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प्रश्न
What is meant by the following term ?
Decrepitation
उत्तर
Decrepitation:
It is the breaking of a substance usualIy accompanied by the emission of a crackling sound. An example for a substance which decrepitates on heating is Iead nitrate Pb(NO3)2.
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संबंधित प्रश्न
Explain the following:
An all-glass apparatus is used in the laboratory preparation of nitric acid.
What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of Nitric acid?
Name a metal nitrate which on heating is changed into metal.
Complete and balance the following equation :
Pt + HNO3 + HCl → ___________
Give reason for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitatre should not be heated very strongly, above 200°C
Name (formula is not acceptable) the gas produced in the following reaction:
On warming ammonium sulphate with sodium hydroxide solution.
The first step in the manufacture of nitric acid is the catalytic oxidation of ammonia. What is the name of the catalyst?
What would you observe in the following case:
Copper is heated with concentrated nitric acid in a hard glass test tube.
What is the property of nitric acid which allows it to react with copper?
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.
