Define destructive distillation of coal. Write the names and one use of each
of
i. Hard and porous substance
ii. A black coloured liquid obtained by destructive distillation of coal.
Answers
Answer:
Destructive distillation is a chemical process in which decomposition of unprocessed material is achieved by heating it to a high temperature; the term generally applies to processing of organic
Explanation:
coke
ammonia's liquor
Answer
Introduction
We use various materials for our basic needs. Some of them are found in nature and some have been made by human efforts.
Natural resources
Definition
The sources which are obtained from nature are called natural resources.
Types of natural resources
1. Inexhaustible natural resources
These sources are present in unlimited quantity in nature and are not likely to be exhausted by human activities.
Examples: Sunlight, air, etc.
2. Exhaustible natural resources
The amount of these resources in nature is limited, they can be exhausted by human activities.
Examples: Forests, coal, petroleum. minerals, wild life, natural gas, etc.