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Coal and Petroleum Science - Coal and Petroleum

CBSE - STD 8 - Science (CBSE - English Medium). 503 questions in this chapter.

Question types

Coal and Petroleum question types

503 questions across 12 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

503
Questions
12
Question groups
5
Question types
Sample Questions

Coal and Petroleum questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q. [I MARKS]1 Mark
Destructive distillation of coal is carried out by heating coal strongly to $1000^\circ C$ in the absence of air. The various useful products obtained are.
  • A
    Crude oil, kerosene, naphtha and heavy oil.
  • ✓
    Coke, coal gas, coal tar and ammonium compounds.
  • C
    Coal gas, petroleum gas and lignite.
  • D
    None of these.

Answer: B.

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Q 2M.C.Q. [I MARKS]1 Mark
Combustion that occurs suddenly with the evolution of a large amount of gas is:
  • A
    Rapid combustion
  • B
    Spontaneous combustion
  • ✓
    Explosion
  • D
    Gas combustion

Answer: C.

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Q 5M.C.Q. [I MARKS]1 Mark
A material burns into flame without the application of heat is called:
  • A
    Rapid Combustion.
  • B
    Incomplete combustion.
  • ✓
    Spontaneous combustion.
  • D
    Explosion.

Answer: C.

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Q 38questions in short. [3 marks ]3 Marks
The following Table shows the total power shortage in India from $1991–1997$. Show the data in the form of a graph. Plot shortage percentage for the years on the $Y$-axis and the year on the $X$-axis.
S.No. Year Shortage (%)
$1$ $1991$ $7.9$
$2$ $1992$ $7.8$
$3$ $1993$ $8.3$
$4$ $1994$ $7.4$
$5$ $1995$ $7.1$
$6$ $1996$ $9.2$
$7$ $1997$ $11.5$
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Q 43questions in details [4 marks ]4 Marks
The fossil fuel $P$ is formed under the earth by the decomposition of vegetable matter lying under water by the action of anaerobic bacteria. The major component of fuel $P$ is $Q$. The fossil fuel $P$ is used as a source of gas $R$ needed to manufacture nitrogenous fertilisers. When $P$ is filled in metal cylinders and used as a fuel in motor vehicles, it is called $S$. What are $P, Q, R$ and $S?$
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Q 44questions in details [4 marks ]4 Marks
The substance $W$ is a fossil fuel. It occurs deep below the ground in certain areas of the earth. Another fossil fuel $X$ is found trapped above the deposits of $W$. When $W$ is subjected to a process called $Y$, then a number of different products are collected at different temperature ranges which are put to different uses. A special grade of product $Z$ obtained in this way is used as aviation fuel in jet aeroplanes.
$a.$ What are $(i) W$, and $(ii) X ?$
$b.$ What is the physical state of $(i) W$, and $(ii) X ?$
$c.$ Name the process $Y.$
$d.$ Name the product $Z.$
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Q 53case /data -based (4 Marks)4 Marks
The picture shows how petroleum and natural gas are extracted through oil wellsImage
$7.$ Which of the following statements are supported by the picture$?$
Circle ‘Yes’ or ‘No’ for the correct response.
Is this statement supported by the picture? Yes or No
Petroleum is insoluble in water. Yes/No
Natural gas is denser than petroleum. Yes/No
Petroleum and natural gas deposits are found under rock layers. Yes/No
$8.$ Which of these conditions is required for the formation of natural gas$?$
$A.$ Low pressure
$B.$ Presence of air
$C.$ High temperature
$D.$ Presence of water
$9.$ Which of these petroleum products is used for heavy motor vehicles$?$
$A. LPG$
$B.$ Diesel
$C.$ Petrol
$D.$ Kerosene
$10.$ What is the advantage of using $CNG$ instead of petrol in light motor vehicles$?$
$A.$ It can be stored easily
$B.$ It can be extracted easily
$C.$ It causes less air pollution
$D.$ It releases more energy on combustion
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Q 54case /data -based (4 Marks)4 Marks
The table shows two groups of natural resources.
Image
$3.$ Which of these statements is true about coal?
Circle ‘Yes’ or ‘No’ for the correct response.
Is this true about coal? Yes or No
Dirt makes up a large part of coal. Yes/No
Coal is produced from plant fossils. Yes/No
Formation of coal requires heat and pressure. Yes/No
$4.$ Where is a coal reserve most likely to be found$?$
$A.$ Inside volcanoes
$B.$ Beneath glaciers
$C.$ On ocean loors
$D.$ Under land surfaces
$5.$ Which gas is mainlyemitted during the combustion of coal$?$
$6.$ Coke is a product obtained by the processing of coal.
Which of these is a by-product of making coke$?$
$A.$ Coal tar
$B.$ Bitumen
$C.$ Coal gas
$D.$ Kerosene
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Q 55case /data -based (4 Marks)4 Marks
The table shows two groups of natural resources.
Group $1$ Group $2$
Air, Sunlight, Water Coal, Petroleum, Natural gas
$1.$ How is group $1$ different from group $2?$
  Group $1$ Group $2$
$A.$ Cannot be used as energy sources Can be used as energy sources
$B.$ Will not exhaust even if used continuously Will exhaust if used continuously
$C.$ Take thousands of years to form Take millions of years to form
$D.$ Contain high percentages of carbon Contain low percentages of carbon
$2.$ Which resource in group $2$ will cause the least amount of air pollution on burning$?$
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