Advertisements
Advertisements
प्रश्न
Give a reason why a catalyst is used in certain chemical reactions.
Advertisements
उत्तर
A catalyst is used to make the reaction fast or slow down it. When KClO3 is heated, oxygen is produced but the reaction is very slow. If we add MnO2 to KClO3 and heat the rate of production of oxygen becomes faster.
APPEARS IN
संबंधित प्रश्न
Fill in the blank .
Soluble bases are called ............
What do you observe when Lead nitrate is heated.
Give two examples Basic oxide .
A chemical reaction may be ‘reversible’ in nature. State the meaning of the term in italics.
Give a balanced equation for the formation of the following oxide –
Sulphur dioxide from a non-metal
Give a balanced equation for the formation of the following oxide –
Zinc oxide from a metal
Give the example of the acidic oxide, basic oxide, amphoteric oxide and neutral oxide. State which of the oxide react with water to give a base.
Give the example of the acidic oxide, basic oxide, amphoteric oxide and neutral oxide. State which of the oxide react with a base to give salt and water.
Give one example of –
A peroxide
Select the correct answer for the statement given below:
The neutral gas obtained on thermal decomposition of potassium nitrate.
