Name the green house gases that contribute to global warming.

These questions consist of two statement each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is a correct explanation of the Assertion. B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion: Methane component of green house gases contributing to global warming is about 20%. Reason. Introduction of multipoint fule injection engines in automobiles has decreased methane content in exhausts.

Which one of the followig green house gases contributes about 20% of global warming?

Write a note on global warming.

What is global warming?

Name two main greenhouse gases.

Explain global warming.

Write the main cause of global warming.

Name the various noble gases.