125876 + Interview Questions in General QA

1.	……….. use wind energy to produce current. A) Panels B) Wind guage C) Wind mill D) None of these
Answer» Correct option is C) Wind mill

Discussion

2.	Liquid gold is A) Petrol B) Coal C) Petroleum D) Kerosene
Answer» Correct option is C) Petroleum

Discussion

3.	Purest form of carbon is called A) coal B) charcoal C) lamp black D) coke
Answer» Correct option is D) coke

Discussion

4.	………. gas obtained during the processing of coal to get coke. A) Coal B) LPG C) CNG D) None of these
Answer» Correct option is A) Coal

Discussion

5.	Coal is processed in industries to get some useful products. Which of the following is not obtained from coal? (a) coke (c) coal gas (b) coal tar (d) CNG
Answer» The Right option is : (d) CNG

Discussion

6.	Name three useful products of coal.
Answer» The three useful products of coal are following: Coke: It is a tough, porous and black substance. It is almost pure form of carbon. Coal tar: It is a mixture of about 200 substances. It is a black, thick liquid with unpleasant smell. Coal gas: It is obtained during the processing of coal to get coke.

6.

Name three useful products of coal.

Answer»

The three useful products of coal are following:

Coke: It is a tough, porous and black substance. It is almost pure form of carbon.

Coal tar: It is a mixture of about 200 substances. It is a black, thick liquid with unpleasant smell.

Coal gas: It is obtained during the processing of coal to get coke.

Discussion

7.	Classification of natural resources.
Answer» Natural resources can be classified into exhaustible and inexhaustible resources.

Discussion

8.	What is meant by natural resources?
Answer» Natural resources: The resources obtained from nature are called natural resources.

Discussion

9.	You are given the following substances with their boiling and melting points.SubstanceBoiling point(°C)Melting point (°C)A-183-219B445119C78-15Point out the physical states of A, B and C at room temperature (30°C). A. A-Gas, B-Solid, C-Liquid B. A-Gas, B-Liquid, C-Solid C. A-Liquid, B-Solid, C-Gas D. A-Solid, B-Liquid, C-Gas
Answer» A is gas, B is solid and C is liquid.

Discussion

10.	The melting point of ice is 273.16 K. What does this mean? Explain in detail.
Answer» The melting point is defined as the temperature at which a solid melts to become a liquid at the atmospheric pressure. The melting point of ice is 273.16K. This means that at 273.16K temperature, the ice melts and starts converting to liquid water.

Discussion

11.	Define boiling point, melting point and evaporation ?
Answer» Boiling Point : The temperature at which a liquid boils to form vapours at atmospheric pressure is called its boiling point. Boiling point of water is 373 K (100º C + 273 = 373 K). Melting Point : The temperature at which a solid melts to form liquid at atmospheric pressure is called its melting point. Melting point of ice is 273.16 K (0º C). Evaporation : A surface phenomenon in which liquid changes into vapours at any temperature below its boiling point is called evaporation. Particles on the surface of a liquid have higher kinetic energy than others, so they break. The forces of attraction between the particles & escape from the surface of liquid in the form of vapours.

11.

Define boiling point, melting point and evaporation ?

Answer»

Boiling Point : The temperature at which a liquid boils to form vapours at atmospheric pressure is called its boiling point. Boiling point of water is 373 K (100º C + 273 = 373 K).

Melting Point : The temperature at which a solid melts to form liquid at atmospheric pressure is called its melting point. Melting point of ice is 273.16 K (0º C).

Evaporation : A surface phenomenon in which liquid changes into vapours at any temperature below its boiling point is called evaporation. Particles on the surface of a liquid have higher kinetic energy than others, so they break. The forces of attraction between the particles & escape from the surface of liquid in the form of vapours.

