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Q.

Which of the following metals is/are more reactive than hydrogen?

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a

Calcium

b

Aluminium

c

Zinc

d

All of the above 

answer is D.

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Detailed Solution

Calcium, aluminium and zinc are more reactive than hydrogen.
If we check the order for the reactivity series for the given metals, then it is arranged as potassium, sodium, calcium, magnesium, aluminium, carbon, zinc, iron, tin, lead, hydrogen, copper, mercury, silver, gold. Calcium, aluminium and zinc are more reactive as compared to hydrogen.
 
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