Chemistry Multiple Choice Short Questions 2:
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Chemistry Short Questions pdf 2
| 16. Philosopher’s Wool is |
| (a) Zinc carbonate |
| (b) Zinc sulphate |
| (c) Zinc oxide |
| (d) Zinc blende |
| 17. Synthetic detergents are made from |
| (a) Sodium stearate |
| (b) Sodium salt of benzene sulphonicacid |
| (c) Sodium salt of benzene car¬ boxylic acid |
| (d) Sodium palmitate |
| 18.The sewage obtained from water closets and urinals is known as |
| (a) Sanitary waste |
| (b) Industrial waste |
| (c) Garbage |
| (d) Sullage |
| 19. Maximum permissible concentration of total hardness in drinking water is |
| (a) 50 |
| (b) 100 |
| (c)200 |
| (d) 500 |
| 20. Electric fuse is an alloy of |
| (a) tin and lead |
| (b) zinc and lead |
| (c) copper and iron |
| (d) carbon and tin |
| 21. The chemical used for cloud seeding for artificial rains is |
| (a) Silver Nitrate |
| (b) Potassium Bromide |
| (c) Silver Iodide |
| (d) Potassium Nitrate |
| 22. Which among the following is liquid non-metal? |
| (a) Mercury |
| (b) Bromine |
| (c) Water |
| (d) Alcohol |
| 23. In silvery paints, the main constituent present is |
| (a) Aluminium powder |
| (b) Silver powder |
| (c) Lead powder |
| (d) White lead |
| 24. Which one of the following is a greenhouse gas? |
| (a) Nitrogen |
| (b) Helium |
| (c) Carbon dioxide |
| (d) Sulphur dioxide |
| 25. Which of the following is a method/process of disposing of solid waste which cannot be reused or recycled? |
| (a) Landfills |
| (b) Incineration |
| (c) pyrolysis and Gasification |
| (d) All the above |
| 26. Laughing gas is |
| (a) Nitric oxide |
| (b) Nitrous oxide |
| (c) Nitrogen trioxide |
| (d) Nitrogen pentoxide |
| 27. Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful |
| (a) solar ultraviolet radiation |
| (b) solar infrared radiation |
| (c) CO2 in the air |
| (d) SO2 in the air |
| 28. Which of the following is not a greenhouse gas? |
| (a) Hydrogen |
| (b) Carbon dioxide |
| (c) Nitric oxide |
| (d) Chlorofluorocarbon |
| 29. Wax used for making candle is chemically a mixture of |
| (a) aliphatic hydrocarbons |
| (b) aromatic hydrocarbons |
| (c) cyclic hydrocarbons |
| (d) aliphatic and aromatic hydrocarbons |
| 30. Litmus is obtained from |
| (a) a bacterium |
| (b) a fungus |
| (c) an alga |
| (d) lichen |
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| 31. Vinegar made by fermentation from cane sugar contains |
| (a) palmitic acid |
| (b) lactic acid |
| (c) citric acid |
| (d) acetic acid |
| 32. Photo oxidation process is initiated by |
| (a) light |
| (b) heat |
| (c) oxygen |
| (d) catalyst |
| 33. Ultraviolet radiation striking the earth is due to the depletion of |
| (a) carbon monoxide |
| (b) carbon dioxide |
| (c) ozone |
| (d) oxygen |
| 34. Major gaseous pollutant of the thermal power station is |
| (a) HjS |
| (b) NH3 |
| (c) N02 |
| (d) S02 |
| 35. The process of removing calcium and magnesium from hard water is known as |
| (a) Sedimentation |
| (b) Filtration |
| (c) Flocculation |
| (d) Water softening |
| 36. The tip of the match-stick contains |
| (a) phosphorus pent oxide |
| (b) white phosphorus |
| (c) red phosphorus |
| (d) phosphorus trichloride |
| 37. Match the source in Column B with the product of Column A. |
| Column A(Product) Column B(Source) |
| (a) Formic acid (a) Lemon |
| (b) Citric acid (b) Tamarind |
| (c) Tartaric acid (c) Ants |
| (a) 3 2 1 |
| (b) 3 1 2 |
| (c) 2 3 1 |
| (d) 2 1 3 |
| 38. Commercially, sodium bicarbonate is known as |
| (a) Washing soda |
| (b) Baking soda |
| (c) Bleaching powder |
| (d) Soda ash |
| 39. An emulsifier is an agent which |
| (a) stabilises an emulsion |
| (b) aids the flocculation of an emulsion |
| (c) accelerates the dispersion |
| (d) homogenizes an emulsion |
| 40. Mortar is a mixture of water, sand and |
| (a) Slaked lime |
| (b) Quicklime |
| (c) Limestone |
| (d) Gypsum |
| 41. Which of the following substance is highly plastic? |
| (a) Quartz |
| (b) Mica |
| (c) Granite |
| (d) Clay |
| 42. The National Chemical Laboratory (India) is located in |
| (a) Mumbai |
| (b) Bangaluru |
| (c) Hyderabad |
| (d) Pune |
| 43. Aspirin is common name of |
| (a) Salicylic Acid |
| (b) Salicylate |
| (c) Methyl Salicylate |
| (d) Acetyl Salicylic Acid |
| 44. Carbon monoxide is an inflammable gas. Which one of the following is also inflammable? |
| (a) Helium |
| (b) Nitrogen |
| (c) Oxygen |
| (d) Hydrogen |
| 45. Which one of the following metals. Does not react with water to produce Hydrogen? |
| (a) Potassium |
| (b) Cadmium |
| (c) Sodium |
| (d) Lithium |
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| 46. Ozone consists of |
| (a) Oxygen only |
| (b) Oxygen and Nitrogen |
| (c) Hydrogen and Carbon |
| (d) Oxygen and Carbon |
| 47. One of the constituents of tear gas is |
| (a) Ethane |
| (b) Ethanol |
| (c) Ether |
| (d) Chloropicrin |
| 48. An atomic clock is based on transitions in |
| (a) Sodium |
| (b) Caesium |
| (c) Magnesium |
| (d) Aluminium |
| 49. Silver halides are used in photographic plates because they are |
| (a) oxidized in air |
| (b) soluble in hypo solution |
| (c) reduced by light |
| (d) totally colourless |
| 50. Tetra ethyle lead (TEL) is |
| (a) a catalyst in burning fossil fuel |
| (b) an antioxidant |
| (c) a reductant |
| (d) an antiknock compound |
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