1.Given below are two statements, labeled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : Air passengers sometimes feel pain in the ears when the plane rapidly loses height.Reason (R) : Atmospheric pressure is larger at lower altitudes.

2.Athletes normally have larger sized hearts because

3.Who first established the fact that the earth revolves round the sun ?

4.Which of the following vitamins is considered to be a hormone ?

5.Given below are two statements, labeled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : The process of nuclear fusion produces more energy than nuclear fission.Reason (R) : Nuclear fission is an exothermic process.