Reason out:1. Speed of the certain reaction is influenced by the catal

1.	Reason out:1. Speed of the certain reaction is influenced by the catalyst.2. Chlorine is produced by Brine.3. Ozone is produced naturally in the stratosphere.4. Photolysis occurs in the atmosphere.
Answer» 1. Reason : Some chemical substances are used to alter the speed of a chemical reaction. Example : metallic iron is used as a catalyst in the manufacture of ammonia. 2. Reason : Brine is electrolysed to produce chlorine and hydrogen gases along with sodium hydroxide. Such reactions are called as electrolysis. 3. Reason : Most of the earth’s ozone is contained in the stratosphere, a layer of the atmosphere 10 – 40 km above the surface of the earth. 4. Reason : The UV rays from the sun break ozone (O₃ molecules in the stratosphere into oxygen and atomic oxygen.

Reason out:1. Speed of the certain reaction is influenced by the catalyst.2. Chlorine is produced by Brine.3. Ozone is produced naturally in the stratosphere.4. Photolysis occurs in the atmosphere.

Answer»

1. Reason : Some chemical substances are used to alter the speed of a chemical reaction. Example : metallic iron is used as a catalyst in the manufacture of ammonia.

2. Reason : Brine is electrolysed to produce chlorine and hydrogen gases along with sodium hydroxide. Such reactions are called as electrolysis.

3. Reason : Most of the earth’s ozone is contained in the stratosphere, a layer of the atmosphere 10 – 40 km above the surface of the earth.

4. Reason : The UV rays from the sun break ozone (O₃ molecules in the stratosphere into oxygen and atomic oxygen.

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