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81
In which of the following industries is mica used as a raw material?
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Answer: Option D
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82
When calcium oxide reacts with water, . . . . . . . . is formed as a product:
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Answer: Option C
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83
Magnesium ribbon burns with a bright white flame and turns into the . . . . . . . . colour powder.
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Answer: Option C
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84
What are the products as a result of thermal decomposition of lead nitrate?
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Answer: Option A
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85
Lime water turns milky on passing carbon dioxide gas through it due to the formation of:
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Answer: Option A
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86
Which of the following is the chemical name of baking soda?
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Answer: Option C
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87
What is the chemical name of lime water?
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Answer: Option D
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88
A copper substances when exposed to air gains a green coating due to the formation of
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Answer: Option B
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89
Metallurgy is a process-
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Answer: Option C
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90
Which product is formed when electricity is passed through a solution made in water of sodium chloride?
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Answer: Option D
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