Questions

Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?

Which of the following is used in gunpowder?

What is the percentage of methane in biogas?

Carcinogenic chemicals cause

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech.

My colleague said, "I will start a new assignment tomorrow."

In the following questions, one part of the sentence may have an error. Find out which part of the sentence has an error and click the button corresponding to it. If the sentence is free from error, click the "No error" option.

I have come (A)/ as soon as (B)/ the customers leave your shop (C)/ No Error (D)

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

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