Fossil Fuels

Q. Coal gas is a mixture of

1. $C_4{H}_{10}\left(Butane\right)+H_{2}O$
2. $C_2{H}_6\left(Ethane\right)+H_2+O_2$
3. $C{H}_4\left(Methane\right)+H_2+CO$
4. $C_4{H}_{10}\left(Butane\right)+H_2+CO$

Q.

Which one of the following is not a fossil fuel ?
(a) petrol (b) coke (c) charcoal (d) coal

Q.

(a) What happens when carbon burns in air? Write the chemical equation of the reaction which takes place.
(b) Why are coal and petroleum called fossil fuels?
(c) Explain how coal was formed in the earth.
(d) Describe how petroleum was formed in the earth.
(e) Name a fossil fuel other than coal and petroleum.

Q.

Alcohol, CNG and LPG are inflammable substances. (True or False). Also write the false statements in their correct form.

1. True
2. False

Q.

Fuels formed from remains of plants and animals buried millions of years ago are called ________.

Q.

Which fossil fuel is refined to produce gasoline?

Q. Identify the fibres that can be manufactured using petrochemicals.

1. Nylon
2. Polyester
3. Acrylic
4. Silk

Q. What is the difference between the formation of coal and petroleum?

Q.

Which of the following is not a renewable energy?

1. Wind

2. Water

3. Forest

4. Coal

Q.

Analysis of the black soot left over from a fire would reveal the presence of:

1. carbon

2. oxygen

3. nitrogen

4. lead

Q. Coal can be formed from ____________.

1. sunlight
2. steam
3. fossils
4. plants

Q. State true or false.

1. True
2. False

Q. Which one of the following is not a fossil fuel?

(a) petrol
(b) cock
(c) charcoal
(d) coal

Q.

What are chemicals derived from petroleum called?

1. Petrochemicals

2. Synthetic materials

3. Inorganic compounds

4. Petrol chemicals

Q. Example for fossil fuel is .............

1. Copper
2. Iron
3. Coal
4. Magnesium

Q. The process of obtaining sulphur by the borehole method is called :

1. The Frasch process.
2. The Lablanc process.
3. The Calcaroni process.
4. The Mannheium process.

Q. What are the various steps which can be taken to control (or reduce) pollution caused by burning fossil fuels ?

Q. Write down the characteristics of Rocket fuel.

Q. Oil is found in great quantities in some places under huge pressure. Which of the following is incorrect?

1. The gushing oil can reach a mile up in the sky
2. The oil can collect in a size big enough to float a navy
3. The gushing oil can throw off a crane like a toy
4. Precaution is necessary against fire hazard

Q. Materials ( resources ) are classified as ___________ and _________.

1. natural and synthetic
2. limited and unlimited
3. exhaustible and unexhaustible
4. both b and c

Q. Name three fossil fuels that emit carbon dioxide into the atmosphere

Q. is a high-temperature chemical reaction between a fuel and oxygen.

1. Combination
2. Combustion
3. Calcination