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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.
| 1. |
The number of electrons presents in H is |
| Answer» H+ is a hydrogen ion, and it is an ion because it LOST an electron. Electrons are negatively charged. When an atom gains electrons it will have NEGATIVE charges. So it has zero electron. | |
| 2. |
What are the number of moles of CO2 which contains 16 g of oxygen? |
| Answer» One mole of CO2 has mass of 44 g and 32 g of O2. So 16 g of O2 have 22 g of CO2 or 0.5 moles of it. | |
| 3. |
Which of the following is not an addition polymer? |
| Answer» <html><body><p> Nylon</p><br/><br/><p>Nylon is not an <a href="https://interviewquestions.tuteehub.com/tag/addition-367641" style="font-weight:bold;" target="_blank" title="Click to know more about ADDITION">ADDITION</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>.</p></body></html> | |
| 4. |
London smog is found in |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/winter-1457624" style="font-weight:bold;" target="_blank" title="Click to know more about WINTER">WINTER</a> during <a href="https://interviewquestions.tuteehub.com/tag/morning-1103190" style="font-weight:bold;" target="_blank" title="Click to know more about MORNING">MORNING</a> <a href="https://interviewquestions.tuteehub.com/tag/time-19467" style="font-weight:bold;" target="_blank" title="Click to know more about TIME">TIME</a></p><br/><br/><p>London <a href="https://interviewquestions.tuteehub.com/tag/smog-646363" style="font-weight:bold;" target="_blank" title="Click to know more about SMOG">SMOG</a> is <a href="https://interviewquestions.tuteehub.com/tag/found-458144" style="font-weight:bold;" target="_blank" title="Click to know more about FOUND">FOUND</a> in winter during morning time.</p></body></html> | |
| 5. |
Oxygen has (+) oxidation number only in |
| Answer» <html><body><p> OF<sub><a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a></sub></p><br/><br/><p>In case of OF<sub>2</sub>, <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 not the most electronegative <a href="https://interviewquestions.tuteehub.com/tag/element-969236" style="font-weight:bold;" target="_blank" title="Click to know more about ELEMENT">ELEMENT</a>. The fluorine is more electronegative and has an oxidation state of -<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>. In this case, the oxygen has an oxidation state of +2.</p></body></html> | |
| 6. |
The heat energy produced when the human body metabolises 1 gram of fat is |
| Answer» <html><body><p> 39 <a href="https://interviewquestions.tuteehub.com/tag/kj-1063034" style="font-weight:bold;" target="_blank" title="Click to know more about KJ">KJ</a></p><br/><br/><p>The <a href="https://interviewquestions.tuteehub.com/tag/heat-21102" style="font-weight:bold;" target="_blank" title="Click to know more about HEAT">HEAT</a> energy produced when the <a href="https://interviewquestions.tuteehub.com/tag/human-1032714" style="font-weight:bold;" target="_blank" title="Click to know more about HUMAN">HUMAN</a> body metabolises 1 gram of <a href="https://interviewquestions.tuteehub.com/tag/fat-459796" style="font-weight:bold;" target="_blank" title="Click to know more about FAT">FAT</a> is 39 KJ.</p></body></html> | |
| 7. |
Combustion of a candle is a/an |
| Answer» <html><body><p> Exothermic <a href="https://interviewquestions.tuteehub.com/tag/reaction-22747" style="font-weight:bold;" target="_blank" title="Click to know more about REACTION">REACTION</a></p><br/><br/><p>In <a href="https://interviewquestions.tuteehub.com/tag/theory-706806" style="font-weight:bold;" target="_blank" title="Click to know more about THEORY">THEORY</a>, a candle is made of a solid <a href="https://interviewquestions.tuteehub.com/tag/hydrocarbon-1034072" style="font-weight:bold;" target="_blank" title="Click to know more about HYDROCARBON">HYDROCARBON</a> called paraffin. When the solid burns, the hydrocarbon reacts with oxygen to form 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> and water. The reaction is exothermic, meaning it releases <a href="https://interviewquestions.tuteehub.com/tag/heat-21102" style="font-weight:bold;" target="_blank" title="Click to know more about HEAT">HEAT</a> to the atmosphere along with the other products.</p></body></html> | |
| 8. |
Carbon dioxide is |
| Answer» <html><body><p> A <a href="https://interviewquestions.tuteehub.com/tag/reducing-2981618" style="font-weight:bold;" target="_blank" title="Click to know more about REDUCING">REDUCING</a> <a href="https://interviewquestions.tuteehub.com/tag/agent-369049" style="font-weight:bold;" target="_blank" title="Click to know more about AGENT">AGENT</a><br/></p><br/><br/><p>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> is a reducing agent.</p></body></html> | |
| 9. |
Who developed Hydrogen Bomb? |
| Answer» <html><body><p> Edward Teller</p><br/><br/><p>Edward Teller, Stanislaw M. Ulam, and other American <a href="https://interviewquestions.tuteehub.com/tag/scientists-638066" style="font-weight:bold;" target="_blank" title="Click to know more about SCIENTISTS">SCIENTISTS</a> developed the first hydrogen bomb, which was <a href="https://interviewquestions.tuteehub.com/tag/tested-665596" style="font-weight:bold;" target="_blank" title="Click to know more about TESTED">TESTED</a> at Enewetak <a href="https://interviewquestions.tuteehub.com/tag/atoll-385058" style="font-weight:bold;" target="_blank" title="Click to know more about ATOLL">ATOLL</a> on November 1, 1952.</p></body></html> | |
| 10. |
The gas dissolved in water that makes it basic is : |
