CNG,LNG,LPG

Q.

What is the full form of PNG?

Q.

Carbon exists in the atmosphere in the form of-

1. Carbon mono-oxide

2. Carbon mono oxide in traces and carbon dioxide

3. Carbon dioxide only

4. Coal

Q.

State any one reason for overuse of resources.

Q. Which of the following are the advantages of internal combustion engine over external combustion engine?

1. Complex construction
2. Higher efficiency
3. Safer to use
4. Can be started immediately

Q. Which of the following are examples of the internal combustion engine?

1. Petrol Engine
2. Hand driven dynamo
3. Diesel engine
4. Steam Engine

Q. What is the ultimate source of energy on the earth?

Q. What is calarofic value? And what is the calarofic value of coke.

Q.

How is biogas obtained from biomass?

Q.

Major component of LPG is

Q. Which one among the following is strong smelling agent added to LPG cylinder to help in the detection of gas leakage?

1. Ethanol
2. Thioethanol
3. Methane
4. Chloroform

Q.

Cars run on the energy released during fuel consumption. Vinod has purchased a new car that runs on diesel fuel while Sachin has purchased a new petrol car and is getting a CNG kit installed in the same. Of these two people who have made a better decision for the sake of our environment explain.

Q.

What are combustion and incomplete combustion?

Q.

Which gas is used as fire extinguisher? Which gas is used to run vehicles?

Q.

10. The trapping of solar heat energy by certain gaseous molecules present in earths atmosphere is called_____________.

Q.

Name the following:

Ammonium salt used in explosives.

Q. The part of the petrol engine in which the petrol vapours mix with air is called ___ .

Q.

Give any two reasons for the use of animal dung in biogas plant. Write any two advantages of using biogas over animal dung cakes.

Q.

Why do gaseous fuels have high calorific values?

Q.

What is the use of slurry left behind after the formation of biogas?

Q.

Effects of global warming

Q. The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of:

1. bromine
2. fluorine
3. chlorine
4. sulphur

Q. Which of the factors is mainly responsible for the increase in demand of natural resources?

1. Environmental Pollution
2. Increase in Human Population
3. Scientific advancement
4. Use of Biodegradable Chemicals

Q.

Name any two green house gases.

Q.

Acid rain is caused by the excess?

1. Excess production of coal gas

2. Excess release of SO₂ and NO2 fromburning fossil fuels

3. Excess release of CO₂ due to increasing combustion and respiration

4. Excess production of gaseous hydrocarbons

Q.

Which of these is a renewable source of energy?

1. coal

2. CNG

3. petroleum

4. solar energy

Q.

Which component of the sunlight facilitates dehydration of fruits and vegetables while sun-drying them?

Q.

What is meant by Combustion?

Q. Major constituent of LPG is:

1. butane
2. ethene
3. propane
4. pentane

Q. The poisonous gas formed by the combustion of coal in insufficient oxygen is:

1. sulphar dioxide
2. nitric oxide
3. carbon dioxide
4. carbon monoxide

Q. Which of the following gas (es) is used as fuel in internal combustion engine?

1. Liquefied petroleum gas (LPG)
2. Blast furnace gas
3. Coke oven gas
4. all of the above