Q2 of 13 Page 155

Explain.

Hydrogen is not used as a household fuel though it is of very high calorific value.

Hydrogen is not used as a household fuel though it is of very high calorific value due to following reasons.

1. It is costly and is not easily available.


2. Storage of hydrogen is very difficult.


3. It is highly explosive due to which it may cause severe damage.


4. It does not burn at slow rate with the controlled combustion.


5. It is not safe to handle.


More from this chapter

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1

Classify the following sources of energy as renewable and nonrenewable. Which among them are sources of green energy? Write them down

•Petroleum •coal • wind


• ocean • wave • hydroelectric power


• solar energy.

 2

Explain.

Fossil fuels are to be used judiciously

 2

Explain.

As far as possible avoid burning of biomass

 3

Establish that encouraging the use of green energy is a need of the time.