| Answer» <html><body><p> Ammonia</p><br/><br/><p>Ammonia gas that dissolves 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> forms 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> of ammonium hydroxide (NH<sub>4</sub>OH). This solution (including the gas) is a <a href="https://interviewquestions.tuteehub.com/tag/strong-653928" style="font-weight:bold;" target="_blank" title="Click to know more about STRONG">STRONG</a> base and will make the solution <a href="https://interviewquestions.tuteehub.com/tag/alkaline-371462" style="font-weight:bold;" target="_blank" title="Click to know more about ALKALINE">ALKALINE</a>.</p></body></html> | |
| 11. |
Which of the following causes the rusting of iron?a. Oxidationb. Reductionc. Chemical reaction with oxygend. Chemical reaction with CO2 |
| Answer» <html><body><p> A and C</p><br/><br/><p>Oxidation and chemical reaction with <a href="https://interviewquestions.tuteehub.com/tag/oxygen-1144542" style="font-weight:bold;" target="_blank" title="Click to know more about OXYGEN">OXYGEN</a> <a href="https://interviewquestions.tuteehub.com/tag/causes-910982" style="font-weight:bold;" target="_blank" title="Click to know more about CAUSES">CAUSES</a> rusting of <a href="https://interviewquestions.tuteehub.com/tag/iron-1051344" style="font-weight:bold;" target="_blank" title="Click to know more about IRON">IRON</a>.</p></body></html> | |
| 12. |
Which of the following gases will effuse out of football bladder most quickly ? |
| Answer» <html><body><p> H<sub>2</sub></p><br/><br/><p>Hydrogen <a href="https://interviewquestions.tuteehub.com/tag/gas-1003521" style="font-weight:bold;" target="_blank" title="Click to know more about GAS">GAS</a>(H<sub>2</sub>) will <a href="https://interviewquestions.tuteehub.com/tag/effuse-2604134" style="font-weight:bold;" target="_blank" title="Click to know more about EFFUSE">EFFUSE</a> out of <a href="https://interviewquestions.tuteehub.com/tag/football-463519" style="font-weight:bold;" target="_blank" title="Click to know more about FOOTBALL">FOOTBALL</a> bladder most quickly.</p></body></html> | |
| 13. |
What is 'milk of magnesia' chemically? |
| Answer» <html><body><p> Magnesium hydroxide</p><br/><br/><p>Magnesium hydroxide is the inorganic compound with the chemical formula Mg(OH)₂. It occurs in nature as the mineral brucite. It is a white solid with low <a href="https://interviewquestions.tuteehub.com/tag/solubility-1217018" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUBILITY">SOLUBILITY</a> in water. Magnesium hydroxide is a common <a href="https://interviewquestions.tuteehub.com/tag/component-926634" style="font-weight:bold;" target="_blank" title="Click to know more about COMPONENT">COMPONENT</a> of <a href="https://interviewquestions.tuteehub.com/tag/antacids-379409" style="font-weight:bold;" target="_blank" title="Click to know more about ANTACIDS">ANTACIDS</a>, such as milk of magnesia, 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 laxatives.</p></body></html> | |
| 14. |
The most pure form of Carbon among the options is |
| Answer» <html><body><p> Anthracite</p><br/><br/><p>There are <a href="https://interviewquestions.tuteehub.com/tag/three-708969" style="font-weight:bold;" target="_blank" title="Click to know more about THREE">THREE</a> forms of pure carbon: graphite, coal and <a href="https://interviewquestions.tuteehub.com/tag/diamond-950944" style="font-weight:bold;" target="_blank" title="Click to know more about DIAMOND">DIAMOND</a>. <a href="https://interviewquestions.tuteehub.com/tag/among-374776" style="font-weight:bold;" target="_blank" title="Click to know more about AMONG">AMONG</a> coal, Anthracite has the <a href="https://interviewquestions.tuteehub.com/tag/highest-1022683" style="font-weight:bold;" target="_blank" title="Click to know more about HIGHEST">HIGHEST</a> carbon content, the fewest impurities, and the highest <a href="https://interviewquestions.tuteehub.com/tag/calorific-7671480" style="font-weight:bold;" target="_blank" title="Click to know more about CALORIFIC">CALORIFIC</a> content of all types of coal except for graphite. Anthracite is the most metamorphosed type of coal in which the carbon content is between 92.1% and 98%.</p></body></html> | |
| 15. |
In which of the following ions , the colour is not due to d-d transition ? |
| Answer» <html><body><p> [CrO<sub>4</sub>]<sup>2</sup></p><br/><br/><p>The colour of transition-metal compounds is normally associated with d-d <a href="https://interviewquestions.tuteehub.com/tag/transitions-1426107" style="font-weight:bold;" target="_blank" title="Click to know more about TRANSITIONS">TRANSITIONS</a>. However, some transition metal compounds <a href="https://interviewquestions.tuteehub.com/tag/show-642916" style="font-weight:bold;" target="_blank" title="Click to know more about SHOW">SHOW</a> intense colour in solution in spite of absence of d-electrons. For <a href="https://interviewquestions.tuteehub.com/tag/example-978283" style="font-weight:bold;" target="_blank" title="Click to know more about EXAMPLE">EXAMPLE</a>, the orange colour of TiBr<sub>4</sub>, yellow colour of CrO<sub>4</sub><sup>2-</sup>, orange colour of Cr<sub>2</sub>O<sub>2</sub><sup>7-</sup>, intense red colour of [Fe(SCN)<sub>4</sub>] and deep purple of MnO<sub>4</sub> are not due to d—d transitions. In the case of MnO<sub>4</sub> <a href="https://interviewquestions.tuteehub.com/tag/ion-1051153" style="font-weight:bold;" target="_blank" title="Click to know more about ION">ION</a>, the <a href="https://interviewquestions.tuteehub.com/tag/color-922196" style="font-weight:bold;" target="_blank" title="Click to know more about COLOR">COLOR</a> is due to charge transfer and not due to d-d transitions.</p></body></html> | |
