Question

A school organized a study tour for its students to observe how do people in village

use energy resources for their living. They observed that in one of the villages,

people use wood and cow dung as a fuel while in the nearby village they saw

modern technology was used by the villagers for better sanitation and management

of their bio-waste and sewage materials by establishing bio gas plant.

(a) If you compare the situation of both the villages, which practice would you

prefer to be the best and why ?

(b) Name some other cleaner fuels.

(c) What are the harmful effects of burning wood and cow dung?

(d) Between wood, cow dung, biogas, coal, LPG --which has the highest calorific

value?



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Answer 1

Answer:

a] when we compare both the villages with their practices, then we can say the village with modern waste treatment is better.

Because :

---> It helps to make the earth a green and better place to live by reducing pollution.

--->safe and clean fuel  

---> slurry left behind an be used as manure to agricultural fields.

C] values we get from this tour are :

---> Observing surroundings and implementing in daily life.

-->sharing of knowledge, adopting to new technology,willingness to gain knowledge.