The first metal used by man was
Answer: B
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Which gas is known as "Fuel of Future" ?
Answer: D
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The method that cannot be used for removing permanent hardness of water is
Answer: D
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The law of constant proportions was enunciated by
Answer: D
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Biogas majorly contains ?
Answer: A
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Who proposed first atomic theory ?
Answer: B
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The substance that contains the maximum amount of nitrogen is ?
Answer: A
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The Latin word formica means ant. The name formic acid is derived from this Latin word because
Answer: C
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Formation of cation occurs by
Answer: B
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A particle which is similar to electron is
Answer: B
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