SO2">SO2</a>) and nitrogen oxides (<a href="https://interviewquestions.tuteehub.com/tag/nox-571519" style="font-weight:bold;" target="_blank" title="Click to know more about NOX">NOX</a>) are emitted into the atmosphere and transported by <a href="https://interviewquestions.tuteehub.com/tag/wind-1457295" style="font-weight:bold;" target="_blank" title="Click to know more about WIND">WIND</a> and <a href="https://interviewquestions.tuteehub.com/tag/air-852233" style="font-weight:bold;" target="_blank" title="Click to know more about AIR">AIR</a> currents.</p></body></html> | |
| 313. |
The pollutant responsible for ozone holes is ________ |
| Answer» <html><body><p> CFC</p><br/><br/><p>Ozone depletion <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 <a href="https://interviewquestions.tuteehub.com/tag/formerly-7285498" style="font-weight:bold;" target="_blank" title="Click to know more about FORMERLY">FORMERLY</a> found in aerosol spray cans and refrigerants—are released into the <a href="https://interviewquestions.tuteehub.com/tag/atmosphere-13116" style="font-weight:bold;" target="_blank" title="Click to know more about ATMOSPHERE">ATMOSPHERE</a>.</p></body></html> | |
| 314. |
Major gaseous pollutant of the thermal power station is |
| Answer» <html><body><p> SO<sub>2</sub></p><br/><br/><p>A flue-gas stack is a type of chimney, a vertical pipe, channel or similar structure through which combustion product gases called flue gases are exhausted to the outside air. Flue gases are produced when coal, oil, natural gas, wood or any other fuel is combusted in an industrial furnace, a power <a href="https://interviewquestions.tuteehub.com/tag/plant-1155789" style="font-weight:bold;" target="_blank" title="Click to know more about PLANT">PLANT</a>’s steam-generating boiler, or other large combustion device. Flue gas is usually composed of carbon dioxide (CO2) and water <a href="https://interviewquestions.tuteehub.com/tag/vapor-1442821" style="font-weight:bold;" target="_blank" title="Click to know more about VAPOR">VAPOR</a> as <a href="https://interviewquestions.tuteehub.com/tag/well-734398" style="font-weight:bold;" target="_blank" title="Click to know more about WELL">WELL</a> as nitrogen and excess oxygen remaining from the intake combustion air. It also contains a small percentage of pollutants such as particulate matter, carbon monoxide, nitrogen oxides and sulfur oxides. The flue gas stacks are often quite tall, up to 400 metres (1300 feet) or more, so as to disperse the <a href="https://interviewquestions.tuteehub.com/tag/exhaust-979394" style="font-weight:bold;" target="_blank" title="Click to know more about EXHAUST">EXHAUST</a> pollutants over a greater area and thereby reduce the concentration of the pollutants to the <a href="https://interviewquestions.tuteehub.com/tag/levels-1072811" style="font-weight:bold;" target="_blank" title="Click to know more about LEVELS">LEVELS</a> required by governmental environmental policy and environmental regulation.</p></body></html> | |
| 315. |
Oxide of sulphur present in the atmosphere are washed down by rains to cause : |
| Answer» <html><body><p> Depletion of fossil fuel reserves</p><br/><br/><p>The oxide of Sulphur (Sulphur Dioxide) is washed down on earth as acid rain. It makes the soil acidic by lowering its pH; this affects <a href="https://interviewquestions.tuteehub.com/tag/plants-601210" style="font-weight:bold;" target="_blank" title="Click to know more about PLANTS">PLANTS</a> and animals adversely. Acid rain <a href="https://interviewquestions.tuteehub.com/tag/contains-11473" style="font-weight:bold;" target="_blank" title="Click to know more about CONTAINS">CONTAINS</a> H<sup>+</sup>, SO<sub>4</sub><sup>2-</sup> ions which when added to the soil leaches the nutrients from the soil. Acid rain <a href="https://interviewquestions.tuteehub.com/tag/renders-2247958" style="font-weight:bold;" target="_blank" title="Click to know more about RENDERS">RENDERS</a> the river or even ocean water acidic, thereby affecting marine animals adversely. Changes in pH of <a href="https://interviewquestions.tuteehub.com/tag/fresh-1000193" style="font-weight:bold;" target="_blank" title="Click to know more about FRESH">FRESH</a> water affect the reproduction and survival or many species or fish.</p></body></html> | |
