Questions

Read the following passage carefully and choose the most appropriate answer to the question out of the four alternatives.

The human eye is a complex part of the body that is used for seeing. Eyes enable people to perform daily tasks and to learn about the world that surrounds them. Sight, or vision, is a rapidly occurring process that involves continuous interaction between the eye, the nervous system, and the brain. When someone looks at an object, what he really sees is the light reflected from the object. This reflected light passes through the lens and falls on the retina of the eye. Here the light induces nerve impulses that travel through the optic nerve to the brain and then over other nerves to muscles and glands.

The eye is similar to a television camera. Both the eye and the television camera convert light energy to electrical energy. The eye converts light to nerve impulses that are interpreted by the brain as the sense perception called sight. A television camera converts light to electronic signals that are broadcast and transformed into light images in a television receiver. It is wonderful that human eyes blink an average of once every six seconds. This washes the eye with the salty secretion from the tear or lachrymal glands. Each tear gland is about the size and shape of an almond. These glands are situated behind the upper eyelid at the outer corner of the eye. After passing over the eye, the liquid from the gland is drained into the nose through the tear duct at the inner corner of the eye.

Lachrymal glands or tear glands are situated

In the following question, out of the four alternatives, choose the word which best expresses the meaning of the given word and click the button corresponding to it.

ENIGMA

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

India is the second most populous country ______ the seventh largest country by area in the world.

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

Be in force

Out of the four alternatives, choose the one which can be substituted for the given words/sentences and click the button corresponding to it.

Proposition made as a basis for reasoning without the assumption of its truth

Gaseous exchange takes place in leaves through tiny pores for the purpose of photosynthesis. What are these pores?

Which element is not a part of a nitrogenous base?

Who formulated ‘the atomic theory’ of a matter?