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) Butyrated hydroxi anisole (d) Propyl alcohol
Answer: (c)
33. Which of the following insoluble in water?
(a)Silver Chloride (b) Calcium Chloride
(c) Sodium Nitrate (d) Magnisium 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) Anthrasite (c) Lignite (d) None of these
Answer: (a)
36. Pigments obtained from plants can be separated by:
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 offood 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) Sea shell
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 :
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