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91
Ceramic balls can be used to
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Answer: Option A
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92
Which one of the following is used in the production of explosives?
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Answer: Option A
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93
A mixture of which one of the following pairs of gases is the cause of occurrence of most of the explosions in mines?
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Answer: Option C
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94
Consider the following statements.
1. Hard soaps (common bar soaps) are the sodium salts of fatty acids.
2. Soft soaps are the potassium salts of fatty acids and semi-solid in nature.
Which of the statement(s) given above is/are correct?
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Answer: Option C
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95
The basic chemical building block of natural rubber obtained from trees is
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Answer: Option A
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96
Acidic drain cleaners made of . . . . . . . . or . . . . . . . . add are powerful enough to clear heavy-duty hair, food, grease, soap scum or paper-based clogs in 15 minutes or less.
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Answer: Option C
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97
Which inorganic compound is used to manufacture soap, rayon, paper, explosives, dyes, and petroleum products?
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Answer: Option B
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98
The freezer in a refrigerator is fitted near the top
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Answer: Option C
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99
Which of the following substance is highly plastic?
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Answer: Option D
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100
Assertion (A) Synthetic detergents can lather well in hard water.
Reason (R) Synthetic detergents form soluble calcium and magnesium salts with hard water.
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Answer: Option A
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