Advertisements
Advertisements
प्रश्न
State the following reaction whether heat is evolved or absorbed –
Two neutral gases combine to give a basic gas.
Advertisements
उत्तर
Nitrogen gas and hydrogen gas give NH3 (ammonia a basic gas).
APPEARS IN
संबंधित प्रश्न
Define endothermic reactions. Give two examples of each.
Explain the term with examples.
Endothermic reaction
Give an example of the following chemical changes.
A photochemical reaction involving silver salt.
Name a nitrate which produces oxygen as the only gas.
State which type of chemical reaction proceeds with evolution of heat energy.
Chemical reactions may proceed with evolution of heat. Give an example.
Supply of energy may be required to initiate a reaction. State the different forms with a suitable example of reactions initiated by the supply of energy.
Give scientific reasons.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
Give scientific reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is slowly added to water with constant stirring.
Give a scientific reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
