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प्रश्न
Name the oxide of nitrogen which turns brown on exposure to air. How is it prepared?
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उत्तर
Oxide is NO (Nitric oxide).
This turns brown (NO2).
Preparation:
(i) Nitrogen and oxygen combine in the atmosphere during lightning discharge.
\[\ce{N2 + O2 <=> 2NO}\]
(ii) By oxidation of ammonia.
\[\ce{4NH3 + 5O2 ->[Pt][800^\circ C]4NO + 6H2O + Heat}\]
संबंधित प्रश्न
Name a metal nitrate which on heating is changed into metal.
Explain with the help of a balanced equation the brown ring test for nitric acid.
Name the Following:
Two coloured nitrates.
In which ratio reactants are taken in Ostwald process?
Give three equations of the reaction to prove that nitric acid is an acid.
Give reason for the following:
Commercial concentrated nitric acid is yellow in colour, but when it is dilute with water, it turns colourless.
Give one chemical test for nitric acid.
Copy and complete the following table relating to important industrial processes output refers to the product of the process not the intermediate steps.
| Name of process | Inputs | Catalyst | Equation for catalysed reaction | Output |
| Haber process | Hydrogen + | |||
|
Ammonia + |
Nitric acid |
Write a balanced equation for following :
Reaction of ammonia with nitric acid
Write the equation for the reaction of dilute nitric acid with copper.
Give a balanced equation for the following reaction:
Copper reacts with concentrated nitric acid.
