The given figure shows the petroleum deposit inside the earth’s crust.
Which of the following is correct with respect to substance X?
I. X is chiefly made up of methane.
II. X is stored under low pressure.
III. X is a clean, non-polluting fuel.
A I and III
B II and III
C I and II
D None of these
In fractionating column, various fractions are obtained at various heights of the column. As the vapours reach at a height where temperature is equal to or just below the boiling point of that fraction, it will
A Condense to form a liquid
B Remain in gaseous state
C Condense to form a solid
D Escape from the column.
Which of the following statements are correct?
(I) Coal, petroleum and natural gas are called fossil fuels.
(II) Coal and natural gas are exhaustible substances.
(III) CNG is more polluting than petrol.
(IV) Coke is used in the manufacture of steel.
A I and II only
B II and IV only
C I, III and IV only
D I, II and IV only
Different components of petroleum are separated by fractional distillation. What is the correct sequence of fractions obtained in the fractionating column from top to bottom?
A Petroleum gas, lubricating oil, kerosene, gasoline.
B Kerosene, petroleum gas, lubricating oil, gasoline.
C Petroleum gas, gasoline, kerosene, lubricating oil.
D Gasoline, kerosene, petroleum gas, lubricating oil.
Observe the figure of destructive distillation of coal. What are the three fractions X, Y and Z?
|A||Coal gas||Coal tar||Coke|
|C||Coal gas||Coal tar||Impure coal|
|D||Carbon dioxide||Coal tar||Coal|