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
The sun appears red at sunrise and sunset while it appears white at noon, because
(A) Of refraction
(B) It is cooler at sunrise and at sunset
(C) Of diffraction leading to red end of the spectrum reaching the earth.
(D) Of Scattering of light due to dust particles and air molecules.
A lake starts freezing because of the cold atmosphere It will first freeze
(A) At the bottom
(B) ln the middle pan
(C) At the top surface
(D) Uniformly throughout the water body
The beautiful color patterns exhibited by a peacock in its tail feathers are due to
(A) Selective absorption of light
(B) Selective re ection of light
(C) Sinterference of light
(D) Natural colour pattern of feathers
When a person enters a dark room from bright light he is not able to see clearly for a little while because the
(A) Eye is unable to adjust itself immediately
(B) Retina becomes insensitive momentarily
(C) Iris is unable to dilate the pupil immediately
(D) Distance between the lens and retina take time to adjust