Chemistry Short Question part-2

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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