Assertion (A) : Always wash your hands before and after a meal. Reason (R) : It is better to prevent a disease than to find a cure for it.

Why prevention is better than cure for AIDS?

Assertion (A) : K_(p) is always greater than K_(c) . Reason (R) : The effect of pressure is greater on the rate of reaction than the effect of concentration.

Assertion(A) : Heat of vaporisation is always endothermic. Reason(R ) : Water is exithermic compound.

Assertion (A): The following intramolecular aldol reaction occurs. Reason (R ): (CHO) is a better acceptor than (C==O) .

Assertion (A): The muscular walls of ventricles are thicker than auricles. Reason (R): This helps in preventing the back flow of blood.

Assertion (A): Sn reacts with HCl to produce H_(2) gas. Reason (R ): Sn is a better reducing agent than H_(2) gas.

Assertion : Bacteria and fungi are used to make medicines. Reason : These medicines are used to cure viral diseases.