Advertisements
Advertisements
प्रश्न
State which type of chemical reaction proceeds with evolution of heat energy.
Advertisements
उत्तर
Exothermic reactions
APPEARS IN
संबंधित प्रश्न
Define endothermic reactions. Give two examples of each.
FILL IN THE BLANK
In a................ reaction heat energy is absorbed.
Complete the following statement.
On heating, hydrated copper sulphate changes its colour from ________ to __________.
Define exothermic and endothermic changes. Give two example in each case.
Explain the term energy changes in a chemical change or reaction.
Give an example with a balanced equation, of the following reaction:
exothermic reaction
Respiration is a ______ change.
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 added slowly 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.
