The father of modern chemistry is
Answer: B
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In isotopes the number of neutrons are
Answer: B
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Whcih one is the compound in the following
Answer: C
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The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?
Answer: C
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A mixture of sand and naphthalene can be seperated by __________
Answer: B
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Which element found in all organic compounds ?
Answer: A
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Which one of the following is not a mixture
Answer: B
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The items amenable to detection by soft x-rays are
Answer: D
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Neutrino has
Answer: B
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Zone refining is used for the purification of
Answer: B
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