Discussion

12.	These microbes, which were produced petroleum are appreciable A) Plankton B) Dengue C) Sea animals D) Starfish
Answer» Correct option is A) Plankton

Discussion

13.	Given figure is an example for ………. type of energy resource.A) natural B) renewable C) non-renewable D) both A and B
Answer» Correct option is D) both A and B

Discussion

14.	This experiment shows A) Burning of coal gas B) Burning of petrol C) Burning of coke gas D) None
Answer» Correct option is A) Burning of coal gas

Discussion

15.	List the name of products of coal.
Answer» Coke, coal tar, and coal gas are the products of coal.

Discussion

16.	Short note on Michael Faraday.
Answer» Michael Faraday (1791 – 1867): He was an English scientist who contributed to the fields of electromagnetism and electrochemistry. His discoveries include those ûf electromagnetic induction, diamagnetism, and electrolysis. As a chemist, Faraday discovered benzene, investigated the clathrate hydrate of chlorine, invented an early form of a bunsen burner

16.

Short note on Michael Faraday.

Answer»

Michael Faraday (1791 – 1867):

He was an English scientist who contributed to the fields of electromagnetism and electrochemistry.
His discoveries include those ûf electromagnetic induction, diamagnetism, and electrolysis.
As a chemist, Faraday discovered benzene, investigated the clathrate hydrate of chlorine, invented an early form of a bunsen burner

Discussion

17.	………… is exhaustible fuel among the fuels given below.A) Solar energy B) Wind energy C) Coal D) Tidal energy
Answer» Correct option is C) Coal

Discussion

18.	Coal is used to manufacture A) Napthalene B) Paints C) Kerosene D) Both A and B
Answer» Correct option is D) Both A and B

Discussion

19.	……….. is used for lighting. A) Coal B) Coke C) Coal tar D) Coal gas
Answer» Correct option is D) Coal gas

Discussion

20.	Out of the following, an example of matter which can be termed as fluid is: (a) Carbon (b) Sulphur (c) Oxygen (d) Phosphorus
Answer» The correct answer is: (d) Robert Brown

Discussion

21.	Write the short note on Rigid and Fluid.
Answer» ➢ Rigid means ‘unbending’ or ‘inflexible’. A stone is rigid because it is unbending or inflexible. Fluid means ‘a material which can flow easily’ and requires a vessel (or container) to keep it. ➢ A solid is a rigid form of matter. Due to their rigidity, solids have a tendency to maintain their shape when subjected to outside force. Thus, the main identifying characteristic of solids is their rigidity. Solids do not require a container to keep them. A brick and a log of wood are two common solids. ➢ A liquid is a fluid form of matter which occupies the lower part of the container. Being fluids, liquids require a container to keep them. A liquid has a well-defined surface, so a liquid can be kept in an open container. The liquid will not escape from the open container by itself. Water and milk are two common liquids around us. ➢ A gas is a fluid from of matter which fills the whole container in which it is kept. Being fluids, gases also require a container to keep them. A gas does not have a free surface, so a gas has to be kept in a closed container. A gas will escape if kept in an open container. This is why gases are usually kept in air-tight gas cylinders. For example, cooking gas (LPG) is kept in air-tight metal cylinders. From this discussion we conclude that both, liquids and gases are known as fluids. Characteristic of liquids and gases of ‘flowing’ easily is called ‘fluidity’. Due to fluidity, liquids and gases change their shapes readily when subjected to outside force.

21.

Write the short note on Rigid and Fluid.

Answer»

➢ Rigid means ‘unbending’ or ‘inflexible’. A stone is rigid because it is unbending or inflexible. Fluid means ‘a material which can flow easily’ and requires a vessel (or container) to keep it.

➢ A solid is a rigid form of matter. Due to their rigidity, solids have a tendency to maintain their shape when subjected to outside force. Thus, the main identifying characteristic of solids is their rigidity. Solids do not require a container to keep them. A brick and a log of wood are two common solids.

➢ A liquid is a fluid form of matter which occupies the lower part of the container. Being fluids, liquids require a container to keep them. A liquid has a well-defined surface, so a liquid can be kept in an open container. The liquid will not escape from the open container by itself. Water and milk are two common liquids around us.

