Which one of the following substances does not have a melting point
Answer: D
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The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is
Answer: A
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Artificial radioactivity elements are present in
Answer: D
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The metal used to recover copper from a solution of copper sulphate is ?
Answer: A
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Nucleus of Hydrogen atom consists of
Answer: C
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The nuclear particles which are assumed to hold the nucleons together are
Answer: D
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Which one of the following laws directly expalins the law of coservation of mass
Answer: C
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How many moles are there in 140g of Si (atomic mass of silicon is 28)
Answer: A
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The monomer of polythene is
Answer: B
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Conduction band electrons have more mobility than holes because they are
Answer: C
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