Q.

Student added zinc granules to dilute hydrochloric acid. Then what is the conclusion of the reaction.

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a

Student feel hot when he touched bottom of the beaker and concluded reaction as exothermic reaction.

b

The gas liberated put off the burning match stick with pop sound and hence the concluded liberation of hydrogen gas

c

Zinc displaces hydrogen from hydrochloric acid and concluded the reaction has chemical displacement reaction.

d

 All

answer is D.

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Detailed Solution

The gas liberated put off the burning match stick with pop sound and hence the concluded liberation of hydrogen gas.Zn+2HClZnCl2+H2

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