Questions

In the reaction H2O2 + Cl2 -----> 2HCl + O2, H2O2 acts as

An unbalanced chemical equation is called a

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

Owing to his respiratory problems the doctor has told him to refrain from smoking.

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

A place where astronomical observations are made

Select the word with the correct spelling.

Who Invented airbag?

The queen with the title Didda ruled over which part of India between 980 - 1003?

Which of the following rivers does not make an estuary?