Question

The yellow colour often shown by nitric acid may be removed by

Solution

Correct option is

Bubbling the air through the warm acid

Dissolved oxides of nitrogen are removed.  

SIMILAR QUESTIONS

Q1

Of the following acids of sulphur which one has more than one oxidation state of sulphur atom?

Q2

Of the following which compound is most unstable?

Q3

 

An aqueous solution of a gas shows following reactions:  

(i) It turns red litmus blue

(ii) When added in excess to a copper sulphate solution a deep blue colour is obtained.

(iii) On addition to ferric chloride solution a brownish precipitate soluble in HNO3 is obtained.       

Identify the gas.

Q4

Ammonium dichromate on heating gives

Q5

 

White silver surface turns black when O3 is passed over it.   

This is due to the formation of

Q6

Reaction that involves atmospheric oxygen are never promoted by

Q7

What is the name of the compound containing N, H and O, which on heating give laughing gas?

Q8

Which one of the following is best oxidizing agent? 

Q9

Which one of the following is pseudohalide?

Q10

Mn++ can be converted into Mn+7 by reacting with