S1: Then what is necessary with regard to taming science and technology is: P: We must have the basic knowledge of the two. Q: It is said, ‘Science is a useful servant but destructive master’. R: By the misuse of science, mankind will meet its doom quite soon. S: If we do not harness it for the welfare of mankind, I am afraid, a total annihilation is a must. S6: Then why do we not tame atomic energy to peaceful purposes? Find the correct sequence of P, Q, R and S.