Chemistry
Zinc metal can react with which of the following options under appropriate conditions to produce hydrogen?
P — Steam
Q — Dilute acid
R — Strong alkalies
- Only P
- Q and R
- R and P
- All of these
Hydrogen
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Answer
All of these
Reason
(i) Zinc reacts with steam.
Zn + H2O ⟶ ZnO + H2
(ii) Zinc reacts with dilute acid.
Zn + 2HCl ⟶ ZnCl2 + H2
(iii) Zinc reacts with strong alkali.
Zn + 2NaOH ⟶ Na2ZnO2 + H2
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Which of the following statements about the reaction given below are correct?
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Q — Water is getting reduced.
R — Water is a reducing agent.
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