Chapter 8: Energy Resources - Science Mcqs for Grade 7 - Set 3

1)   A dangerous activity which results in many deaths due to gas explosion, caves in and flooding is

a. coal mining
b. climbing mountain
c. extracting oil
d. hydropower generation
Answer  Explanation 

ANSWER: coal mining

Explanation:
No explanation is available for this question!


2)   Solar cells and solar furnaces are

a. cheap
b. expensive
c. free
d. reasonable
Answer  Explanation 

ANSWER: expensive

Explanation:
No explanation is available for this question!


3)   For heating, the more suitable flame is

a. luminous flame
b. non luminous flame
c. bright flame
d. dull flame
Answer  Explanation 

ANSWER: non luminous flame

Explanation:
No explanation is available for this question!


4)   Almost every resource of earth's energy can be traced back to

a. sun
b. moon
c. earth
d. plants
Answer  Explanation 

ANSWER: sun

Explanation:
No explanation is available for this question!


5)   A moving car releases energy during process of burning

a. petrol
b. water
c. diesel
d. coal
Answer  Explanation 

ANSWER: petrol

Explanation:
No explanation is available for this question!


6)   Due to constant heat and pressure, buried plants turn in to

a. wood
b. coal
c. fertilizer
d. oil
Answer  Explanation 

ANSWER: coal

Explanation:
No explanation is available for this question!


7)   Living things are source of

a. fossils fuel
b. bio mass
c. both a and b
d. coal
Answer  Explanation 

ANSWER: both a and b

Explanation:
No explanation is available for this question!


8)   Atomic number of 'Zinc' is

a. 10
b. 20
c. 30
d. 40
Answer  Explanation 

ANSWER: 30

Explanation:
No explanation is available for this question!


9)   The need and demand of fossils fuel can be reduced by

a. conserving energy
b. storing energy
c. utilizing energy
d. transforming energy
Answer  Explanation 

ANSWER: conserving energy

Explanation:
No explanation is available for this question!


10)   Toxic air pollutants like sulphur dioxide and nitrogen oxides are produced by burning

a. coal
b. oil
c. gases
d. both a and b
Answer  Explanation 

ANSWER: both a and b

Explanation:
No explanation is available for this question!