| 316. |
Which of the following is the maximum number of electrons that can be present in M-shell? |
| Answer» <html><body><p> 18</p><br/><br/><p>The M shell only holds eight electrons. The M shell can actually hold up to 18 electrons as you <a href="https://interviewquestions.tuteehub.com/tag/move-548879" style="font-weight:bold;" target="_blank" title="Click to know more about MOVE">MOVE</a> to higher atomic numbers. The <a href="https://interviewquestions.tuteehub.com/tag/maximum-556915" style="font-weight:bold;" target="_blank" title="Click to know more about MAXIMUM">MAXIMUM</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> of electrons you will <a href="https://interviewquestions.tuteehub.com/tag/find-11616" style="font-weight:bold;" target="_blank" title="Click to know more about FIND">FIND</a> in any shell is 32.</p></body></html> | |
| 317. |
The depletion in Ozone layer is caused by ________ . |
| Answer» <html><body><p> Chlorofluorocarbons<br/></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> occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in <a href="https://interviewquestions.tuteehub.com/tag/aerosol-851125" style="font-weight:bold;" target="_blank" title="Click to know more about AEROSOL">AEROSOL</a> spray <a href="https://interviewquestions.tuteehub.com/tag/cans-908374" style="font-weight:bold;" target="_blank" title="Click to know more about CANS">CANS</a> and refrigerants—are released into the atmosphere.</p></body></html> | |
| 318. |
The smog is essentially caused by the presence of |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/oxides-1144499" style="font-weight:bold;" target="_blank" title="Click to know more about OXIDES">OXIDES</a> of <a href="https://interviewquestions.tuteehub.com/tag/n-568463" style="font-weight:bold;" target="_blank" title="Click to know more about N">N</a> and S</p><br/><br/><p>Photochemical smog is <a href="https://interviewquestions.tuteehub.com/tag/caused-7279664" style="font-weight:bold;" target="_blank" title="Click to know more about CAUSED">CAUSED</a> by oxides of <a href="https://interviewquestions.tuteehub.com/tag/sulphur-1234343" style="font-weight:bold;" target="_blank" title="Click to know more about SULPHUR">SULPHUR</a> and nitrogen.</p></body></html> | |
| 319. |
Which of the following pollutants is main product of automobile exhaust ? |
| Answer» <html><body><p> NO</p><br/><br/><p>Nitric <a href="https://interviewquestions.tuteehub.com/tag/oxide-1144484" style="font-weight:bold;" target="_blank" title="Click to know more about OXIDE">OXIDE</a> (NO) pollutant is the main <a href="https://interviewquestions.tuteehub.com/tag/product-25523" style="font-weight:bold;" target="_blank" title="Click to know more about PRODUCT">PRODUCT</a> of automobiles <a href="https://interviewquestions.tuteehub.com/tag/exhaust-979394" style="font-weight:bold;" target="_blank" title="Click to know more about EXHAUST">EXHAUST</a>. <a href="https://interviewquestions.tuteehub.com/tag/nitrogen-1118291" style="font-weight:bold;" target="_blank" title="Click to know more about NITROGEN">NITROGEN</a> dioxide (NO<sub>2</sub>) pollutant is <a href="https://interviewquestions.tuteehub.com/tag/also-373387" style="font-weight:bold;" target="_blank" title="Click to know more about ALSO">ALSO</a> the product of automobiles exhaust.</p></body></html> | |
| 320. |
Atoms of different elements have |
| Answer» <html><body><p> Different atomic <a href="https://interviewquestions.tuteehub.com/tag/number-582134" style="font-weight:bold;" target="_blank" title="Click to know more about NUMBER">NUMBER</a> and different number of valence <a href="https://interviewquestions.tuteehub.com/tag/electrons-969138" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRONS">ELECTRONS</a></p><br/><br/><p>The atoms of different elements have different <a href="https://interviewquestions.tuteehub.com/tag/numbers-22758" style="font-weight:bold;" target="_blank" title="Click to know more about NUMBERS">NUMBERS</a> of electrons, protons, and neutrons. Every element is <a href="https://interviewquestions.tuteehub.com/tag/unique-720618" style="font-weight:bold;" target="_blank" title="Click to know more about UNIQUE">UNIQUE</a> and has an atomic number. That number tells you the number of protons in every atom of the element. The atomic number is <a href="https://interviewquestions.tuteehub.com/tag/also-373387" style="font-weight:bold;" target="_blank" title="Click to know more about ALSO">ALSO</a> called the proton number.</p></body></html> | |
