A) Both A and R are true and R is correct explanation of the assertion.
B) Both A and R are true but R is not the correct explanation of the assertion.
C) A is true but R is false.
D) A is false but R is true.
1. ASSERTION- We get energy from non- renewable sources.
REASON - Fossil fuels are formed over a period of million of years by the action of
heat.
i) A ii)B iii)C iv) D.
2. ASSERTION- Burning of wood produces heat which is useful.
REASON - Useful gases are produced by burning of wood.
i) A ii)B iii)C iv) D.
3. ASSERTION- Coal tar is a black liquid of high viscosity.
REASON- Coal is used in synthetic dyes , paints etc.
i) A ii)B iii)C iv) D.
4. ASSERTION- Coke is used for extraction of metals.
REASON - Coke gives little or no smoke.
i) A ii)B iii)C iv) D.
5. ASSERTION- Coal is formed from animals remains buried under the earth's crust.
REASON- Coal is a fossil fuel.
i) A ii)B iii)C iv) D.
6. ASSERTION- Wind, Sun , biomass from plants and hydropower from water are all
renewable sources of energy.
REASON- Renewable sources are inexhaustible natural resources.
i) A ii)B iii)C iv) D
7. ASSERTION- All varieties of Coal are very useful for industrial application.
REASON- Coal contains volatile compounds of carbon.
i) A ii)B iii)C iv) D.
Answers
Answer:
A) Both A and R are true and R is correct explanation of the assertion.
B) Both A and R are true but R is not the correct explanation of the assertion.
C) A is true but R is false.
D) A is false but R is true.
1. ASSERTION- We get energy from non- renewable sources.
REASON - Fossil fuels are formed over a period of million of years by the action of
heat.
i) A ii)B iii)C iv) D.
2. ASSERTION- Burning of wood produces heat which is useful.
REASON - Useful gases are produced by burning of wood.
i) A ii)B iii)C iv) D.
3. ASSERTION- Coal tar is a black liquid of high viscosity.
REASON- Coal is used in synthetic dyes , paints etc.
i) A ii)B iii)C iv) D.
4. ASSERTION- Coke is used for extraction of metals.
REASON - Coke gives little or no smoke.
i) A ii)B iii)C iv) D.
5. ASSERTION- Coal is formed from animals remains buried under the earth's crust.
REASON- Coal is a fossil fuel.
i) A ii)B iii)C iv) D.
6. ASSERTION- Wind, Sun , biomass from plants and hydropower from water are all
renewable sources of energy.
REASON- Renewable sources are inexhaustible natural resources.
i) A ii)B iii)C iv) D
7. ASSERTION- All varieties of Coal are very useful for industrial application.
REASON- Coal contains volatile compounds of carbon.
i) A ii)B iii)C iv) D.
Sorry for answer
Answer:
A) Both A and R are true and R is correct explanation of the assertion.
B) Both A and R are true but R is not the correct explanation of the assertion.
C) A is true but R is false.
D) A is false but R is true.
1. ASSERTION- We get energy from non- renewable sources.
REASON - Fossil fuels are formed over a period of million of years by the action of
heat.
i) A ii)B iii)C iv) D.
2. ASSERTION- Burning of wood produces heat which is useful.
REASON - Useful gases are produced by burning of wood.
i) A ii)B iii)C iv) D.
3. ASSERTION- Coal tar is a black liquid of high viscosity.
REASON- Coal is used in synthetic dyes , paints etc.
i) A ii)B iii)C iv) D.
4. ASSERTION- Coke is used for extraction of metals.
REASON - Coke gives little or no smoke.
i) A ii)B iii)C iv) D.
5. ASSERTION- Coal is formed from animals remains buried under the earth's crust.
REASON- Coal is a fossil fuel.
i) A ii)B iii)C iv) D.
6. ASSERTION- Wind, Sun , biomass from plants and hydropower from water are all
renewable sources of energy.
REASON- Renewable sources are inexhaustible natural resources.
i) A ii)B iii)C iv) D
7. ASSERTION- All varieties of Coal are very useful for industrial application.
REASON- Coal contains volatile compounds of carbon.
i) A ii)B iii)C iv) D.