Chemistry- Questions and Answers 02
31. The element used for radiographic imaging:(a)Calcium (b) Strontium (c) Barium (d) Beryllium
Answer: (c)
32. An anti-oxidant often added to fat-containing foods to prevent rancidity:
(a)Ethyl benzoate (b) Methylated chlorobenzene
(c) Butyrate hydroxyanisole (d) Propyl alcohol
Answer: (c)
33. Which of the following insoluble in water?
(a)Silver Chloride (b) Calcium Chloride
(c) Sodium Nitrate (d) Magnesium Sulphate
Answer: (a)
34. An example of mineral acid:
(a) Citric acid (b) Formic acid
(c) Tartaric acid (d) Hydrochloric acid
Answer: (d)
35. The most abundant type of coal:
(a)Bituminous (b) Anthracite (c) Lignite (d) None of these
Answer: (a)
36. Pigments obtained from plants can be separated by:
(a)Magnet (b) Crystallisation
(c) Chromatography (d) Separating Funnel
Answer: (c)
37. Potassium permanganate is used to purify water. Which among the following properties of it helps in this action?
(a)Reducing (b) Oxidising (c) Sterilizing (d) Leaching
Answer: (b)
38. What type of reaction is in the digestion of food in human body?
(a)Decomposition (b) Hydrogenation
(c) Calcination (d) Incubation
Answer: (a)
39. Which of the following is called the ‘Mother of Pearl’?
(a)Ammolite (b) Nacre (c) Tusk (d) Seashell
Answer: (b)
40. Bleaching powder contains;
(a)Magnisium (b) Sodium (c) Calcium (d) Potassium
Answer: (c)
41. It is easily noticed the smell of the LPG gas because of which among the following?
(a)Butane (b) Propane (c) Methane (d) Ethanethiol
Answer: (d)
42. Teflon, the tough and fire-resistant polymer, containing the halogen:
(a)Chlorine (b) Flourine (c) Iodine (d) Bromine
Answer: (b)
43. Froth and foams are examples of the following:
(a)Gas suspended in liquid (b) Liquid suspended in gas
(c) Solid suspended in gas (d) None of these
Answer: (a)
44. The discomfort due to indigestion can be cured by taking:
(a)Baking soda (b) Vinegar (c) Naphthalene (d) Benzene
Answer: (a)
45. Chemical properties mostly resemble those of :
(a)Gold (b) Platinum (c) Barium (d) Germanium
Answer: (c)
46. If rubbing vinegar on the stung area of the skin gives relief, then the person has been stung by:
(a)Ant (b) Cockroach (c)Bee (d) Wasp
Answer: (d)
47. The largest diamond:
(a) Kohinoor (b) Cullinan
(c) Hope (d) Star
Answer: (b)
48. Which among the following qualities of iron is best based upon iron content?
(a) Magnetite (b) Haematite (c)Limonite (d) Siderite
Answer: (a)
49. Spoilage of potato chips is prevented by packing them in plastic bags in an
atmosphere of:
(a)Oxygen (b) Nitrogen (c) Argon (d) Chlorine
Answer: (b)
50. Which among the following metal is used in railroad flares?
(a)Germanium (b) Cadmium (c) Strontium (d) Tin
Answer: (c)
51. The process by which tea leaves are separated from prepared tea is called:
(a)Distillation (b) Filtration (c) Evaporation (d) Solvent extraction
Answer: (b)
52.......... All alloy of -------- with any other metal is known as Amalgam.
(a) Mercury (b) Iron
(c) Copper (d) Silver
Answer: (a)
53. Which one of the following is used as a moderator in a nuclear reactor?
(a) Coal (b) Paraffin
(c) Lead (d) Graphite
Answer: (d)
54. Chlorine was discovered by:
(a) Joseph Priestly (b) Paul Muller
(c) Joseph Black (d) Carl Scheele
Answer: (d)
55. Who categorised elements according to atomic number?
(a) Mosley (b) Napier
(c) Mendeleev (d) Priestly
Answer: (a)
56. Beryllium Aluminium Silicate is known as:
(a) Emerald (b) Topaz
(c) Diamond (d) Quartz
Answer: (a)
57. Methanoicacid is another name of:
(a) Lactic acid (b) Malic acid
(c) Formic acid (d) Prussic acid
Answer: (c)
58. The first organic compound prepared in the laboratory:
(a) Ammonia (b) Urea
(c) Methane (d) Benzene
Answer: (b)
59. The isotope used for the treatment of Cancer:
(a) Carbon-14 (b) Uranium-238
(c) Cobalt-60 (d) None of these
Answer: (c)
60. Kovar is an alloy of Iron and---------
(a) Lead (b) Copper
(c) Tin (d) Cobalt
Answer: (d)
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