Question
Given below are two statements, one is labelled as
Assertion A and other is labelled as Reason R Assertion A: The temperature increases with increasing height in the stratosphere. Reason R: Ozone absorbs ultra violet radiation in the stratosphere and makes it warm. In light of the above statements, choose the correct answer from the options given belowSolution
Both A and R are true and R is the correct explanation of A Ozone layer is found in the stratosphere at the height of 20 km and is responsible for trapping the heat energy.Â
Spirit in contact with body gives cool sensation because it is:
The major component in the LPG isÂ
When water itself combines chemically with some element or mineral it is calledÂ
Conduction band electrons have more mobility than holes because they
The element used for making solar cells is
Which one of the following is known as the brown coal?
Which mineral is the ore Of aluminium?
The chief source of naphthalene isÂ
The total energy of revolving electron in an atomÂ
KMN04 can be used as a/an