| 321. |
Which acid is used in Lead storage battery? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/sulphuric-655420" style="font-weight:bold;" target="_blank" title="Click to know more about SULPHURIC">SULPHURIC</a> <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>Lead <a href="https://interviewquestions.tuteehub.com/tag/storage-11586" style="font-weight:bold;" target="_blank" title="Click to know more about STORAGE">STORAGE</a> <a href="https://interviewquestions.tuteehub.com/tag/battery-893842" style="font-weight:bold;" target="_blank" title="Click to know more about BATTERY">BATTERY</a> <a href="https://interviewquestions.tuteehub.com/tag/uses-722152" style="font-weight:bold;" target="_blank" title="Click to know more about USES">USES</a> sulphuric acid.</p></body></html> | |
| 322. |
Which of the following can be found as pollutants in the drinking water in some parts of India? Select the correct answer using the code given below.(A) Arsenic(B) Sorbitol(C) Fluoride(D) Formaldehyde(E) Uranium |
| Answer» <html><body><p> A, C and E</p><br/><br/><p>Recent research has shown that India’s groundwater faces the problem of presence of <a href="https://interviewquestions.tuteehub.com/tag/uranium-1440633" style="font-weight:bold;" target="_blank" title="Click to know more about URANIUM">URANIUM</a>, arsenic, and heavy metals in ground water <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 drinking. <a href="https://interviewquestions.tuteehub.com/tag/sorbitol-648620" style="font-weight:bold;" target="_blank" title="Click to know more about SORBITOL">SORBITOL</a> (used as artificial <a href="https://interviewquestions.tuteehub.com/tag/sweetener-1236448" style="font-weight:bold;" target="_blank" title="Click to know more about SWEETENER">SWEETENER</a>) and Formaldehyde (used in coating, etc) are not <a href="https://interviewquestions.tuteehub.com/tag/famous-456388" style="font-weight:bold;" target="_blank" title="Click to know more about FAMOUS">FAMOUS</a> as water pollutants.</p></body></html> | |
| 323. |
The apparatus used to test acidity of aqueous solution is |
| Answer» <html><body><p> PH meter<br/></p><br/><br/><p>A pH meter is an electronic device <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/measuring-1091969" style="font-weight:bold;" target="_blank" title="Click to know more about MEASURING">MEASURING</a> the pH (acidity or alkalinity) of a liquid. A typical pH meter consists of a special measuring <a href="https://interviewquestions.tuteehub.com/tag/probe-606474" style="font-weight:bold;" target="_blank" title="Click to know more about PROBE">PROBE</a> (a glass electrode) connected to an electronic meter that measures and displays the pH <a href="https://interviewquestions.tuteehub.com/tag/reading-19542" style="font-weight:bold;" target="_blank" title="Click to know more about READING">READING</a>.</p></body></html> | |
| 324. |
The common name for the compound having formal NaOH is |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/caustic-7374706" style="font-weight:bold;" target="_blank" title="Click to know more about CAUSTIC">CAUSTIC</a> <a href="https://interviewquestions.tuteehub.com/tag/soda-1215481" style="font-weight:bold;" target="_blank" title="Click to know more about SODA">SODA</a></p><br/><br/><p>Sodium hydroxide is <a href="https://interviewquestions.tuteehub.com/tag/also-373387" style="font-weight:bold;" target="_blank" title="Click to know more about ALSO">ALSO</a> known as lye or soda , or caustic soda. At room temperature, sodium hydroxide is a <a href="https://interviewquestions.tuteehub.com/tag/white-742716" style="font-weight:bold;" target="_blank" title="Click to know more about WHITE">WHITE</a> crystalline odorless solid that absorbs moisture from the air.</p></body></html> | |
