CBSE Class 8 Science Coal and Petroleum Assignment Set B

Question. Which of the following is used for refining of petroleum ?
(A) Steam distillation
(B) Distillation under reduced pressure
(C) Solvent extraction
(D) Fractional distillation

Answer: D

Question. The monomer units of neoprene ar known as
(A) isoprene
(B) chloroprene
(C) vinyl chloride
(D) ethylene glycol.

Answer: B

Question. Main constituents of coal gas are :
(A) H₂O, C₂H₆ , O₂
(B) CH₄ , CO₂ , O₂
(C) CH₄ , H₂ , CO
(D) C₂H₆ , N₂ , O₂

Answer: C

Question. Which one of the following polymers is not properly matched to its monomer ?
(A) Orlon – Acrylonirtile
(B) Synthetic rubber – 2 – Chlorobuta – 1, 3 – diene.
(C) Nylon – Adipic acid & Hexamethylene diamine
(D) Teflon – Vinyl chloride

Answer: D

Question. The distillation of crude petroleum to obtain various commercially useful fraction is called :
(A) cracking
(B) hydroforming
(C) refining
(D) mining

Answer: C

Question. Percentage of carbon present in an air dried sample of Anthracite is :
(A) 94 – 98%
(B) 27 – 30%
(C) 78 – 86%
(D) 27 %

Answer: D

Question. Which one of the following is a condensation polymer?
(A) Polyethene
(B) Polyester
(C) Polystyrene
(D) Polypropylene

Answer: B

Question. Which of the following products obtained by destructive distillation of coal, is not properly matched ?
(A) Coal tar – Dyes, explosives, paints
(B) Coal gas – Fuel
(C) Coke – Drinking purposes
(D) Ammoniacal liquor – Fertilizers

Answer: C

Question. Which of the following is known as regenerated fibre ?
(A) Nylon – 66
(B) Terylene
(C) Nylon – 6
(D) Rayon

Answer: D

Question. Kerosene oil is a mixture of hydrocarbons containing number of carbon atoms -
(A) C₆ to C₁₀
(B) C₈ to C₁₂
(C) C₁₁ to C₁₆
(D) C₁₈ to C₂₂

Answer: C

Question. Ammoniacal liquor is -
(A) ammonia absorbed in water
(B) ammonium hydroxide
(C) aqueous solution of ammonia
(D) All of the above

Answer: A

Question. The structure of isoprene is -
(A) CH₂ = C(C₂H₅) – CH = CH₂
(B) CH₂ = C(OCOCH) – CH = CH₂
(C) CH₂ = C(CH₃) – CH = CH₂
(D) CH₂= CH – C ≡ CH

Answer: C

Question. All are natural fibres except -
(A) silk
(B) cotton
(C) nylon
(D) wool

Answer: C

Question. The first man – made polymer is -
(A) PVC
(B) Teflon
(C) Bakelite
(D) Nylon

Answer: D

Question. Which of the following is properly matched ?
(A) Kerosene – C₅ – C₁₀
(B) Diesel oil – C₅ – C₆
(C) Petrol – C₇– C₉
(D) All are correct

Answer: C

Question. The following are synthetic polymers except -
(A) teflon
(B) terylene
(C) nylon
(D) proteins

Answer: D

Question. Pick out the incorrect statement amongst the following :
(A) Nylon clothings can with stand high temperature & are therefore, good to wear in summers.
(B) Thermosetting plastics do not become soft on heating.
(C) Addition polymers are formed without the elimination of by- product molecules.
(D) Natural rubber is obtained as latex from rubber trees.

Answer: A

Question. Which of the following names represents the foul smelling, black, thick, viscous liquid obtained from destructive distillation of coal ?
(A) Coke
(B) Coal tar
(C) Coal gas
(D) None of these

Answer: B

Question. Which one of the following is not a petroleum product ?
(A) Kerosene
(B) Gasoline
(C) Pitch black
(D) Bees wax

Answer: D

Question. Which of the following is a thermosetting plastic ?
(A) PVC
(B) Polyethylene
(C) Bakelite
(D) Terylene

Answer: C

1.Which organization is associated to advise people how to save petrol and diesel?

