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प्रश्न
What is the role of a catalyst in a chemical reaction?
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उत्तर
Substances used to alter the speed of a chemical reaction, are called catalysts. For example, metallic iron is used as a catalyst in the manufacture of ammonia by Haber’s process.
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संबंधित प्रश्न
Explain the type of reactions on the basis of the direction of reaction.
Fill in the blank:
The basic conditions necessary for a chemical reaction is _______
Write true or false :
Hydrogen sulphide has rotten egg smell .
Give an example of a reaction where the following are involved:
Solution
Give an example of the following chemical changes.
A reaction where colour change is noticed.
Give a chemical test to distinguish between the following gases.
SO2 and Cl2
Write your observation and a balanced equation in the case of the following substances being heated.
Copper carbonate.
Give reason for the following:
Electrolytic decomposition of water is a reaction involving change of state.
Select the correct answer from the options given below:
State the gaseous product formed, when
An active metal reacts with dilute sulphuric acid.
______ occurs in the absence of air and in the presence of micro-organisms such as yeast.
