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प्रश्न
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.
उत्तर
Potassium nitrate
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संबंधित प्रश्न
Explain with the help of a balanced equation, the brown ring test for nitric acid.
The action of heat on the blue crystalline solid X gives a reddish brown gas Y, a gas which re-lights a glowing splint and leaves a black residue. When gas Z, which has a rotten egg smell, is passed through a solution of X, a black ppt. is formed.
- Identify X, Y and Z.
- Write the equation for action of heat on X.
- Write the equation between solution X and gas Z.
Name the Following:
Salt referred to as chile saltpeter.
Give reason for the following:
Lighting is a blessing in disguise.
What do you observe when?
Conc. HNO3 drops on the skin of a person?
What do you observe when?
Scrap zinc is heated with conc. HNO3?
Choose the correct answer from the option given below :
Concentrated nitric acid oxidises phosphorus to :
Dilute nitric acid is generally considered to be a typical acid except for its reaction with metals. In what way is dilute nitric acid different from other acids when it reacts with metals?
Explain the following:
Concentrated nitric acid appears yellow when it is left standing in a glass bottle.
Explain why nitric acid is kept in a reagent bottle for a long time.