| 325. |
Chemical name of bleaching powder is : |
| Answer» <html><body><p> Calcium <a href="https://interviewquestions.tuteehub.com/tag/hypochlorite-2118861" style="font-weight:bold;" target="_blank" title="Click to know more about HYPOCHLORITE">HYPOCHLORITE</a></p><br/><br/><p>Calcium hypochlorite is an inorganic <a href="https://interviewquestions.tuteehub.com/tag/compound-926863" style="font-weight:bold;" target="_blank" title="Click to know more about COMPOUND">COMPOUND</a> with formula CaO(Cl)<sub>2</sub>. It is the main active ingredient of <a href="https://interviewquestions.tuteehub.com/tag/commercial-923169" style="font-weight:bold;" target="_blank" title="Click to know more about COMMERCIAL">COMMERCIAL</a> products called bleaching powder, chlorine powder, or chlorinated lime, <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 water <a href="https://interviewquestions.tuteehub.com/tag/treatment-712503" style="font-weight:bold;" target="_blank" title="Click to know more about TREATMENT">TREATMENT</a> and as a bleaching agent.</p></body></html> | |
| 326. |
White lung cancer is caused by |
| Answer» <html><body><p> Textiles</p><br/><br/><p>Asbestosis, also called <a href="https://interviewquestions.tuteehub.com/tag/white-742716" style="font-weight:bold;" target="_blank" title="Click to know more about WHITE">WHITE</a> <a href="https://interviewquestions.tuteehub.com/tag/lung-1081693" style="font-weight:bold;" target="_blank" title="Click to know more about LUNG">LUNG</a>, lung disease that is <a href="https://interviewquestions.tuteehub.com/tag/caused-7279664" style="font-weight:bold;" target="_blank" title="Click to know more about CAUSED">CAUSED</a> by the prolonged <a href="https://interviewquestions.tuteehub.com/tag/inhalation-1044227" style="font-weight:bold;" target="_blank" title="Click to know more about INHALATION">INHALATION</a> of asbestos fibres.</p></body></html> | |
| 327. |
Which of the following is not a gaseous air pollutant? |
| Answer» <html><body><p> Hydrocarbon</p><br/><br/><p>The <a href="https://interviewquestions.tuteehub.com/tag/gaseous-467815" style="font-weight:bold;" target="_blank" title="Click to know more about GASEOUS">GASEOUS</a> air pollutants of <a href="https://interviewquestions.tuteehub.com/tag/primary-1165403" style="font-weight:bold;" target="_blank" title="Click to know more about PRIMARY">PRIMARY</a> concern in urban settings include sulfur <a href="https://interviewquestions.tuteehub.com/tag/dioxide-954355" style="font-weight:bold;" target="_blank" title="Click to know more about DIOXIDE">DIOXIDE</a>, nitrogen dioxide, and carbon monoxide; these are emitted directly into the air from the combustion of fossil fuels.Smoke, 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 airborne solid and liquid particulates and gases emitted when a material undergoes combustion, is also a pollutant. Hydrocarbon is an organic compound consisting <a href="https://interviewquestions.tuteehub.com/tag/entirely-2614676" style="font-weight:bold;" target="_blank" title="Click to know more about ENTIRELY">ENTIRELY</a> of hydrogen and carbon.</p></body></html> | |
| 328. |
Which of the following fuels causes minimum environmental pollution? |
| Answer» <html><body><p> Hydrogen</p><br/><br/><p>When hydrogen burns it <a href="https://interviewquestions.tuteehub.com/tag/becomes-1994370" style="font-weight:bold;" target="_blank" title="Click to know more about BECOMES">BECOMES</a> water <a href="https://interviewquestions.tuteehub.com/tag/vapor-1442821" style="font-weight:bold;" target="_blank" title="Click to know more about VAPOR">VAPOR</a>. There are no carbon or other <a href="https://interviewquestions.tuteehub.com/tag/compounds-927010" style="font-weight:bold;" target="_blank" title="Click to know more about COMPOUNDS">COMPOUNDS</a> released into the atmosphere. There are various compounds including carbon dioxide and 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> released when other fuels are burnt.</p></body></html> | |
| 329. |
