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Question

Which of the following element is affected by water?

A
C
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B
Si
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C
Sn
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D
Pb
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Solution

The correct option is C Sn
Carbon, silicon and germanium are not affected by water.
Tin decomposes steam to form dioxide and dihydrogen gas.
Sn+2H2OSnO2+2H2
Lead is unaffected by water, due to the protective oxide film formation.

Hence, the correct answer is option (c).


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