| 16. |
The most commonly used chemicals in the artificial rainmaking or cloud seeding are |
| Answer» <html><body><p> Silver Iodide (AgI)</p><br/><br/><p>The technology sprays particles of <a href="https://interviewquestions.tuteehub.com/tag/salts-1193872" style="font-weight:bold;" target="_blank" title="Click to know more about SALTS">SALTS</a> like silver iodide and chloride on <a href="https://interviewquestions.tuteehub.com/tag/clouds-919894" style="font-weight:bold;" target="_blank" title="Click to know more about CLOUDS">CLOUDS</a> using a special <a href="https://interviewquestions.tuteehub.com/tag/aircraft-3321" style="font-weight:bold;" target="_blank" title="Click to know more about AIRCRAFT">AIRCRAFT</a>, rockets or from dispersion devices located on the ground. The most common chemicals used for cloud seeding <a href="https://interviewquestions.tuteehub.com/tag/include-11332" style="font-weight:bold;" target="_blank" title="Click to know more about INCLUDE">INCLUDE</a> silver iodide, potassium iodide and dry ice (solid <a href="https://interviewquestions.tuteehub.com/tag/carbon-16249" style="font-weight:bold;" target="_blank" title="Click to know more about CARBON">CARBON</a> dioxide) and Liquid propane.</p></body></html> | |
| 17. |
Which one of the following is used as an anti-freeze for the automobile engines ? |
| Answer» <html><body><p> Ethylene glycol</p><br/><br/><p>Ethylene glycol is a chemical commonly used in many commercial and <a href="https://interviewquestions.tuteehub.com/tag/industrial-515446" style="font-weight:bold;" target="_blank" title="Click to know more about INDUSTRIAL">INDUSTRIAL</a> applications including antifreeze and <a href="https://interviewquestions.tuteehub.com/tag/coolant-933526" style="font-weight:bold;" target="_blank" title="Click to know more about COOLANT">COOLANT</a>. Ethylene glycol helps keep your car's engine from freezing in the <a href="https://interviewquestions.tuteehub.com/tag/winter-1457624" style="font-weight:bold;" target="_blank" title="Click to know more about WINTER">WINTER</a> and acts as a coolant to reduce overheating in the <a href="https://interviewquestions.tuteehub.com/tag/summer-1234468" style="font-weight:bold;" target="_blank" title="Click to know more about SUMMER">SUMMER</a>.</p></body></html> | |
| 18. |
The most important ore of lead is |
| Answer» <html><body><p> Galena</p><br/><br/><p>Lead ore is most commonly <a href="https://interviewquestions.tuteehub.com/tag/found-458144" style="font-weight:bold;" target="_blank" title="Click to know more about FOUND">FOUND</a> as lead sulphide (PbS), galena, a heavy, shiny grey metallic ore with a conspicuous cubic cleavage, but <a href="https://interviewquestions.tuteehub.com/tag/locally-7284078" style="font-weight:bold;" target="_blank" title="Click to know more about LOCALLY">LOCALLY</a> pyromorphite, lead chlorophosphate (Pb<sub>5</sub>(PO<sub>4</sub>)<a href="https://interviewquestions.tuteehub.com/tag/3cl-1862861" style="font-weight:bold;" target="_blank" title="Click to know more about 3CL">3CL</a>), was worked on Green Hill, <a href="https://interviewquestions.tuteehub.com/tag/near-1112277" style="font-weight:bold;" target="_blank" title="Click to know more about NEAR">NEAR</a> Charterhouse and on Blagdon Hill.</p></body></html> | |
| 19. |
Milk tastes sour when kept in the open for sometime due to the formation of |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/lactic-2153374" style="font-weight:bold;" target="_blank" title="Click to know more about LACTIC">LACTIC</a> acid</p><br/><br/><p>Like <a href="https://interviewquestions.tuteehub.com/tag/many-554478" style="font-weight:bold;" target="_blank" title="Click to know more about MANY">MANY</a> other things, milk <a href="https://interviewquestions.tuteehub.com/tag/contains-11473" style="font-weight:bold;" target="_blank" title="Click to know more about CONTAINS">CONTAINS</a> bacteria, Milk also naturally contains a kind of sugar known as “lactose.” The bacteria that live in milk get energy from this special sugar and <a href="https://interviewquestions.tuteehub.com/tag/use-1441041" style="font-weight:bold;" target="_blank" title="Click to know more about USE">USE</a> it to reproduce to make even more bacteria. When the bacteria use the lactose <a href="https://interviewquestions.tuteehub.com/tag/sugars-1233820" style="font-weight:bold;" target="_blank" title="Click to know more about SUGARS">SUGARS</a> to reproduce, they change it from “lactose sugar” into “lactic acid,” which tastes sour.</p></body></html> | |
| 20. |
Which one is a naturally occuring noble gas? |
| Answer» <html><body><p> Argon</p><br/><br/><p>Argon 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> <a href="https://interviewquestions.tuteehub.com/tag/occuring-2883033" style="font-weight:bold;" target="_blank" title="Click to know more about OCCURING">OCCURING</a> <a href="https://interviewquestions.tuteehub.com/tag/noble-2197707" style="font-weight:bold;" target="_blank" title="Click to know more about NOBLE">NOBLE</a> <a href="https://interviewquestions.tuteehub.com/tag/gas-1003521" style="font-weight:bold;" target="_blank" title="Click to know more about GAS">GAS</a>.</p></body></html> | |
| 21. |
When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is |