➢ A gas is a fluid from of matter which fills the whole container in which it is kept. Being fluids, gases also require a container to keep them. A gas does not have a free surface, so a gas has to be kept in a closed container. A gas will escape if kept in an open container. This is why gases are usually kept in air-tight gas cylinders. For example, cooking gas (LPG) is kept in air-tight metal cylinders. From this discussion we conclude that both, liquids and gases are known as fluids. Characteristic of liquids and gases of ‘flowing’ easily is called ‘fluidity’. Due to fluidity, liquids and gases change their shapes readily when subjected to outside force.

Discussion

22.	Solar energy ……….. source of energy. A) exhaustible B) inexhaustible C) both D) none of these
Answer» Correct option is B) inexhaustible

Discussion

23.	……….. is used in the manufacture of steel and extraction of many metals.A) Nickel B) Cobalt C) Zinc D) Coke
Answer» Correct option is D) Coke

Discussion

24.	Rubber band Activity: a) Let us stretch a rubber band. Is there a change in its shape? b) Is rubber band solid or liquid? Why?
Answer» a) When rubber band is stretched it changes its shape b) It is a solid. If stretching is stopped, the rubber band regains its shape. If the stretching is too much, the rubber band permanently loses its shape. Reason : Rubber band is a solid, but the nature of particles by which the rubber band is made is responsible for the above phenomena.

24.

Rubber band Activity: a) Let us stretch a rubber band. Is there a change in its shape? b) Is rubber band solid or liquid? Why?

Answer»

a) When rubber band is stretched it changes its shape

b) It is a solid. If stretching is stopped, the rubber band regains its shape. If the stretching is too much, the rubber band permanently loses its shape.

Reason : Rubber band is a solid, but the nature of particles by which the rubber band is made is responsible for the above phenomena.

Discussion

25.	The material A is fossil fuel which is extracted from the earth. It is said to be formed from the buried, large land plants by a very slow process B. when A is heated in the absence of air in a process called C, then it gives three products D, E and F. The product D is used as a reducing agent in the extraction of metals, the product E is used as an industrial fuel whereas the product F has been traditionally used for metallic the roads.(a) What could material A be? (b) What is (i) physical state, and (ii) colour, of A? (c) Name the processes (i) B, and (ii) C. (d) What are (i) D, (ii) E, and (iii) F?
Answer» (a) The material A is Coal. Coal is a fossil fuel. It was formed by the process of carbonisation. Carbonisation is the process by which plant material or vegetation buried deep under the earth was slowly converted into coal. This is a very slow process and usually takes millions of years. (b) Coal exists as solid. It is as hard as stone and is black in colour. (c) The process B is carbonization. It is a process by which plant material or vegetation buried deep under the earth was slowly converted into coal. This is a very slow process and usually takes millions of years. The process C is Destructive distillation. Destructive distillation is a chemical process of decomposition of a solid by heating it in a closed container. The volatile constituents produced in this process can be separated. Coal is processed in industry to get some useful products such as coke, coal tar and coal gas. (d) The product D is coke, E is Coal gas and F is Coal tar. Coal is processed in industry by the process of destructive distillation to get some useful products such as coke, coal tar and coal gas. Coke is a tough, porous and black substance. It is almost pure form of carbon. Coal is a mixture of about 200 substances. It is a black, thick liquid with unpleasant smell. Coal gas is obtained during the processing of coal to get coke.

25.

The material A is fossil fuel which is extracted from the earth. It is said to be formed from the buried, large land plants by a very slow process B. when A is heated in the absence of air in a process called C, then it gives three products D, E and F. The product D is used as a reducing agent in the extraction of metals, the product E is used as an industrial fuel whereas the product F has been traditionally used for metallic the roads.(a) What could material A be? (b) What is (i) physical state, and (ii) colour, of A? (c) Name the processes (i) B, and (ii) C. (d) What are (i) D, (ii) E, and (iii) F?

