Questions

Which organelle performs cellular respiration?

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

To delay or prevent someone or something by obstructing them

A sentence/a part of the sentence is underlined. Four alternatives are given to the underlined part which will improve the sentence. Choose the correct alternative and click the button corresponding to it. In case no improvement is needed, click the button corresponding to "No improvement".

Mankind does not know this

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 sister said to my mother, "When can I have dinner? I hardly have had anything to eat since noon today."

A sentence/a part of the sentence is underlined. Four alternatives are given to the underlined part which will improve the sentence. Choose the correct alternative and click the button corresponding to it. In case no improvement is needed, click the button corresponding to “No improvement”.

Both of them have not apologized yet.

In each of the questions, four alternatives are given for the Idiom/Phrase. Choose the alternative which best expresses the meaning of the Idiom/Phrase and click the button corresponding to it.

A live wire

Why does a cannon recoil after firing ?

A person does some work of 1,000 J in 2 s. His power will be ......