Name three fuels used to cook food at home.

Mention one use of biogas.

Write examples for gaseous fuel.

Observe the picture given below and write the specialty of the picture. 
   

Observe the picture given below and write the speciality of the picture.

Can you explain, why?

LPG is a gas, but it is compressed and filled in cylinders. Why?

Wood is also a fuel used mostly for the purposes of cooking. What else can be used as an alternative? In case you must use wood what would you do?

Observe the picture given below and write the speciality of the picture. 

Write examples for solid fuel.

Observe the picture given below and write the speciality of the picture.

What do we make with wood?