Advertisements
Advertisements
प्रश्न
Mention any two exothermic reactions.
Advertisements
उत्तर
Burning of magnesium ribbon and burning of a candle.
APPEARS IN
संबंधित प्रश्न
State the effect of an exothermic reaction on the surroundings.
Identify the endothermic and exothermic reaction.
HCl + NaOH → NaCl + H2O + heat
Why energy is involved in a chemical change?
State which type of chemical reaction proceeds with the absorption of heat energy.
Complete the statement by filling in the blank with the correct word:
The reaction of coke with steam to give water gas is an example of an __________ reaction.
Give a balanced equation for the following type of reaction:
A catalytic, reversible, exothermic reaction.
Match the following:
| Colum I | Column II | ||
| 1. | Alloying | a. | Exothermic change |
| 2. | Crystallization | b. | Periodic change |
| 3. | Soap powder + water | c. | Mixing of molten solids |
| 4. | Seasonal changes | d. | Pure solid |
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 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.
