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Solution


Q.

Assertion: Tungsten is used for filament of electric bulb.
Reason: It has high melting point.
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)

Tungsten is used for filament of electric bulb because it has high melting point and high resistance. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion.