36.When used for benign purposes, this is lnown simply as fertiliser. But when mixed with diesel fuel and set off, if has a detonation velocity of 1,100 m per sec. The powerful tool of destruction referred to above is

37.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 metallic objects are touched in winter, they give a colder sensation as compared to wooden objects.Reason (R) : Metals conduct heat faster than wood.

38.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 addition or use of ozone kills micro-organisms in water.Reason (R) : Ozone is radioactive.

39.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) : Vaccines must be given to children. 2. Reason (R) : Vaccines prevent diseases.

40.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) : Cells are the basic units of life. 2. Reason (R) : Cells are the smallest parts of a living organism that can lead to an independent existence.