Assertion : Methane component of green house gases contributing to global warming is about 20 percent.Reason : Introduction of multi-point fuel inject - Biology MCQ Biology | ExamTest.live

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Assertion : Methane component of green house gases contributing to global warming is about 20 percent.Reason : Introduction of multi-point fuel injection engines in automobiles has decreased methane content in the exhausts.

A $(a) Both Assertion & Reason are true and the reason is the correct explanation of the assertion$
B $(b) Both Assertion & Reason are true but the reason is not the correct explanation of the assertion$
C $(c) Assertion is true statement but Reason is false$
D $(d) Both Assertion and Reason are false statements$

Solution & Step-by-step Explanation

Methane (CH_{4}) contributes approximately 20% to the greenhouse effect that leads to global warming. While advanced engine technologies like multi-point fuel injection (MPFI) can improve fuel efficiency and reduce unburnt hydrocarbons (including methane) in emissions, this is not the explanation for methane's specific percentage contribution to global warming. Both statements are true, but the reason does not explain the assertion.

Try it yourself before checking the explanation above.

Assertion : Methane component of green house gases contributing to global warming is about 20 percent.Reason : Introduction of multi-point fuel injection engines in automobiles has decreased methane content in the exhausts.

(a) Both Assertion & Reason are true and the reason is the correct explanation of the assertion

(b) Both Assertion & Reason are true but the reason is not the correct explanation of the assertion

(c) Assertion is true statement but Reason is false

(d) Both Assertion and Reason are false statements

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