2.Liquefied Petroleum Gas is:
(A) A mixture of butane, ethane and propane gases.
(B) Obtained as a by-product during refining of petroleum.
(C) Liquefied under high pressure so that it can be stored and transported in cylinders.
(D) All of these.

3.What are the natural recourses?

4.Which natural resource is also called 'Black Gold'?
(A) Coal.
(B) Natural gas.
(C) Petroleum.
(D) Coal tar.

5.The gas which is known as marsh gas and has the molecular formula CH4 is:
(A) Ethane.
(B) Methane.
(C) Propane.
(D) Butane.

6.The process of separating the various constituents of petroleum is called:
(A) Ionization.
(B) Carbonization.
(C) Refining.
(D) Lubrication.

7.The substances obtained from petroleum and natural gas are termed as:
(A) Chemicals.
(B) Petrochemicals..
(C) Fuels.
(D) Fossil fuels.

8.Which petrochemical is used for making ointments and Vaseline?
(A) Bitumen.
(B) Lubricating oil.
(C) Paraffin wax.
(D) Diesel.

9.Which one is the man-made resource?
(A) Air.
(B) Water.
(C) Solar Energy.
(D) None of these.

10.Exhaustible natural resources are-
(A) Coal.
(B) Petroleum.
(C) Natural gas.
(D) a, b and c.

11.Which one is the natural resource?
(A) Wood.
(B) Cow dung cake.
(C) a and b. (D) Air.

12.Which fuel was used in railway engines to produce steam to run the engine?
(A) Coal.
(B) Coke.
(C) Coal gas.
(D) Coal tar.

13.Fuels can be classified as:
(A) Combustible, Non-combustible.
(B) Solid, Liquid or Gaseous.
(C) Efficient or Non-efficient.
(D) All of these.

14.Wood is becoming more and more scarce and expansive because of:
(A) Extensive use in housing and activities.
(B) Large scale felling of trees.
(C) Increased use as a fuel.
(D) both (a) and (b).

15.Coal is a fossil fuel has been formed by:
(A) The slow compression of plant bodies of large forests that existed 300 millions years ago.
(B) Plant bodies got buried under the surface of earth and gradually covered with many layers of soil. The heat and high pressure ultimately converted them into coal.
(C) Both (a) and (b).
(D) The living organisms present in the soil.

16.Heating of coal in absence of air results in the formation of:
(A) Hydrogen Sulphide and Marsh gas.
(B) Coke, coal gas and coal tar.
(C) Oxides of Carbon.
(D) Large amount of energy.

17.The fuel formed from the dead remains of microscopic marine plants and animals settled in muddy sediments at the bottom of sea millions of years ago is
(A) Coke.
(B) Petroleum.
(C) Marsh gas.
(D) All of these.

18.Petroleum is a dark oily liquid with unpleasant smell that does not burn, but still called a fuel:
(A) Because it is made from dead remains of marine plants.
(B) Because it is insoluble in water and floats on it.
(C) Because it is refined to get different constituents with excellent calorific values.
(D) Because of its colour and appearance.

19.Natural gas, found with petroleum in oil wells is:
(A) Mainly methane - a hydrocarbon.
(B) Compressed to form CNG.
(C) Capable of burning easily to produce heat.
(D) All of these.

20.Solar energy, wind energy and hydroelectric energy are the examples of:
(A) Non-renewable energy.
(B) Renewable energy.
(C) Conventional energy.
(D) Fossils.

21.Natural phenomenon utilising the sun energy are:
(A) Blowing of winds.
(B) Rains and Snow.
(C) Photosynthesis.
(D) All of these.

22.Biogas plants are considered environment-friendly because:
(A) They use animal dung, human excreta and agricultural wastes as raw materials.
(B) Their design does not allow the raw material to come in contact with oxygen.
(C) Mixture of gases obtained is a good fuel for cooking and the residue is a good manure.
(D) All of these.

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