MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the highest reaction among halogens? |
| A. | chlorine |
| B. | Iodine |
| C. | fluorine |
| D. | bromine |
| Answer» D. bromine | |
| 2. |
By which process does alum clean the dirty water? |
| A. | absorption |
| B. | dialysis |
| C. | Skand |
| D. | Absorption |
| Answer» D. Absorption | |
| 3. |
What is the function of depolarizer in dry cell? |
| A. | Sodium chloride |
| B. | potassium hydroxide |
| C. | manganese dioxide |
| D. | sulphuric acid |
| Answer» D. sulphuric acid | |
| 4. |
Tooth gum is made of which material which is very hard? |
| A. | copper chloride |
| B. | calcium phosphate |
| C. | calcium carbide |
| D. | calcium carbonate |
| Answer» C. calcium carbide | |
| 5. |
How are ruby and sapphire known chemically? |
| A. | silicon dioxide |
| B. | borin nitrite |
| C. | aluminum oxide |
| D. | none of these |
| Answer» D. none of these | |
| 6. |
Which gas is released when dilute sulfuric acid is poured on granular zinc? |
| A. | hydrogen gas |
| B. | sulphur dioxide |
| C. | oxygen gas |
| D. | no gas |
| Answer» B. sulphur dioxide | |
| 7. |
What is the pH value of a neutral solution? |
| A. | 7 is |
| B. | is 2 |
| C. | 9 is |
| D. | 11 is |
| Answer» B. is 2 | |
| 8. |
What is an oxidation-reduction reaction called? |
| A. | endothermic reaction |
| B. | redox reaction |
| C. | precipitation reaction |
| D. | exothermic reaction |
| Answer» C. precipitation reaction | |
| 9. |
Which acid is present in tamarind? |
| A. | methanoic acid |
| B. | tartaric acid |
| C. | lactic acid |
| D. | oxalic acid |
| Answer» C. lactic acid | |
| 10. |
The pH value of sodium hydroxide is approximately? |
| A. | 11 is |
| B. | is 12 |
| C. | is 13 |
| D. | is 14 |
| Answer» E. | |
| 11. |
What type of chemical reaction is the combustion of natural gas? |
| A. | combination reaction |
| B. | decomposition reaction |
| C. | exothermic reaction |
| D. | Dissolution reaction |
| Answer» D. Dissolution reaction | |
| 12. |
When copper powder is heated in air, a layer of copper oxide is deposited on its surface. What is the color of this layer? |
| A. | Black |
| B. | white |
| C. | Yellow |
| D. | brown |
| Answer» B. white | |
| 13. |
Which one of the following does not contain silver? |
| A. | German Silver |
| B. | horn silver |
| C. | ruby silver |
| D. | Lunar Caustic |
| Answer» B. horn silver | |
| 14. |
Nuclear fuel is abundantly available in India? |
| A. | uranium |
| B. | Plutonium |
| C. | radium |
| D. | Thorium |
| Answer» E. | |
| 15. |
The decomposition of vegetable-vegetables into compost is an example of which reaction? |
| A. | Heat absorbent |
| B. | Antiseptic |
| C. | Replacement |
| D. | Ambiguous |
| Answer» C. Replacement | |
| 16. |
Green color in fireworks is due to the presence of? |
| A. | sodium |
| B. | strontium |
| C. | barium |
| D. | magnesium |
| Answer» D. magnesium | |
| 17. |
The smell of onion and garlic is due to the presence of which element? |
| A. | lithium |
| B. | chlorine |
| C. | potassium |
| D. | sodium |
| Answer» D. sodium | |
| 18. |
Plaster of Paris chemically? |
| A. | calcium oxide |
| B. | calcium sulfate |
| C. | calcium carbonate |
| D. | calcium oxalate |
| Answer» C. calcium carbonate | |
| 19. |
Which metal is present in myoglobin? |
| A. | copper |
| B. | iron |
| C. | Gold |
| D. | silver |
| Answer» C. Gold | |
| 20. |
Which one of the following is called Yashad flower? |
| A. | zinc oxide |
| B. | zinc chloride |
| C. | zinc nitrate |
| D. | zinc bromide |
| Answer» B. zinc chloride | |
| 21. |
What metals are in brass? |
| A. | copper and iron |
| B. | copper and nickel |
| C. | copper and zinc |
| D. | nickel and iron |
| Answer» D. nickel and iron | |
| 22. |
The most toxic metal pollutant of automatic vehicle vacuum is? |
| A. | lead |
| B. | Mercury |
| C. | cadmium |
| D. | Copper |
| Answer» B. Mercury | |
| 23. |
What gives glass its dark blue color? |
| A. | cobalt oxide |
| B. | nickel oxide |
| C. | ferrous oxide |
| D. | none of these |
| Answer» B. nickel oxide | |
| 24. |
What is ultimately formed as a result of radioactive electrolysis of uranium? |
| A. | radium |
| B. | lead |