Answer»

(a) The material A is Coal. Coal is a fossil fuel. It was formed by the process of carbonisation. Carbonisation is the process by which plant material or vegetation buried deep under the earth was slowly converted into coal. This is a very slow process and usually takes millions of years.

(b) Coal exists as solid. It is as hard as stone and is black in colour.

(c) The process B is carbonization. It is a process by which plant material or vegetation buried deep under the earth was slowly converted into coal. This is a very slow process and usually takes millions of years.

The process C is Destructive distillation. Destructive distillation is a chemical process of decomposition of a solid by heating it in a closed container. The volatile constituents produced in this process can be separated. Coal is processed in industry to get some useful products such as coke, coal tar and coal gas.

(d) The product D is coke, E is Coal gas and F is Coal tar. Coal is processed in industry by the process of destructive distillation to get some useful products such as coke, coal tar and coal gas. Coke is a tough, porous and black substance. It is almost pure form of carbon. Coal is a mixture of about 200 substances. It is a black, thick liquid with unpleasant smell. Coal gas is obtained during the processing of coal to get coke.

Discussion

26.	What is carbonisation?
Answer» The slow process of conversion of dead vegetation into coal is called carbonisation.

Discussion

27.	What is petrochemicals?
Answer» The useful substances which are obtained from petroleum and natural gas are called petrochemicals.

Discussion

28.	Find the density of a handful of sand having a mass of 208 g and it displaces a volume of 80 mL of water.
Answer» Given: Mass of sand (m) = 208g Volume of water (v) = 80mL To calculate density (p), apply the formula given: Density = \(\frac{Mass}{Volume}\) Density = \(\frac{200g}{80ml}\) Density = 2.6g/mL We know that 1mL = 1cm³ Thus, the density of sand is 2.6g/cm³

28.

Find the density of a handful of sand having a mass of 208 g and it displaces a volume of 80 mL of water.

Answer»

Given:

Mass of sand (m) = 208g

Volume of water (v) = 80mL

To calculate density (p), apply the formula given:

Density = \(\frac{Mass}{Volume}\)

Density = \(\frac{200g}{80ml}\)

Density = 2.6g/mL

We know that 1mL = 1cm³

Thus, the density of sand is 2.6g/cm³

Discussion

29.	What is fluid?
Answer» Liquids have no fixed shape but have a fixed volume. They take up the shape of the container in which they are kept. Liquids low and change shape, so they are not rigid and can be called fluid. Examples of Fluid: i. River lowing ii. Blood circulating in our body.

29.

What is fluid?

Answer»

Liquids have no fixed shape but have a fixed volume. They take up the shape of the container in which they are kept. Liquids low and change shape, so they are not rigid and can be called fluid.

Examples of Fluid:

i. River lowing ii. Blood circulating in our body.

Discussion

30.	More pollutant among fossil fuels is A) coal B) petroleum C) natural gas D) none of these
Answer» Correct option is A) coal

Discussion

31.	Write any two uses of petrochemicals in our daily life.
Answer» Uses: They are used in the manufacture of detergents, synthetic fibres (polyester, nylon, acrylic) polythene, etc.

Discussion

32.	Coal, petroleum and natural gas are called ……… fuels. A) fossil B) natural C) artificial D) none of these
Answer» Correct option is A) fossil

Discussion

33.	Petroleum components are separated by a technique called A) distillation B) evaporation C) sublimation D) fractional distillation
Answer» Correct option is D) fractional distillation

Discussion

34.

Draw a table showing uses of petrochemicals in various sectors.

Answer»

Agricultural sector	Industrial sector	Domestic and other sectors
Plastic tubes, case, baskets, storing box, cultivation implements, fertilizers.	Cars, motor boats, commu‐ nication devices, construction materials, paper industry, belt and straps, tyres.	Medical equipments, apparels like clothes, bedding, socks, furniture, paints, washing liquids, road, fibre, cosmetics, medicines, polishing liquids, etc.

