1.

Assertion. In a combustion reaction in the air, oxygen is the limiting reactant. Reason. Oxygen is present in limited amount (only 21%) in the air.

Answer»

If both assertion and REASON are true, and reason is the true explanation of the assertion.
If both assertion and reason are true, but reason is not the true explanation of the assetion.
If assertion is true, but reason if false
If both assertion and reason are false.

Solution :CORRECT A. In a combustion reaction in air, the substance being brunt is the LIMITING reactant.
Correct R. Oxygen is PRESENT in large excess in the air and is the excess reactant.


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