| Answer» <html><body><p> Carbon dioxide</p><br/><br/><p>When <a href="https://interviewquestions.tuteehub.com/tag/baking-891674" style="font-weight:bold;" target="_blank" title="Click to know more about BAKING">BAKING</a> soda and lemon juice are added together, the <a href="https://interviewquestions.tuteehub.com/tag/reaction-22747" style="font-weight:bold;" target="_blank" title="Click to know more about REACTION">REACTION</a> of the two is an <a href="https://interviewquestions.tuteehub.com/tag/acid-847491" style="font-weight:bold;" target="_blank" title="Click to know more about ACID">ACID</a>-based reaction because it involves an acid (citric acid in the lemon juice) reacting with a <a href="https://interviewquestions.tuteehub.com/tag/base-892693" style="font-weight:bold;" target="_blank" title="Click to know more about BASE">BASE</a> (sodium bicarbonate, more <a href="https://interviewquestions.tuteehub.com/tag/commonly-2530443" style="font-weight:bold;" target="_blank" title="Click to know more about COMMONLY">COMMONLY</a> known as baking soda). Carbon dioxide, a gas, is produced by the reaction.</p></body></html> | |
| 22. |
Which of the following is used as non-stick coating for cooking utensils? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/teflon-664514" style="font-weight:bold;" target="_blank" title="Click to know more about TEFLON">TEFLON</a></p><br/><br/><p>The <a href="https://interviewquestions.tuteehub.com/tag/modern-1099449" style="font-weight:bold;" target="_blank" title="Click to know more about MODERN">MODERN</a> non-stick pans were made <a href="https://interviewquestions.tuteehub.com/tag/using-7379753" style="font-weight:bold;" target="_blank" title="Click to know more about USING">USING</a> a coating of Teflon (polytetrafluoroethylene or PTFE).</p></body></html> | |
| 23. |
Which one of the following was used as a chemical weapon in the first world war ? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/mustard-1106767" style="font-weight:bold;" target="_blank" title="Click to know more about MUSTARD">MUSTARD</a> gas</p><br/><br/><p>Although the <a href="https://interviewquestions.tuteehub.com/tag/germans-472687" style="font-weight:bold;" target="_blank" title="Click to know more about GERMANS">GERMANS</a> were the first to use phosgene on the battlefield, it became the primary <a href="https://interviewquestions.tuteehub.com/tag/chemical-914796" style="font-weight:bold;" target="_blank" title="Click to know more about CHEMICAL">CHEMICAL</a> weapon of the Allies. Phosgene was <a href="https://interviewquestions.tuteehub.com/tag/responsible-613932" style="font-weight:bold;" target="_blank" title="Click to know more about RESPONSIBLE">RESPONSIBLE</a> for 85% of chemical-weapons fatalities during <a href="https://interviewquestions.tuteehub.com/tag/world-1460172" style="font-weight:bold;" target="_blank" title="Click to know more about WORLD">WORLD</a> War I. Mustard gas, a potent blistering agent, was dubbed King of the Battle Gases.</p></body></html> | |
| 24. |
Water can be separated from alcohol water mixture by |
| Answer» <html><body><p> Distillation</p><br/><br/><p>To separate a mixture of alcohol (<a href="https://interviewquestions.tuteehub.com/tag/ethanol-975823" style="font-weight:bold;" target="_blank" title="Click to know more about ETHANOL">ETHANOL</a>) and water, you can use a <a href="https://interviewquestions.tuteehub.com/tag/process-11618" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESS">PROCESS</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 fractional distillation. This technique relies on the fact that the compounds 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. Since ethanol <a href="https://interviewquestions.tuteehub.com/tag/boils-2478531" style="font-weight:bold;" target="_blank" title="Click to know more about BOILS">BOILS</a> at a lower temperature (78.5 degrees Celsius) than water, the alcohol vaporizes while most of the water remains a liquid.</p></body></html> | |
| 25. |
Zinc sulphide is commonly used as |
| Answer» <html><body><p> Rodenticide<br/></p><br/><br/><p>Rodenticides are a category of pest control chemicals intended to kill rodents. Metal phosphides have been used as a means of killing rodents and are considered single-dose fast acting rodenticides (death occurs commonly within 1-3 <a href="https://interviewquestions.tuteehub.com/tag/days-944904" style="font-weight:bold;" target="_blank" title="Click to know more about DAYS">DAYS</a> after single bait ingestion). A bait consisting of food and a phosphide (usually zinc phosphide) is left where the rodents can eat it. The acid in the digestive system of the rodent reacts with the phosphide to generate the toxic phosphine gas. This method of vermin control has possible <a href="https://interviewquestions.tuteehub.com/tag/use-1441041" style="font-weight:bold;" target="_blank" title="Click to know more about USE">USE</a> in places where rodents are resistant to some of the anticoagulants, particularly for control of house and <a href="https://interviewquestions.tuteehub.com/tag/field-987291" style="font-weight:bold;" target="_blank" title="Click to know more about FIELD">FIELD</a> mice; zinc phosphide baits are also cheaper than most second-generation anticoagulants, so that <a href="https://interviewquestions.tuteehub.com/tag/sometimes-648384" style="font-weight:bold;" target="_blank" title="Click to know more about SOMETIMES">SOMETIMES</a>, in the case of large infestation by rodents, their population is initially reduced by copious <a href="https://interviewquestions.tuteehub.com/tag/amounts-374805" style="font-weight:bold;" target="_blank" title="Click to know more about AMOUNTS">AMOUNTS</a> of zinc phosphide bait applied, and the rest of population that survived the initial fast-acting poison is then eradicated by prolonged feeding on anticoagulant bait.</p></body></html> | |
| 26. |
