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प्रश्न
What do you observe when?
Concentrated nitric acid is dropped on a hot surface?
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उत्तर
Reddish brown fumes of nitrogen dioxide are observed.
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संबंधित प्रश्न
Ammonia is used in the Ostwald process.
Why is quartz used in this process?
Name a metal nitrate which on heating is changed into metal.
Name the oxide of nitrogen which turns brown on exposure to air. How is it prepared?
Name the Following:
Salt referred to as chile saltpeter.
What do you observe when?
Scrap zinc is heated with conc. HNO3?
Complete and balance the following equation :
Fe + HNO3(conc.) → _____________
Name the product, catalyst and approximate temperature maintained in Ostwald's process. How is the temperature maintained in the Ostwald's process?
Write balanced equation for the reaction between nitrogen and oxygen, when lightning strikes.
Name the compounds required for the laboratory preparation of 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.