| C. | polonium |
| D. | Thorium |
| Answer» C. polonium | |
| 25. |
Which of the following is the best heat conductor? |
| A. | alcohol |
| B. | Water |
| C. | ether |
| D. | mercury |
| Answer» E. | |
| 26. |
Which of the following is found in maximum quantity in the sea? |
| A. | aluminum |
| B. | lithium |
| C. | Iron |
| D. | Masodium |
| Answer» E. | |
| 27. |
What is vermilion from chemical point of view? |
| A. | mercuric sulfide |
| B. | potassium nitrate |
| C. | calcium carbonate |
| D. | none of these |
| Answer» B. potassium nitrate | |
| 28. |
Which chemical substance is coated on audio and video tapes? |
| A. | iron oxide |
| B. | silver iodide |
| C. | Sodium hydroxide |
| D. | none of these |
| Answer» B. silver iodide | |
| 29. |
Which of the following metals does not react with water to produce oxygen? |
| A. | cadmium |
| B. | lithium |
| C. | sodium |
| D. | potassium |
| Answer» B. lithium | |
| 30. |
What is the chemical name of limestone? |
| A. | calcium chloride |
| B. | calcium sulfate |
| C. | calcium oxide |
| D. | calcium carbonate |
| Answer» E. | |
| 31. |
Pearls are mainly made of? |
| A. | calcium sulfate |
| B. | calcium carbonate |
| C. | calcium oxide |
| D. | calcium oxalate |
| Answer» C. calcium oxide | |
| 32. |
The last member of each period is? |
| A. | a halogen |
| B. | a metal |
| C. | an inert gas |
| D. | a metalloid |
| Answer» D. a metalloid | |
| 33. |
The first member of each period is? |
| A. | an inert gas |
| B. | an alkali metal |
| C. | a metalloid |
| D. | a halogen |
| Answer» C. a metalloid | |
| 34. |
What is the most abundant metallic element on earth? |
| A. | Silicon |
| B. | iron |
| C. | oxygen |
| D. | Aluminum |
| Answer» D. Aluminum | |
| 35. |
What is thermal gypsum? |
| A. | Lime |
| B. | blueprint |
| C. | bleaching powder |
| D. | none of these |
| Answer» B. blueprint | |
| 36. |
Which is the most electronegative element? |
| A. | sodium |
| B. | lithium |
| C. | chlorine |
| D. | florin |
| Answer» E. | |
| 37. |
Who is the originator of modern periodic law? |
| A. | Mosle |
| B. | Avogadro |
| C. | Dalton |
| D. | mendeleev |
| Answer» B. Avogadro | |
| 38. |
What turns blue litmus paper red? |
| A. | alkali |
| B. | ashes |
| C. | acid |
| D. | salt |
| Answer» D. salt | |
| 39. |
Which of the following metals has such a low melting point that it melts by hand? |
| A. | gallium |
| B. | sodium |
| C. | potassium |
| D. | none of these |
| Answer» B. sodium | |
| 40. |
The salts which are free from acidic hydrogen atom or hydroxyl ion are called? |
| A. | common salt |
| B. | mixed salts |
| C. | acid salt |
| D. | phosphoric salt |
| Answer» B. mixed salts | |
| 41. |
What is the commercial name of sodium bicarbonate? |
| A. | Leave the washing |
| B. | soda ash |
| C. | Baking soda |
| D. | none of these |
| Answer» D. none of these | |
| 42. |
Hydrogen is an essential component of all acids, who said this for the first time? |
| A. | bronsted |
| B. | lorry |
| C. | Davy |
| D. | none of these |
| Answer» D. none of these | |
| 43. |
Does it have flavor? |
| A. | Sweet |
| B. | tasteless |
| C. | Tart taste |
| D. | saline |
| Answer» D. saline | |
| 44. |
The cooking gas supplied by gas agencies in cylinders is? |
| A. | gas |
| B. | Solid |
| C. | fluid |
| D. | a solution |
| Answer» D. a solution | |
| 45. |
Which of the following metals is the most inferior conductor? |
| A. | Gold |
| B. | silver |
| C. | lead |
| D. | iron |
| Answer» D. iron | |
| 46. |
Identify the man-made element? |
| A. | calcium |
| B. | californium |
| C. | Carbon |
| D. | Gold |
| Answer» C. Carbon | |
| 47. |
Which of the following is the main constituent of cement? |
| A. | ashes |
| B. | gypsum |
| C. | Limestone |
| D. | matiyar |
| Answer» D. matiyar | |
| 48. |
Also found in free state in nature? |
| A. | Gold |
| B. | copper |
| C. | silver |
| D. | all these |
| Answer» E. | |
| 49. |
What is the main ore of aluminum? |
| A. | lignite |
| B. | bauxite |
| C. | dolomite |
| D. | Copper |
| Answer» C. dolomite | |
| 50. |
Which of the following is not solid? |
| A. | potassium |
| B. | mercury |
| C. | sodium |
| D. | all these |
| Answer» C. sodium | |