Sea water can be purified by the process of |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/distillation-15402" style="font-weight:bold;" target="_blank" title="Click to know more about DISTILLATION">DISTILLATION</a></p><br/><br/><p>Desalination – is a <a href="https://interviewquestions.tuteehub.com/tag/process-11618" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESS">PROCESS</a> by which <a href="https://interviewquestions.tuteehub.com/tag/saline-1193739" style="font-weight:bold;" target="_blank" title="Click to know more about SALINE">SALINE</a> water (generally sea water) is converted to fresh water. The most common desalination <a href="https://interviewquestions.tuteehub.com/tag/processes-21463" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESSES">PROCESSES</a> are distillation and reverse <a href="https://interviewquestions.tuteehub.com/tag/osmosis-1140049" style="font-weight:bold;" target="_blank" title="Click to know more about OSMOSIS">OSMOSIS</a>.</p></body></html> | |
| 27. |
It is dangerous to leave the car engine running in a closed garage, because it may cause serious pollution due to poisoning by emission of |
| Answer» <html><body><p> CO</p><br/><br/><p>The extremely <a href="https://interviewquestions.tuteehub.com/tag/high-479925" style="font-weight:bold;" target="_blank" title="Click to know more about HIGH">HIGH</a> concentrations of 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> produced by an engine can raise CO concentrations in a closed building so quickly that a person may <a href="https://interviewquestions.tuteehub.com/tag/collapse-921718" style="font-weight:bold;" target="_blank" title="Click to know more about COLLAPSE">COLLAPSE</a> before they even realize there is a problem.<br/>Carbon monoxide reduces the <a href="https://interviewquestions.tuteehub.com/tag/amount-374803" style="font-weight:bold;" target="_blank" title="Click to know more about AMOUNT">AMOUNT</a> of oxygen to the brain, causing CO intoxication, and lack of reasoning. Hence option D is correct <a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a>.</p></body></html> | |
| 28. |
If the equilibrium constants for the systems H2 + I2 -> 2HI and 2HI -> H2 + I2 are K1 and K2 respectively, the relationship between K1 and K2 is : |
| Answer» <html><body><p> K<sub>1</sub>= 1/K<sub>2</sub></p><br/><br/><p>Relationship between K<sub>1</sub> and K<sub>2</sub> is K<sub>1</sub> = 1/K<sub>2</sub></p></body></html> | |
| 29. |
Bhopal gas tragedy is associated with leakage of |
| Answer» <html><body><p> Methyl isocyanate</p><br/><br/><p>The Bhopal disaster, also referred to as the Bhopal gas tragedy, was a gas leak incident in India, considered one of the world’s worst industrial disasters. It occurred on the night of 2–3 December, <a href="https://interviewquestions.tuteehub.com/tag/1984-1801594" style="font-weight:bold;" target="_blank" title="Click to know more about 1984">1984</a> at the Union Carbide India Limited (<a href="https://interviewquestions.tuteehub.com/tag/ucil-716453" style="font-weight:bold;" target="_blank" title="Click to know more about UCIL">UCIL</a>) pesticide plant in Bhopal, Madhya Pradesh. Over 500,000 people were exposed to methyl isocyanate gas and other chemicals. The toxic substance <a href="https://interviewquestions.tuteehub.com/tag/made-3718337" style="font-weight:bold;" target="_blank" title="Click to know more about MADE">MADE</a> its way in and around the shantytowns located near the plant. Estimates vary on the <a href="https://interviewquestions.tuteehub.com/tag/death-435466" style="font-weight:bold;" target="_blank" title="Click to know more about DEATH">DEATH</a> toll. The official immediate death toll was 2,259. The government of Madhya Pradesh confirmed a total of 3,787 deaths related to the gas release. Others estimate 8,000 <a href="https://interviewquestions.tuteehub.com/tag/died-7331699" style="font-weight:bold;" target="_blank" title="Click to know more about DIED">DIED</a> within two weeks and another 8,000 or more have since died from gas-related diseases.</p></body></html> | |
| 30. |
Percentage of carbon in steel ranges from |
| Answer» <html><body><p> 0.1 to 1.5</p><br/><br/><p>Steel is an alloy made by combining iron and other elements, the most common of these being carbon. When carbon is used, its content in the steel is between 0.2% and 2.1% by weight, depending on the grade. Other <a href="https://interviewquestions.tuteehub.com/tag/alloying-857985" style="font-weight:bold;" target="_blank" title="Click to know more about ALLOYING">ALLOYING</a> elements sometimes used are manganese, chromium, vanadium and tungsten. Carbon and other elements act as a hardening agent, preventing dislocations in the iron atom crystal lattice from sliding past one another. Varying the <a href="https://interviewquestions.tuteehub.com/tag/amount-374803" style="font-weight:bold;" target="_blank" title="Click to know more about AMOUNT">AMOUNT</a> of alloying elements and the <a href="https://interviewquestions.tuteehub.com/tag/form-996208" style="font-weight:bold;" target="_blank" title="Click to know more about FORM">FORM</a> of their presence in the steel (solute elements, precipitated phase) controls qualities such as the hardness, ductility, and tensile strength of the resulting steel. Steel with increased carbon content can be made harder and stronger than iron, but such steel 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> less ductile than iron. Alloys with a higher than 2.1% carbon content are <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 cast iron because of their lower melting point and good castability.</p></body></html> | |
| 31. |
The influence of temperature on reaction rate is predicted by |
