The metal does not give H2 on treatment with dilute HCL is
Answer: Option C
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The number of g-molecule of oxygen in 6.02 x 1024CO molecules is
The most extensive, commercially useful source of thorium as monazite sand occurs in India at
Answer: Option D
The main active constituent of tea and coffee is
The maximum number of isomers for an alkene with molecular formula C4H8 is
The hardest form of carbon is
Answer: Option E
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