From the following statements given below, find out the statements related to Nuclear Fusion

1. The activity of dividing heavy nuclei
2. The activity of joining light nuclei
3. It is the reason for the energy production in stars
4. The principle behind atom bomb.

If we completely convert 1 gm of matter in to energy, we get 9x10¹³J energy.

1. Which equation of Einstein help us to find this?
2. By what name are the power stations that utilize the matter-energy conversion known?

Fossil fuels are precious and it is to be conserve for the future.

1. What is mean by fossil fuels?
2. Prepare posters to convince the need of utilising fossil fuels in a rational way.

LPG is an important fuel for house hold utilisation.

1. Write the full form of LPG
2. Which is the main constituent in LPG?
3. Why Ethyl mercaptan is added to this fuel?

Hydrogen is a fuel having high calorific value.

1. Write the situation,in which hydrogen is used as a fuel?
2. Why hydrogen is not used as a house hold fuel?

In large cities, now CNG is used in vehicles instead of petrol and diesel

1. What is mean by CNG?
2. Write two advantages of using CNG

Find out the statements related to LNG from the following.

a) Ethyl mercaptan is added

b) Main constituent in this is Methane

c) Main constituent in this is Butane

d) It is used as a fuel in Industries and Power stations

1. How fossil fuels are formed in nature?
2. Write two examples of fossil fuels?

What is the purpose of pollution test in vehicles?

For the complete combustion air (oxygen) is needed.

a) what is mean by partial combustion?

b)Write the disadvantages of partial combustion?

c) Write the name of two products during combustion

Which among the following are the two forms of coal ?

(Coal tar, anthracite, lignite, paraffin)

Substances related to coal are given below. Tabulate them in to two

(i)Forms of coal and (ii) Products of coal after distillation ?

1. Coal tar
2. Coke 
3. Peat 
4. Lignite
5. Ammonia
6. Anthracite
7. Coal gas 
8. Bituminous coal

Fill suitably

--------------is the gas used in Hydrogen fuel cell with hydrogen

(Nitrogen, CO, Oxygen, CO2)

Write any three qualities of a good fuel ?

1. Write two examples for Biomass ?
2. What are the 2 problems of Biomass as a fuel?

Converting biomass in to biogas is beneficial for agriculture and reducing environmental pollution- Explain

1. In which name the energy sources which causes the environmental pollution including global warming is called ?
2. Write two examples for these type of energy sources?

There will be foul smell when the bio wastes are heaped together.

1. Which gases causes this foul smell?
2. How biogas is formed from bio wastes?

Write the situations in which the following materials are used related to fuels.

1. Ethyl Mercaptan
2. Enriched Uranium

1. What is the energy change in solar panel?
2. Why do we call Solar panel as an electronic device?
3. Explain photo voltaic effect?

Write the name of the two appliances which use heat energy directly from solar energy?

Find out the odd one and write the reason?

1. Diesel, LPG, Coal gas, Petrol
2. Solar energy, wind energy, nuclear energy.

For the solution of energy crisis, we have to utilise maximum green energy when building a house.

• Suggest two methods to utilise green energy while constructing a house.

1. What is known as energy crisis?
2. Write 4 situations which leads to energy crisis?
3. Suggest two methods to solve energy crisis.

Nuclear fusion and nuclear fusion are two ways of producing energy from the nucleus of an atom.

Write two advantages of nuclear fusion over nuclear fusion 

From the following sources, Find out the Sources of Green energy?

(1) Atomic reactors

(2) Solar cells

(3) Thermal power stations

(4) Tidal power station

(5) Hydro electric power station

(6) Windmill farms 

Analyse the following statements related to solar water heater and answer the questions

* Hot water is taken from the upper side of the solar water heater tank.

*When heated the density of the water is changed.

(1) Explain the working of a solar water heater, based on the above statements.

What are the advantageous of storing bio-wastes in a bio gas plant instead of throwing it.?

Write the difference between a solar voltaic power plant and solar thermal power plant.

Find the relation and fill in the blanks

a.kerosene : Petroleum

    Ammonia : ---------

b.LPG : Butane

   CNG: --------------

Find the odd one and write the reason?

(Coal tar, Coal gas, Nitrogen, Ammonia)