Name the black residue left behind in the glass tube during destructive distillation of coal.
Coke.
Match the following option:
| A. L.P.G. | (i) fuel in lamps |
| B. Petrol | (ii) fuel at home for cooking |
| C. Kerosene | (iii) fuel for light vehicles |
| D. Kerosene | (iv) used in ointments and vaseline |
| E. Paraffin wax | (v) fuel for heavy vehicles |
What is used as fuel in heavy vehicles?
Match the following option:
| A. Bitumen | (i) obtaining by-products of petroleum |
| B. Carbonization | (ii) used in road construction |
| C. Fractional Distillation | (iii) burning of coal in absence of air |
| D. Fractional Distillation | (iv) all fossil fuels |
| E. Exhaustible natural resources | (v) coal, petroleum, natural gas |
Name two each of the exhaustible and inexhaustible natural resources.
