41. Silicon is used in
42. Which of the inert gases can form compounds?
43. Vulcanized rubber contains sulphur
44. Which of the following alloy is used in making magnet ?
45. In its reaction with silver nitrate, C2H2 shows
46. Yellow Cake an item of smuggling across border is
47. The transuranium elements are the chemical elements with atomic numbers greater than
48. Which of the following elements is non-radioactive ?
49. Which of the following is used in dating archaeological findings ?
50. German silver used for making utensils is an alloy of
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