Brass gets discoloured in air because of the presence of which of the following gases in air?
Answer: B
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One fathom is equal to how many meters ?
Answer: C
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The oxide of Nitrogen used in medicine as anaesthetic is
Answer: D
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Which animal never drinks water in its entire life?
Answer: C
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Stains Of rust on clothes can be removed by -
Answer: D
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Heavy water is:
Answer: A
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Curd is sour due to presence of
Answer: B
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Atomic number is represented by which letter?
Answer: C
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Most soluble in water is:
Answer: D
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The gas predominantly responsible for global warning is
Answer: A
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