Multiple Choice Question Answer XXXXV — task. Science CBSE, Class 10.

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1. Reduction is

The gain of oxygen
The loss of hydrogen
The gain of hydrogen
None of these

2. Which of the following reactions is a redox reaction as well as displacement reaction?

\(ZnO\) + \(C\) → \(Zn\) + \(CO\)
\(2HgCl_2\) + \(SnCl_2\) → \(Hg_2Cl_2\) + \(SnCl_4\)
\(2Al\) + \(6HCl\) → \(2AlCl_3\) + \(3H_2\)
\(H_2S\) + \(Cl_2\) → \(2HCl\) + \(S\)

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