Which one of the following is a natural colloid ?
Answer: B
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Air is a
Answer: C
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The ejection of electrons when a metal surface is irradiated is known as
Answer: C
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Antimony is
Answer: D
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Natural rubber is a polymer derived from ?
Answer: A
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What is extracted from Bauxite ?
Answer: D
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Which gas is filled in refrigerators ?
Answer: D
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Petroleum is found in ?
Answer: C
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Nucleons are
Answer: A
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Oil of vitriol is
Answer: B
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