Most poisonous pollutant in water is |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/arsenic-382124" style="font-weight:bold;" target="_blank" title="Click to know more about ARSENIC">ARSENIC</a></p><br/><br/><p>Most <a href="https://interviewquestions.tuteehub.com/tag/poisonous-1157397" style="font-weight:bold;" target="_blank" title="Click to know more about POISONOUS">POISONOUS</a> <a href="https://interviewquestions.tuteehub.com/tag/pollutant-1158344" style="font-weight:bold;" target="_blank" title="Click to know more about POLLUTANT">POLLUTANT</a> in <a href="https://interviewquestions.tuteehub.com/tag/water-1449333" style="font-weight:bold;" target="_blank" title="Click to know more about WATER">WATER</a> is arsenic.</p></body></html> | |
| 330. |
What is the atomic number of Oxygen? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/8-336412" style="font-weight:bold;" target="_blank" title="Click to know more about 8">8</a></p><br/><br/><p>The <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> of <a href="https://interviewquestions.tuteehub.com/tag/oxygen-1144542" style="font-weight:bold;" target="_blank" title="Click to know more about OXYGEN">OXYGEN</a> is 8.</p></body></html> | |
| 331. |
How many electrons can be accommodated in d-orbital? |
| Answer» <html><body><p> 10</p><br/><br/><p>10 <a href="https://interviewquestions.tuteehub.com/tag/electrons-969138" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRONS">ELECTRONS</a> can be <a href="https://interviewquestions.tuteehub.com/tag/accommodated-7662389" style="font-weight:bold;" target="_blank" title="Click to know more about ACCOMMODATED">ACCOMMODATED</a> in d-orbital.</p></body></html> | |
| 332. |
Silicon is used in |
| Answer» <html><body><p> All of these</p><br/><br/><p>Silicon is used in Solar <a href="https://interviewquestions.tuteehub.com/tag/energy-15288" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGY">ENERGY</a> devices, <a href="https://interviewquestions.tuteehub.com/tag/semiconductors-639679" style="font-weight:bold;" target="_blank" title="Click to know more about SEMICONDUCTORS">SEMICONDUCTORS</a> and <a href="https://interviewquestions.tuteehub.com/tag/transistors-13296" style="font-weight:bold;" target="_blank" title="Click to know more about TRANSISTORS">TRANSISTORS</a>.</p></body></html> | |
| 333. |
Main pollutant present in automobile exhaust is |
| Answer» <html><body><p> CO</p><br/><br/><p>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> is the main pollutant present in <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></body></html> | |
| 334. |
The pH of lemon juice is expected to be |
| Answer» <html><body><p> Less than 7</p><br/><br/><p>The <a href="https://interviewquestions.tuteehub.com/tag/ph-1145128" style="font-weight:bold;" target="_blank" title="Click to know more about PH">PH</a> <a href="https://interviewquestions.tuteehub.com/tag/level-1072714" style="font-weight:bold;" target="_blank" title="Click to know more about LEVEL">LEVEL</a> of lemon juice is, 2.00 to 2.60. It <a href="https://interviewquestions.tuteehub.com/tag/varies-1443299" style="font-weight:bold;" target="_blank" title="Click to know more about VARIES">VARIES</a> depending on the lemon. pH expresses <a href="https://interviewquestions.tuteehub.com/tag/different-951434" style="font-weight:bold;" target="_blank" title="Click to know more about DIFFERENT">DIFFERENT</a> levels of acidity or alkalinity within 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>.</p></body></html> | |
| 335. |
The liquid waste from kitchens and baths, of residences is known as : |
| Answer» <html><body><p> Sullage</p><br/><br/><p>Sullage is all <a href="https://interviewquestions.tuteehub.com/tag/wastewater-1449272" style="font-weight:bold;" target="_blank" title="Click to know more about WASTEWATER">WASTEWATER</a> generated in households or office buildings from streams without fecal <a href="https://interviewquestions.tuteehub.com/tag/contamination-931634" style="font-weight:bold;" target="_blank" title="Click to know more about CONTAMINATION">CONTAMINATION</a>, i.e. all streams except for the wastewater from toilets. Sources of sullage <a href="https://interviewquestions.tuteehub.com/tag/include-11332" style="font-weight:bold;" target="_blank" title="Click to know more about INCLUDE">INCLUDE</a>, e.g. sinks, showers, baths, clothes washing machines or dish washers.</p></body></html> | |
