Carbon and its Compounds — Science STD 10 — Question

When light is dim, the pupil becomes _____.

The male organ of reproduction in the flower is the ________.

Fill in the blanks in the following sentence:
Two chlorine atoms combine to form a molecule. The bond between them is known as ________.

Fill in the following blanks:
Plant shoot grows upward in response to __________.

Ethene and ethyne are examples of _________ hydrocarbons.

Splitting of a heavy nucleus into two lighter nuclei is called __________.

Fill in the following blanks with suitable words:
Pollen grains contain ___________ gametes of a plant.

Short-sighted person cannot see _____ objects clearly. Short-sightedness can be corrected by using _____ lenses.

Fill in the following blank with a suitable word:
When light is reflected, the angles of incidence and reflection are _____.

We can see the sun about _____ minutes before the actual sunrise and about ______ minutes after the actual sunset because of atmospheric _____.