| Answer» <html><body><p> Arrhenius equation</p><br/><br/><p>The main reason that <a href="https://interviewquestions.tuteehub.com/tag/temperature-11887" style="font-weight:bold;" target="_blank" title="Click to know more about TEMPERATURE">TEMPERATURE</a> increases the <a href="https://interviewquestions.tuteehub.com/tag/rate-1177476" style="font-weight:bold;" target="_blank" title="Click to know more about RATE">RATE</a> of reaction is that more of the colliding particles will have the necessary activation <a href="https://interviewquestions.tuteehub.com/tag/energy-15288" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGY">ENERGY</a> resulting in more successful collisions (when bonds are <a href="https://interviewquestions.tuteehub.com/tag/formed-464209" style="font-weight:bold;" target="_blank" title="Click to know more about FORMED">FORMED</a> between reactants). The <a href="https://interviewquestions.tuteehub.com/tag/influence-1043703" style="font-weight:bold;" target="_blank" title="Click to know more about INFLUENCE">INFLUENCE</a> of temperature is described by the Arrhenius equation.</p></body></html> | |
| 32. |
Alum is used as |
| Answer» <html><body><p> A purifier for water</p><br/><br/><p>It is aluminum potassium sulphate. This is the type of alum that you <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 the <a href="https://interviewquestions.tuteehub.com/tag/grocery-477270" style="font-weight:bold;" target="_blank" title="Click to know more about GROCERY">GROCERY</a> store for pickling and in baking <a href="https://interviewquestions.tuteehub.com/tag/powder-603608" style="font-weight:bold;" target="_blank" title="Click to know more about POWDER">POWDER</a>. It is also used in <a href="https://interviewquestions.tuteehub.com/tag/leather-1070780" style="font-weight:bold;" target="_blank" title="Click to know more about LEATHER">LEATHER</a> tanning, as a flocculant in water purification, as an ingredient in aftershave and as a treatment to fireproof <a href="https://interviewquestions.tuteehub.com/tag/textiles-1243362" style="font-weight:bold;" target="_blank" title="Click to know more about TEXTILES">TEXTILES</a>.</p></body></html> | |
| 33. |
The temperature of oxy-acetylene flame is around |
| Answer» <html><body><p> 4000°<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></p><br/><br/><p>Flames are formed when a fuel gas, like acetylene, reacts with a support gas such as oxygen. This reaction creates a lot of heat and <a href="https://interviewquestions.tuteehub.com/tag/light-1073401" style="font-weight:bold;" target="_blank" title="Click to know more about LIGHT">LIGHT</a>, which 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> as a flame. An oxygen acetylene flame can create temperatures over 3200°C. Pure oxygen, instead of air (20% oxygen/80% nitrogen), is <a href="https://interviewquestions.tuteehub.com/tag/used-2318798" style="font-weight:bold;" target="_blank" title="Click to know more about USED">USED</a> to increase the flame temperature to allow localized melting of the work piece material (e.g. steel) in a room environment. A common propane/air flame burns at about 3,630 <a href="https://interviewquestions.tuteehub.com/tag/degree-47" style="font-weight:bold;" target="_blank" title="Click to know more about DEGREE">DEGREE</a> F (2,000 degree C), a propane/ oxygen flame burns at about 4,530 degree F (2,500 degree C), and an acetylene/oxygen flame burns at about 6,330 degree F (3,500 degree C).</p></body></html> | |
| 34. |
Which of the following type of coal has the lowest proportion of volatile matter ? |
| Answer» <html><body><p> Anthracite</p><br/><br/><p>Anthracite has the <a href="https://interviewquestions.tuteehub.com/tag/lowest-1081124" style="font-weight:bold;" target="_blank" title="Click to know more about LOWEST">LOWEST</a> <a href="https://interviewquestions.tuteehub.com/tag/proportion-1170266" style="font-weight:bold;" target="_blank" title="Click to know more about PROPORTION">PROPORTION</a> of <a href="https://interviewquestions.tuteehub.com/tag/volatilebrbr-3264686" style="font-weight:bold;" target="_blank" title="Click to know more about VOLATILE">VOLATILE</a> <a href="https://interviewquestions.tuteehub.com/tag/matter-22749" style="font-weight:bold;" target="_blank" title="Click to know more about MATTER">MATTER</a>.</p></body></html> | |
| 35. |
Taj Mahal is greatly affected due to : |
| Answer» <html><body><p> Acid rain</p><br/><br/><p>When sulphur pollutants fall on to buildings made from limestone and sandstone they react with <a href="https://interviewquestions.tuteehub.com/tag/minerals-1097082" style="font-weight:bold;" target="_blank" title="Click to know more about MINERALS">MINERALS</a> in the stone to form a <a href="https://interviewquestions.tuteehub.com/tag/powdery-2945857" style="font-weight:bold;" target="_blank" title="Click to know more about POWDERY">POWDERY</a> substance that can be washed away by rain. This is known as acid rain. Famous buildings like the Statue of Liberty in <a href="https://interviewquestions.tuteehub.com/tag/new-1114486" style="font-weight:bold;" target="_blank" title="Click to know more about NEW">NEW</a> York, the Taj Mahal in India and St. Paul's Cathedral in London have all been <a href="https://interviewquestions.tuteehub.com/tag/damaged-2562636" style="font-weight:bold;" target="_blank" title="Click to know more about DAMAGED">DAMAGED</a> by this sort of air <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> | |
| 36. |