Discussion

35.	What are petrochemicals? What are the uses of petrochemicals?
Answer» The useful substances which are obtained from petroleum and natural gas are called petrochemicals. Uses: They are used in the manufacture of detergents, synthetic fibres (polyester, nylon, acrylic) polythene, etc.

35.

What are petrochemicals? What are the uses of petrochemicals?

Answer»

The useful substances which are obtained from petroleum and natural gas are called petrochemicals.

Uses:

They are used in the manufacture of detergents, synthetic fibres (polyester, nylon, acrylic) polythene, etc.

Discussion

36.	The slow process of conversion of dead vegetation into coal is called a) Carbonisation b) fuelification c) Coalfication d) None of the above
Answer» The slow process of conversion of dead vegetation into coal is called Carbonisation.

Discussion

37.	Fill in the blanks. (a) The slow process of conversion of dead vegetation into coal is called__________. (b) Coal and petroleum are formed from the dead remains of organisms and are known as __________. (c) The black thick liquid with __________ smell is known as coal tar. (d) During the processing of coal to get coke, coal tar and __________ are also obtained. (e) The process of separating the various constituents of petroleum is known as __________. (f) Excessive burning of fossil fuels is a major cause of __________.
Answer» (a) carbonisation, (b) fossil fuels, (c) unpleasant, (d) coal gas, (e) refining, (f) air pollution.

37.

Fill in the blanks. (a) The slow process of conversion of dead vegetation into coal is called. (b) Coal and petroleum are formed from the dead remains of organisms and are known as . (c) The black thick liquid with smell is known as coal tar. (d) During the processing of coal to get coke, coal tar and are also obtained. (e) The process of separating the various constituents of petroleum is known as . (f) Excessive burning of fossil fuels is a major cause of .

Answer»

(a) carbonisation,

(b) fossil fuels,

(c) unpleasant,

(d) coal gas,

(e) refining,

(f) air pollution.

Discussion

38.	Which substance is formed by the carbonisation of dead vegetation?.(a) coal(b) coke(c) coal gas(d) coal tar
Answer» The Right option is : (a) coal

Discussion

39.	Name the process by which plant material (or vegetation) buried deep under the earth was slowly converted into coal.
Answer» Carbonisation is the process by which plant material or vegetation buried deep under the earth was slowly converted into coal. Since, coal was formed from the remains of vegetation, it is also known as fossil fuel.

Discussion

40.	Naphthalene balls are obtained from coal tar and are used as(a) mosquito repellant(b) honey bee repellant(c) moth repellant(d) snake repellant
Answer» (c) moth repellant

Discussion

41.	Metals are extracted from A) petrochemicals B) dried up trees C) sand D) ores
Answer» Correct option is D) ores Answer - Ores, Metal is extracted from ores.

Discussion

42.	Process of conversion of dead vegetation into coal is called A) hydrogenation B) calcination C) carbonisation D) oxidation
Answer» Correct option is C) carbonisation

Discussion

43.	What are the products obtained on fraction distillation of coal tar?
Answer» The products obtained on fraction distillation of coal tar are: Synthetic Dyes Drugs Explosives Paints and perfumes Plastic balls Roofing materials Naphthalene balls

43.

What are the products obtained on fraction distillation of coal tar?

Answer»

The products obtained on fraction distillation of coal tar are:

Synthetic Dyes
Drugs
Explosives
Paints and perfumes
Plastic balls
Roofing materials
Naphthalene balls

Discussion

44.	Separation of petroleum products from petroleum is called ………. A) refinery B) distillation C) poling D) liquification
Answer» Correct option is A) refinery

Discussion

45.	Match the items given in Column I with the items of Column II.Column IColumn II(a) Used for road surfacing(i) Black gold(b) Natural gas(ii) Vaseline and candles(c) Petroleum(iii) Bitumen(d) Paraffin wax(iv) CNG
Answer» (a)–(iii), (b)–(iv), (c)–(i), (d)–(ii)

