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Question-1
Earlier 'it' was used for street lightning.Now 'it' is used as a source of heat rather than light.'It' is

(A) Coal gas	(B) Coal tar
(C) Coal	(D) Coke

Question-2
Which energy in plants is used by man in the form of food?

(A) Chemical	(B) Electrical
(C) Bio	(D) Physical

Question-3
The first oil well was drilled in India?

(A) Gujarat	(B) Assam
(C) Pennsylvania	(D) none of these

Question-4
2C+0₂+4N₂—>?

(A) 2C0 + 2N₂	(B) CO + H₂
(C) CO + CH₄	(D) CO + NO₂

Question-5
Coal mainly contains ___________.

(A) Carbon	(B) Carbon and nitrogen
(C) Carbon, hydrogen and nitrogen	(D) Carbon, nitrogen and oxygen

Question-6
In a fractionating column, substances with _______ boiling points condense first.

(A) Lower	(B) Higher
(C) Moderately low	(D) Moderately high

Question-7
The slurry residue after obtaining biogas is used as?

(A) Pesticide	(B) Manure
(C) Insecticide	(D) None

Question-8
Select the quality that a good fuel should possess.

(A) High calorific value	(B) A low calorific value
(C) It should burn too fast	(D) It should burn too slow

Question-9
Which one of the following is a product of coal?

(A) Paraffin wax	(B) Diesel
(C) Coke	(D) Charcoal

Question-10
What is the main source of transportation of natural gas?

(A) Cylinders	(B) Barriers
(C) Pipes	(D) It cannot be transported.

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Std 8

CBSE

Practice in Related Chapters
Combustion,flame and fuel
Coal and Petroleum
Synthetic Fibres and Plastics
Pollution of Air and Water
Metals and Non-Metals