Questions

Meteorology is a branch of science that deals with the study of the atmosphere that focuses on weather processes and forecasting.

AIDS: The term means Acquired Immunity Deficiency Synodrome. The virus attacks the T cells of the (white corpuscle type) blood and destroys them.

In the atom bomb, isotopes of uranium are  disintegrated with the release of a large amount of energy. Hence, the process is nuclear fission.

Every line has an upper limit and a lower limit on the frequency of signals it can carry. This limited range is called the bandwidth

In the above given sentences, only option C) The hen has laid 10 eggs is gramatically correct.

A) Not correct - We had gone to the party last night

Correct - We went to the party last night

B) Not correct - I have seen him yesterday

Correct - I saw him yesterday (We do not use the present perfect tense with past time expressions.)

D) Not correct - She is sleeping for 2 hours

Correct - She has been sleeping for two hours. (We use the present perfect continuous tense to show duration.)

Honshu is the largest of the four main islands and is approximately equal in area to United Kingdom. Tokyo is one of the five largest cities of the world.

In making jewels, gold is usually mixed with copper to make it little hard.