Some important topics of science class 8 chapter 5 for presentation in class please help
pujakahar2004:
Coal and petroleum
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1. differentiate between exhaustible and inexhaustible resources
2. define carbonisation
3. what do you mean by refining
4.what is the use of petroleum gas
5 . write the full form of
a) LPG
b) CNG
answers
1. exhaustible resources are those resources which are present in limited amount
inexhaustible resources are those resources which are present in unlimited amount.
2. the process of conversation of dead vegetation into coal is known as carbonisation
3. the process of separating the various fractions of petroleum is known as refining
4. petroleum gas is used as a fuel for home or industries
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2. define carbonisation
3. what do you mean by refining
4.what is the use of petroleum gas
5 . write the full form of
a) LPG
b) CNG
answers
1. exhaustible resources are those resources which are present in limited amount
inexhaustible resources are those resources which are present in unlimited amount.
2. the process of conversation of dead vegetation into coal is known as carbonisation
3. the process of separating the various fractions of petroleum is known as refining
4. petroleum gas is used as a fuel for home or industries
hope it help
mark me as braniest
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