Discussion

46.	State whether the following statements are true or false: (a) Coke is almost pure from carbon. (b) Coal tar is a mixture of various substances. (c) Kerosene is not a fossil fuel. (d) CNG is more polluting than petrol. (e) Fossil fuels can be made in the laboratory.
Answer» (a) This statement is True. It is a tough, porous and black substance. It is almost pure form of carbon. (b) This statement is True. Coal tar is the product of coal which is a thick black liquid having an unpleasant smell. It is a mixture of about 200 substances. (c) This statement is False. Kerosene is a fossil fuel. It is used as a fuel for stoves, lamps and for jet aircrafts. (d) This statement is False. CNG is less polluting than petrol. It is a clean burning fuel. It produces 45% less hydrocarbons than petrol. (e) This statement is False. The formation of fossil fuels is a very slow process. These are formed under very high pressure and high temperature. The conditions for their formation cannot be created in the laboratory.

46.

State whether the following statements are true or false: (a) Coke is almost pure from carbon. (b) Coal tar is a mixture of various substances. (c) Kerosene is not a fossil fuel. (d) CNG is more polluting than petrol. (e) Fossil fuels can be made in the laboratory.

Answer»

(a) This statement is True.

It is a tough, porous and black substance. It is almost pure form of carbon.

(b) This statement is True.

Coal tar is the product of coal which is a thick black liquid having an unpleasant smell. It is a mixture of about 200 substances.

(c) This statement is False.

Kerosene is a fossil fuel. It is used as a fuel for stoves, lamps and for jet aircrafts.

(d) This statement is False.

CNG is less polluting than petrol. It is a clean burning fuel. It produces 45% less hydrocarbons than petrol.

(e) This statement is False.

The formation of fossil fuels is a very slow process. These are formed under very high pressure and high temperature. The conditions for their formation cannot be created in the laboratory.

Discussion

47.	What is coal tar and what are its uses?
Answer» Coal tar: It is a black coloured thick liquid with an unpleasant smell. It is a mixture of about 200 substances. Uses: Products obtained from the coal tar are used as starting material for various substances like synthetic dyes, drugs, explosives, perfumes, plastics, paints and roofing material. Naphthaleine balls obtained from coal tar used to repel moths and other insects.

47.

What is coal tar and what are its uses?

Answer»

Coal tar: It is a black coloured thick liquid with an unpleasant smell. It is a mixture of about 200 substances.

Uses:

Products obtained from the coal tar are used as starting material for various substances like synthetic dyes, drugs, explosives, perfumes, plastics, paints and roofing material. Naphthaleine balls obtained from coal tar used to repel moths and other insects.

Discussion

48.	……….. is a mixture of 200 substances. A) Coal B) Coal gas C) Carbon D) Coal tar
Answer» Correct option is D) Coal tar

Discussion

49.	Ramu told Rahim that solar energy is inexhaustible resource then what are the questions raised in the mind of Rahim about solar energy?
Answer» 1. If it is inexhaustible resource of energy why don’t we are using it? 2. Whether utilization of solar energy is difficult? 3. Whether sophasticated techniques not available for proper use of solar energy at present? 4. It is costly to use solar energy for producing electric power?

49.

Ramu told Rahim that solar energy is inexhaustible resource then what are the questions raised in the mind of Rahim about solar energy?

Answer»

1. If it is inexhaustible resource of energy why don’t we are using it?

2. Whether utilization of solar energy is difficult?

3. Whether sophasticated techniques not available for proper use of solar energy at present?

4. It is costly to use solar energy for producing electric power?

Discussion

50.	Name the petroleum products is used for roads surfacing.
Answer» A petroleum product of bitumen is used for roads surfacing in place of coal tar these days.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

……….. use wind energy to produce current. A) Panels B) Wind guage C) Wind mill D) None of these

Liquid gold is A) Petrol B) Coal C) Petroleum D) Kerosene

Purest form of carbon is called A) coal B) charcoal C) lamp black D) coke

………. gas obtained during the processing of coal to get coke. A) Coal B) LPG C) CNG D) None of these

Coal is processed in industries to get some useful products. Which of the following is not obtained from coal? (a) coke (c) coal gas (b) coal tar (d) CNG

Name three useful products of coal.

