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प्रश्न
Why does pure nitric acid take on a yellowish brown colour when exposed to light?
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उत्तर
Yellowish brown colour of nitric acid is due to the presence of nitrogen dioxide formed due to thermal decomposition of nitric acid.
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संबंधित प्रश्न
How will you prepare the following from nitric acid?
Aqua regia
Name the oxide of nitrogen which turns brown on exposure to air. How is it prepared?
Mention three important uses of nitric acid. Give the property of nitric acid involved in the use.
Name the Following:
Salt referred to as chile saltpeter.
Name the catalyst used in Ostwald process.
Give reason for the following:
Conc. Nitric acid renders iron passive.
Complete and balance the following equation :
Fe + HNO3(conc.) → _____________
Give two chemical tests to distinguish between dilute nitric acid and hydrochloric acid.
Write a balanced equation for following :
Reaction of ammonia with nitric acid
From the following list of substances, choose one substance in the case which matches the description given below:
Ammonium nitrate, calcium hydrogen carbonate, copper carbonate, lead nitrate, potassium nitrate, sodium carbonate, sodium hydrogen carbonate, zinc carbonate.
A Substance that gives off only oxygen when heated.
