Coal and Petroleum Worksheet-5

Coal and Petroleum Worksheet-5

1. When sand is poured over some burning material, the fire goes off. It is because:

(a) the ignition temperature is brought down by sand

(b) supply of air is cut off

(c) sand is a bad conductor of heat

(d) all of these

2. The three essential requirements for producing a fire:

(a) fuel               (b) air                 (c) heat               (d) all of these

3. Petroleum is:

(a) lighter than water and soluble in it

(b) heavier than water and insoluble in it

(c) lighter than water and insoluble in it

(d) heavier than water and soluble in it

4. The residue left behind after the dry distillation of coal :

(a) coal tar        (b) coal gas       (c) coke              (d) ammonical liquor

5. Which of the following property is not a characteristic of a good fuel?

(a) High ignition temperature

(b) Low cost

(c) Causes minimum pollution

(d) Readily available

6. Producer gas is not a good fuel because:

(a) it contains CO which is poisonous

(b) it contains CO₂

(c) it contains CO₂ which does not burn

(d) it contains N₂ which does not burn

7. Plants store solar energy in the form of:

(a) electric energy                        (b) thermal energy

(c) chemical energy                     (d) bio energy

8. Biogas is a mixture of:

(a) methane + CO₂                       (b) methane + CO

(c) ethane + CO₂                           (d) ethane + CO

9. Water gas is a mixture of:

(a) H₂ and N₂                                 (b) H₂ and CO₂

(c) CO₂ and N₂                              (d) CO and H₂

10. An aerobic fermentation is a process which helps in formation of:

(a) Coal gas                                    (b) Natural gas

(c) Water gas                                 (d) Petroleum

Answer Key:

(1)-(b); (2)-(d); (3)-(c); (4)-(c); (5)-(a); (6)-(d); (7)-(c); (8)-(a); (9)-(d); (10)-(b)