Which gas is used as fire extinguisher ? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/carbon-16249" style="font-weight:bold;" target="_blank" title="Click to know more about CARBON">CARBON</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>Carbon dioxide is <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 href="https://interviewquestions.tuteehub.com/tag/fire-989497" style="font-weight:bold;" target="_blank" title="Click to know more about FIRE">FIRE</a> <a href="https://interviewquestions.tuteehub.com/tag/extinguisher-2629680" style="font-weight:bold;" target="_blank" title="Click to know more about EXTINGUISHER">EXTINGUISHER</a>.</p></body></html> | |
| 37. |
Which of the following is not a commercial source of energy? |
| Answer» <html><body><p> Firewood</p><br/><br/><p>Firewood is not a <a href="https://interviewquestions.tuteehub.com/tag/commercial-923169" style="font-weight:bold;" target="_blank" title="Click to know more about COMMERCIAL">COMMERCIAL</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 <a href="https://interviewquestions.tuteehub.com/tag/energy-15288" style="font-weight:bold;" target="_blank" title="Click to know more about ENERGY">ENERGY</a>.</p></body></html> | |
| 38. |
When iron rusts, its weight |
| Answer» <html><body><p> Increases</p><br/><br/><p>When iron or any other metal oxidizes, <a href="https://interviewquestions.tuteehub.com/tag/oxygen-1144542" style="font-weight:bold;" target="_blank" title="Click to know more about OXYGEN">OXYGEN</a> from 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> <a href="https://interviewquestions.tuteehub.com/tag/combines-922862" style="font-weight:bold;" target="_blank" title="Click to know more about COMBINES">COMBINES</a> with the iron to <a href="https://interviewquestions.tuteehub.com/tag/make-546668" style="font-weight:bold;" target="_blank" title="Click to know more about MAKE">MAKE</a> iron oxide or rust. So, weight of the bar increases, due to the increased weight of oxygen which has combined with the iron.</p></body></html> | |
| 39. |
Galena is a mineral of |
| Answer» <html><body><p> Lead</p><br/><br/><p>Galena, also called lead glance, is the natural mineral form of lead(II) sulphide (PbS). It is the most important <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 lead and an important source of silver. Galena is one of the most abundant and widely distributed <a href="https://interviewquestions.tuteehub.com/tag/sulfide-2284700" style="font-weight:bold;" target="_blank" title="Click to know more about SULFIDE">SULFIDE</a> <a href="https://interviewquestions.tuteehub.com/tag/minerals-1097082" style="font-weight:bold;" target="_blank" title="Click to know more about MINERALS">MINERALS</a>. It crystallizes in the cubic <a href="https://interviewquestions.tuteehub.com/tag/crystal-940005" style="font-weight:bold;" target="_blank" title="Click to know more about CRYSTAL">CRYSTAL</a> system often showing octahedral forms.</p></body></html> | |
| 40. |
The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing is |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/helium-484142" style="font-weight:bold;" target="_blank" title="Click to know more about HELIUM">HELIUM</a></p><br/><br/><p>Trimix is a mixture of oxygen, nitrogen and helium and is often used at depth in technical <a href="https://interviewquestions.tuteehub.com/tag/diving-957424" style="font-weight:bold;" target="_blank" title="Click to know more about DIVING">DIVING</a> and commercial diving instead of air to reduce nitrogen <a href="https://interviewquestions.tuteehub.com/tag/narcosis-7700943" style="font-weight:bold;" target="_blank" title="Click to know more about NARCOSIS">NARCOSIS</a> and to avoid the <a href="https://interviewquestions.tuteehub.com/tag/dangers-943759" style="font-weight:bold;" target="_blank" title="Click to know more about DANGERS">DANGERS</a> of oxygen toxicity.</p></body></html> | |
| 41. |
Water gas is the mixture of |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/carbon-16249" style="font-weight:bold;" target="_blank" title="Click to know more about CARBON">CARBON</a> monoxide and <a href="https://interviewquestions.tuteehub.com/tag/hydrogen-22331" style="font-weight:bold;" target="_blank" title="Click to know more about HYDROGEN">HYDROGEN</a></p><br/><br/><p>Water gas is a mixture of carbon monoxide (<a href="https://interviewquestions.tuteehub.com/tag/co-920124" style="font-weight:bold;" target="_blank" title="Click to know more about CO">CO</a>) and hydrogen (H<sub>2</sub>) <a href="https://interviewquestions.tuteehub.com/tag/produced-592947" style="font-weight:bold;" target="_blank" title="Click to know more about PRODUCED">PRODUCED</a> by passing steam over red-hot coke using the <a href="https://interviewquestions.tuteehub.com/tag/endothermic-451233" style="font-weight:bold;" target="_blank" title="Click to know more about ENDOTHERMIC">ENDOTHERMIC</a> reaction.</p></body></html> | |
| 42. |
Which one amongst the following is not a Green House gas? |
| Answer» <html><body><p> Nitrogen</p><br/><br/><p>Nitrogen is not a <a href="https://interviewquestions.tuteehub.com/tag/green-476835" style="font-weight:bold;" target="_blank" title="Click to know more about GREEN">GREEN</a> <a href="https://interviewquestions.tuteehub.com/tag/house-1030115" style="font-weight:bold;" target="_blank" title="Click to know more about HOUSE">HOUSE</a> <a href="https://interviewquestions.tuteehub.com/tag/gas-1003521" style="font-weight:bold;" target="_blank" title="Click to know more about GAS">GAS</a>.</p></body></html> | |
| 43. |
The common refrigerant in domestic refrigerator is |
