Short_sightedness can be corrected by using ___________
(A) Convex lens
(B) Concave lens
(C) Convex-concave lens
(D) Concave-convex lens
Which of the following diseases is caused by virus
(A) Small pox
(B) Tuberculosis
(C) Malaria
(D) Cholera
A person with which of the following blood groups can receive blood of any group
(A) A
(B) AB
(C) B
(D) O
Which of the following vitamins promote healthy functioning of eyes in human beings
(A) Vitamin B
(B) Vitamin C
(C) Vitamin A
(D) Vitamin D