6.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 ? 1. Assertion (A) : Ozone hole poses serious health hazards for life on the earth. 2. Reason (R) : The CFCs destroy the ozone layer.

7.Which of the following non-leguminous plants can fix atmospheric nitrogen ? 1. Tomato 2. Alnus 3. Ginkgo

8.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) : When a body is dipped in a liquid fully or partially, there is a decrease in its weight.Reason (R) : The decrease in weight is due to the higher density of the displaced liquid.

9.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) : Carbon is found in a large number of compounds in nature.Reason (R) : Carbon has the unique property of combining and exchanging ions with other elements to from various compounds.

10.Given below are two statements, labelled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : Unlike photographic film which can be used only once, video tapes canbe reused several times.Reason (R) : Photography involves chemical change, but video recording is a physical change