| Answer» <html><body><p> Freon</p><br/><br/><p>Common refrigerants used in <a href="https://interviewquestions.tuteehub.com/tag/domestic-957937" style="font-weight:bold;" target="_blank" title="Click to know more about DOMESTIC">DOMESTIC</a> <a href="https://interviewquestions.tuteehub.com/tag/refrigerators-1181977" style="font-weight:bold;" target="_blank" title="Click to know more about REFRIGERATORS">REFRIGERATORS</a> are freon, neon and nitrogen. It <a href="https://interviewquestions.tuteehub.com/tag/flows-993448" style="font-weight:bold;" target="_blank" title="Click to know more about FLOWS">FLOWS</a> through four components of <a href="https://interviewquestions.tuteehub.com/tag/refrigerator-1181966" style="font-weight:bold;" target="_blank" title="Click to know more about REFRIGERATOR">REFRIGERATOR</a> again and again. These four components are cooling chamber, compressor, heat exchanger and expander.</p></body></html> | |
| 44. |
Cooking gas is a mixture of |
| Answer» <html><body><p> Butane and propane</p><br/><br/><p>Liquefied petroleum <a href="https://interviewquestions.tuteehub.com/tag/gas-1003521" style="font-weight:bold;" target="_blank" title="Click to know more about GAS">GAS</a> (LPG), <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/called-907796" style="font-weight:bold;" target="_blank" title="Click to know more about CALLED">CALLED</a> LP gas, any of several <a href="https://interviewquestions.tuteehub.com/tag/liquid-1075124" style="font-weight:bold;" target="_blank" title="Click to know more about LIQUID">LIQUID</a> mixtures of the volatile hydrocarbons <a href="https://interviewquestions.tuteehub.com/tag/propene-1169814" style="font-weight:bold;" target="_blank" title="Click to know more about PROPENE">PROPENE</a>, propane, butene, and butane.</p></body></html> | |
| 45. |
How many neutrons does iron have? |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/30-304807" style="font-weight:bold;" target="_blank" title="Click to know more about 30">30</a></p><br/><br/><p>Iron has 30 <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></body></html> | |
| 46. |
Brass is an alloy of |
| 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> and <a href="https://interviewquestions.tuteehub.com/tag/copper-933790" style="font-weight:bold;" target="_blank" title="Click to know more about COPPER">COPPER</a></p><br/><br/><p>Brass is an <a href="https://interviewquestions.tuteehub.com/tag/alloy-857965" style="font-weight:bold;" target="_blank" title="Click to know more about ALLOY">ALLOY</a> of zinc and copper.</p></body></html> | |
| 47. |
Main pollutants released from iron and steel industry are |
| Answer» <html><body><p> CO, CO<sub>2</sub> and SO<sub>2</sub></p><br/><br/><p>Main <a href="https://interviewquestions.tuteehub.com/tag/pollutants-1158354" style="font-weight:bold;" target="_blank" title="Click to know more about POLLUTANTS">POLLUTANTS</a> <a href="https://interviewquestions.tuteehub.com/tag/released-613817" style="font-weight:bold;" target="_blank" title="Click to know more about RELEASED">RELEASED</a> from <a href="https://interviewquestions.tuteehub.com/tag/iron-1051344" style="font-weight:bold;" target="_blank" title="Click to know more about IRON">IRON</a> and steel industry are CO, CO<sub>2</sub> and SO<sub>2</sub>.</p></body></html> | |
| 48. |
Which of the following statements are correct about chloroform?a. Liquid fuelb. Anaesthetic in naturec. Produces phosgened. Fire extinguisher |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a>, C</p><br/><br/><p>Chloroform was once a widely used anesthetic. Its vapor <a href="https://interviewquestions.tuteehub.com/tag/depresses-7675341" style="font-weight:bold;" target="_blank" title="Click to know more about DEPRESSES">DEPRESSES</a> the central nervous system of a patient, allowing a <a href="https://interviewquestions.tuteehub.com/tag/doctor-295" style="font-weight:bold;" target="_blank" title="Click to know more about DOCTOR">DOCTOR</a> to perform <a href="https://interviewquestions.tuteehub.com/tag/various-1443317" style="font-weight:bold;" target="_blank" title="Click to know more about VARIOUS">VARIOUS</a> otherwise painful procedures. Chronic chloroform exposure can damage the liver where chloroform is metabolized to phosgene.</p></body></html> | |
| 49. |
Vulcanized rubber contains sulphur |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>-5%</p><br/><br/><p>A vulcanized flexible tyre rubber contains about 3 –5% of sulphur whereas <a href="https://interviewquestions.tuteehub.com/tag/hard-1015537" style="font-weight:bold;" target="_blank" title="Click to know more about HARD">HARD</a> rubber (ebonite) contains about 32% of sulphur. The <a href="https://interviewquestions.tuteehub.com/tag/stiffness-15382" style="font-weight:bold;" target="_blank" title="Click to know more about STIFFNESS">STIFFNESS</a> of vulcanized rubber depends on the amount of sulphur <a href="https://interviewquestions.tuteehub.com/tag/added-367625" style="font-weight:bold;" target="_blank" title="Click to know more about ADDED">ADDED</a>.</p></body></html> | |
| 50. |
Acid rain is caused by the pollution of environment 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> <a href="https://interviewquestions.tuteehub.com/tag/oxide-1144484" style="font-weight:bold;" target="_blank" title="Click to know more about OXIDE">OXIDE</a> and Sulphur dioxide</p><br/><br/><p>Acid rain is caused by a chemical reaction that begins when compounds like sulphur dioxide and <a href="https://interviewquestions.tuteehub.com/tag/nitrogen-1118291" style="font-weight:bold;" target="_blank" title="Click to know more about NITROGEN">NITROGEN</a> 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 chemicals to form more acidic pollutants, known as acid rain.</p></body></html> | |