Question

Name the following

1) Inexhaustible natural resources.

2) Remains of dead animals and plants

3) Oldest variety of coal

4) A foul smelling liquid mined from earth.

5) A combustible gas obtained by the destructive distillation of coal.

6) A fuel for heavy vehicles.

7) Residue left after the destructive distillation of coal tar.

8) Chemical used as moth repellent.

9) Alternative sources of energy (any three) Association which offers the tips to conserve

petrol & diesel.​

Answer 1

Answer:

1)Inexhaustible Natural resources – Inexhaustible resources of energy are those sources, which will not exhaust in future. These are unlimited. Bio-mass is one of the inexhaustible sources of energy. Examples – Air, water and sunlight.

Answer 2

Answer:

• water
• decomposers
• anthracite
• crude
• hydrogen
• Diesel engines
• Coke
• Naphthalene
• Petroleum Conservation Research Association (PCRA

1. Inexhaustible natural Resources Examples: Sunlight, air, etc.
2. Exhaustible natural Resources Examples: Forests, coal, petroleum
3. Sunlight is an ultimate source of energy available free of cost. It cannot be exhausted by human activities as it is produced by a natural process of fusion inside the sun. Due to this nuclear fusion extremely large amount of energy is produced which comes in the form of sunlight.