| 336. |
An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a : |
| Answer» <html><body><p> Battery</p><br/><br/><p>A Galvanic cell, also <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 battery, is an electrochemical cell that derives electrical energy from <a href="https://interviewquestions.tuteehub.com/tag/spontaneous-632196" style="font-weight:bold;" target="_blank" title="Click to know more about SPONTANEOUS">SPONTANEOUS</a> redox reactions taking place within the cell. It is <a href="https://interviewquestions.tuteehub.com/tag/typically-715673" style="font-weight:bold;" target="_blank" title="Click to know more about TYPICALLY">TYPICALLY</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> as a <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 electrical power. By their nature, they produce direct current. A battery is a set of galvanic cells that are connected in parallel.</p></body></html> | |
| 337. |
A mixture of water and alcohol can be separated by |
| Answer» <html><body><p> Distillation</p><br/><br/><p>Alcohol can be separated from 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 alcohol and water by <a href="https://interviewquestions.tuteehub.com/tag/fractional-998803" style="font-weight:bold;" target="_blank" title="Click to know more about FRACTIONAL">FRACTIONAL</a> distillation. This method works because the liquids in the mixture have <a href="https://interviewquestions.tuteehub.com/tag/different-951434" style="font-weight:bold;" target="_blank" title="Click to know more about DIFFERENT">DIFFERENT</a> boiling points. When the mixture is heated, one liquid <a href="https://interviewquestions.tuteehub.com/tag/evaporates-7679271" style="font-weight:bold;" target="_blank" title="Click to know more about EVAPORATES">EVAPORATES</a> before the other.</p></body></html> | |
| 338. |
Which of the following is a natural dye ? |
| Answer» <html><body><p> Alizarin</p><br/><br/><p>Alizarin or 1,2-dihydroxyanthraquinone (also known as Mordant Red 11 and Turkey Red is an organic compound with formula C<sub>14</sub> H<sub>8</sub> O<sub>4</sub> that has been used throughout <a href="https://interviewquestions.tuteehub.com/tag/history-873" style="font-weight:bold;" target="_blank" title="Click to know more about HISTORY">HISTORY</a> as a prominent red <a href="https://interviewquestions.tuteehub.com/tag/dye-961060" style="font-weight:bold;" target="_blank" title="Click to know more about DYE">DYE</a>, principally for dyeing textile fabrics. Historically it was derived from the roots of plants of the madder genus. In 1869, it became the first natural pigment to be duplicated synthetically.Alizarin is the main ingredient for the <a href="https://interviewquestions.tuteehub.com/tag/manufacture-1086315" style="font-weight:bold;" target="_blank" title="Click to know more about MANUFACTURE">MANUFACTURE</a> of the madder lake pigments known to painters as Rose madder and Alizarin crimson. Alizarin in the most common usage of the term has a deep red colour, but the term is also part of the name for several <a href="https://interviewquestions.tuteehub.com/tag/relatedbrbr-2983848" style="font-weight:bold;" target="_blank" title="Click to know more about RELATED">RELATED</a> non-red dyes, such as Alizarine Cyanine Green and Alizarine Brilliant <a href="https://interviewquestions.tuteehub.com/tag/blue-899773" style="font-weight:bold;" target="_blank" title="Click to know more about BLUE">BLUE</a>.</p></body></html> | |
| 339. |
