14 Source of Energy 14 Source of Energy

Which of the following gases is a supporter of combustion?

2.The combustion process in which heat and light are produced in a very short time is called— 

3.Producer gas is a mixture of—

4.The main constituent of gobar gas (biogas) is—

The main constituent of L.P.G. (Liquefied Petroleum Gas) is—

Which of the following mixture is called coal gas?

The fuels used to run rockets are called—

When steam is passed over red hot coke, a mixture of carbon monoxide and hydrogen is obtained, which is called—

The amount of heat obtained by the complete combustion of 1 gram of a fuel in air or oxygen is called—

The main constituent of natural gas is—

Why is C.N.G. (Compressed Natural Gas) called environment-friendly?

From a biogas plant, which of the following gas is used as a fuel gas?

Burning petrol cannot be extinguished with water, because–

The essential conditions for a good fuel are—

Which of the following fossil fuels is the cleanest fuel?

For safety, which substance is added to domestic L.P.G. cylinders to make the gas smell (odorized)?

Which type of coal is known as Brown Coal?

Respiration is which type of combustion process?

Which of the following is not a fossil fuel?

20.Which gas is mainly present in L.P.G. (Liquefied Petroleum Gas)? 

Which of the following has the highest calorific value?

Conditions necessary for combustion are –

Water gas is a mixture of –

In an ordinary fire extinguisher, CO₂ is produced by the reaction of –

The gaseous mixture of carbon monoxide (CO) and nitrogen (N₂) is called –

Which of the following fuels causes the least environmental pollution?

Match the items in list I with the items in list II based on the correct usage of gases mentioned in List I for the corresponding applications given in List II.

List I (Types of Gas)                                  
A. CNG
B. LPG
C. Butane Gas
D. Natural Gas

List II (Applications)

1. Compressed Natural Gas, Hydrogen
2. Cylinder, Propane
3. Hydrocarbon, Methane
4. Hydrogen, Compressed Natural Gas

The property of a fuel that represents its anti-knocking quality is—

The substances which burn to provide heat are called—

The liquefied mixture of normal butane and iso-butane is called—

Which of the following is used as propellant fuel in rockets?

What is the full form of L.P.G.?

The minimum temperature at which a substance starts burning is called—

In terms of energy released per gram of fuel, which of the following is the best fuel?

Among different types of coal, which has the highest percentage of carbon?

The combustion reaction which occurs without any external heat is called—

Which of the following is not a fuel element?

Which of the following is a renewable source of energy?

Which of the following is NOT an example of a biomass energy source?

Which of the following is a renewable energy source?