Classification of natural resources.

What is meant by natural resources?

The melting point of ice is 273.16 K. What does this mean? Explain in detail.

Define boiling point, melting point and evaporation ?

These microbes, which were produced petroleum are appreciable A) Plankton B) Dengue C) Sea animals D) Starfish

Given figure is an example for ………. type of energy resource.A) natural B) renewable C) non-renewable D) both A and B

This experiment shows A) Burning of coal gas B) Burning of petrol C) Burning of coke gas D) None

List the name of products of coal.

Short note on Michael Faraday.

………… is exhaustible fuel among the fuels given below.A) Solar energy B) Wind energy C) Coal D) Tidal energy

Coal is used to manufacture A) Napthalene B) Paints C) Kerosene D) Both A and B

……….. is used for lighting. A) Coal B) Coke C) Coal tar D) Coal gas

Out of the following, an example of matter which can be termed as fluid is: (a) Carbon (b) Sulphur (c) Oxygen (d) Phosphorus

Write the short note on Rigid and Fluid.

Solar energy ……….. source of energy. A) exhaustible B) inexhaustible C) both D) none of these

……….. is used in the manufacture of steel and extraction of many metals.A) Nickel B) Cobalt C) Zinc D) Coke

Rubber band Activity: a) Let us stretch a rubber band. Is there a change in its shape? b) Is rubber band solid or liquid? Why?

What is carbonisation?

What is petrochemicals?

Find the density of a handful of sand having a mass of 208 g and it displaces a volume of 80 mL of water.

What is fluid?

More pollutant among fossil fuels is A) coal B) petroleum C) natural gas D) none of these

Write any two uses of petrochemicals in our daily life.

Coal, petroleum and natural gas are called ……… fuels. A) fossil B) natural C) artificial D) none of these

Petroleum components are separated by a technique called A) distillation B) evaporation C) sublimation D) fractional distillation

Draw a table showing uses of petrochemicals in various sectors.

What are petrochemicals? What are the uses of petrochemicals?

The slow process of conversion of dead vegetation into coal is called a) Carbonisation b) fuelification c) Coalfication d) None of the above

Which substance is formed by the carbonisation of dead vegetation?.(a) coal(b) coke(c) coal gas(d) coal tar

Name the process by which plant material (or vegetation) buried deep under the earth was slowly converted into coal.

Naphthalene balls are obtained from coal tar and are used as(a) mosquito repellant(b) honey bee repellant(c) moth repellant(d) snake repellant

Metals are extracted from A) petrochemicals B) dried up trees C) sand D) ores

Process of conversion of dead vegetation into coal is called A) hydrogenation B) calcination C) carbonisation D) oxidation

What are the products obtained on fraction distillation of coal tar?

Separation of petroleum products from petroleum is called ………. A) refinery B) distillation C) poling D) liquification

Match the items given in Column I with the items of Column II.Column IColumn II(a) Used for road surfacing(i) Black gold(b) Natural gas(ii) Vaseline and candles(c) Petroleum(iii) Bitumen(d) Paraffin wax(iv) CNG

State whether the following statements are true or false: (a) Coke is almost pure from carbon. (b) Coal tar is a mixture of various substances. (c) Kerosene is not a fossil fuel. (d) CNG is more polluting than petrol. (e) Fossil fuels can be made in the laboratory.

What is coal tar and what are its uses?

……….. is a mixture of 200 substances. A) Coal B) Coal gas C) Carbon D) Coal tar

Ramu told Rahim that solar energy is inexhaustible resource then what are the questions raised in the mind of Rahim about solar energy?

Name the petroleum products is used for roads surfacing.