Philosopher’s wool is chemically |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/zinc-751325" style="font-weight:bold;" target="_blank" title="Click to know more about ZINC">ZINC</a> oxide<br/></p><br/><br/><p>The compound zinc oxide (<a href="https://interviewquestions.tuteehub.com/tag/zno-751438" style="font-weight:bold;" target="_blank" title="Click to know more about ZNO">ZNO</a>) is called <a href="https://interviewquestions.tuteehub.com/tag/philosopher-599664" style="font-weight:bold;" target="_blank" title="Click to know more about PHILOSOPHER">PHILOSOPHER</a>'s wool. Alchemists, as part of their <a href="https://interviewquestions.tuteehub.com/tag/rituals-1189916" style="font-weight:bold;" target="_blank" title="Click to know more about RITUALS">RITUALS</a>, would burn zinc in air and collect the residue, which <a href="https://interviewquestions.tuteehub.com/tag/formed-464209" style="font-weight:bold;" target="_blank" title="Click to know more about FORMED">FORMED</a> into white woolly tufts. They called it lana philosophica in Latin, meaning philosopher's wool.</p></body></html> | |
| 340. |
Who is known as the 'father of modern chemistry'? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/antoine-1980970" style="font-weight:bold;" target="_blank" title="Click to know more about ANTOINE">ANTOINE</a> <a href="https://interviewquestions.tuteehub.com/tag/lavoisier-540166" style="font-weight:bold;" target="_blank" title="Click to know more about LAVOISIER">LAVOISIER</a></p><br/><br/><p>Antoine Lavoisier is <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 the 'father of <a href="https://interviewquestions.tuteehub.com/tag/modern-1099449" style="font-weight:bold;" target="_blank" title="Click to know more about MODERN">MODERN</a> <a href="https://interviewquestions.tuteehub.com/tag/chemistry-506" style="font-weight:bold;" target="_blank" title="Click to know more about CHEMISTRY">CHEMISTRY</a>'.</p></body></html> | |
| 341. |
Smog is |
| Answer» <html><body><p> A combination of smoke and <a href="https://interviewquestions.tuteehub.com/tag/fog-463266" style="font-weight:bold;" target="_blank" title="Click to know more about FOG">FOG</a></p><br/><br/><p>Smog is air pollution that reduces visibility. The term "smog" was first used in the <a href="https://interviewquestions.tuteehub.com/tag/early-447577" style="font-weight:bold;" target="_blank" title="Click to know more about EARLY">EARLY</a> 1900s to describe a mix of smoke and fog. The smoke usually came from burning coal. Smog was common in industrial <a href="https://interviewquestions.tuteehub.com/tag/areas-883934" style="font-weight:bold;" target="_blank" title="Click to know more about AREAS">AREAS</a>, and remains a familiar sight in <a href="https://interviewquestions.tuteehub.com/tag/cities-917075" style="font-weight:bold;" target="_blank" title="Click to know more about CITIES">CITIES</a> today. Today, most of the smog we <a href="https://interviewquestions.tuteehub.com/tag/see-630247" style="font-weight:bold;" target="_blank" title="Click to know more about SEE">SEE</a> is photochemical smog.</p></body></html> | |
| 342. |
The ore of Aluminium is |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/bauxite-394696" style="font-weight:bold;" target="_blank" title="Click to know more about BAUXITE">BAUXITE</a></p><br/><br/><p>Of all the <a href="https://interviewquestions.tuteehub.com/tag/aluminium-858823" style="font-weight:bold;" target="_blank" title="Click to know more about ALUMINIUM">ALUMINIUM</a> <a href="https://interviewquestions.tuteehub.com/tag/ores-1138664" style="font-weight:bold;" target="_blank" title="Click to know more about ORES">ORES</a>, bauxite is the <a href="https://interviewquestions.tuteehub.com/tag/chief-417885" style="font-weight:bold;" target="_blank" title="Click to know more about CHIEF">CHIEF</a> <a href="https://interviewquestions.tuteehub.com/tag/ore-1138646" style="font-weight:bold;" target="_blank" title="Click to know more about ORE">ORE</a> of aluminium.</p></body></html> | |
| 343. |
The chemical formula of the laughing gas is |
| Answer» <html><body><p> N<sub>2</sub>O</p><br/><br/><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>(N<sub>2</sub>o) is a colourless, sweet-tasting <a href="https://interviewquestions.tuteehub.com/tag/gas-1003521" style="font-weight:bold;" target="_blank" title="Click to know more about GAS">GAS</a>. It is <a href="https://interviewquestions.tuteehub.com/tag/also-373387" style="font-weight:bold;" target="_blank" title="Click to know more about ALSO">ALSO</a> known as "laughing gas".</p></body></html> | |