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Solution


Q.

Assertion: Copper is used to make hot water tanks and not steel (an alloy of iron).
Reason: Copper does not react with hot water.
1 Both assertion and reason are correct and reason is the correct explanation of assertion.  
2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.  
3 Assertion is true, but reason is false.  
4 Assertion is false, but reason is true.  

Ans.

(1)

Copper is not reactive to any form of water, such as steam, neither cold water nor hot water. Hence, the copper is used to make the hot water tanks as it does not react with the water. On the other hand, due to the presence of iron in the steel, Steel is not used to make hot water tanks.