Q.

Assertion: Smoking causes oxygen deficiency in the body. 
Reason: Smoking decreases CO content in blood and reduces the concentration of haem-bound oxygen.

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a

Both assertion and reason are true but reason is not the correct explanation of assertion.

b

Both assertion and reason are true and reason is the correct explanation of assertion.

c

Both assertion and reason are false.

d

Assertion is true but reason is false. 

answer is C.

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Detailed Solution

Smoking increases CO content in blood and reduces the concentration of haem-bound oxygen.

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