What is the fixation of Nitrogen?

One Line Answer

The conversion of free atmospheric nitrogen into useful nitrogenous compounds in the soil is known as the fixation of atmospheric nitrogen.

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Chapter 10 Study of Compounds C. Nitric Acid
lntext Questions | Q 1. (c) | Page 168

Fill in the blanks using the appropriate words given below :

(Sulphur dioxide, nitrogen dioxide, Nitric oxide, Sulphuric acid)

Cold, dilute nitric acid reacts with copper to give ___________.

Name the gas that is produced in the given cases :

Sulphur is oxidized by concentrated nitric acid.

What is aqua fortis?

What is : aqua regia

Write a balanced chemical equation for the laboratory preparation of nitric acid.
In the preparation of nitric acid from KNO₃, concentrated hydrochloric acid is not used in place of concentrated sulphuric acid. Explain why?
Conc. nitric acid prepared in the laboratory is yellow in colour. Why? How is this colour removed?
Give reasons for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitrate should not be heated very strongly above 200°C.

Conc. Nitric acid prepared in laboratory is yellow in colour why? How is this colour removed?

Write a balanced equation and name the products formed when sodium hydrogen carbonate is added to nitric acid.

Identify the substance underlined:
The dilute acid which is an oxidizing agent.

Write the balanced equation for the following:
Action of heat on AgNO₃

Write equation to show the reaction between the following:
Copper and concentrated nitric acid.