8th Class Science Chapter 1 MCQ Test With Answer for Science chapter 1

MCQ's Test For Chapter 1 "General Science 8th Class English Medium Chapter 1 Online Test"

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General Science 8th Class English Medium Chapter 1 Online Test

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Question # 1

Carbon cycle and ............. cycle are teh processes in whihc these minerals circulate between the organisms and the environment.

Question # 2

Ozone is a layer of gases in ............. atmosphere of the Earth.

Question # 3

Which factor is responsible for ecological imbalance.

Question # 4

A relationship where two species live togetehr closely is called.

Question # 5

A relationship where two species live together closely is called

Question # 6

The poisonous and harmsful substances which make the air unfavorable for life are called.

Question # 7

The feeding level of an organism in an ecosystem is called.

Question # 8

During the combustion of fossil fuel. Which gas is ener the atmosphere.

Question # 9

Th graphical epresentation of tropihic relationship oforaganisms in an ecosystem is called.

Question # 10

The energy of the Sun in traped as chemical energy by.

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1st Chapter

8th General Science English Medium Chapter 1 Test

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8th General Science (English Medium) Chapter 1 Important MCQ's

Sr.# Question Answer
1 ------------- gas is released when dead organisms are decomposed by the decomposers.
A. Oxygen
B. Carbon dioxide
C. Nitrogen
D. Hydrogen
2 Green house gases is
A. Carbon di oxide
B. Methane
C. Oxides of nitrogen
D. All these
3 During the combustion of fossil fuel. Which gas is ener the atmosphere.
A. Nitrogen
B. Oxygen
C. Carbon di oxide
D. Hydrogen
4 --------occupy the b ase of pyramid.
A. Producers
B. Primary canivores
C. Herbivores
D. Top carnivores
5 Which factor is responsible for ecological imbalance.
A. Over hunting
B. Change in water supply
C. Migration
D. All these
6 A symbiotic relationship in whihc both speciesl get benefit is called.
A. Commensalism
B. Hebitate
C. Mutualism
D. Symbiosis
7 The poisonous and harmsful substances which make the air unfavorable for life are called.
A. Solid pollutant
B. Air pollutant
C. Water pollutant
D. Acid Rain
8 A relationship where two species live together closely is called
A. Symbiosis
B. Predation
C. Competitor
D. None of these
9 All the food chains are joined together to form .....
A. Food web
B. Ecologicla pyramid
C. Tropicla level
D. None of these
10 ------------- through the food chain is one of the most important functionsof an ecosystem in maintaining balance of nature.
A. Waisting of energy
B. Destroy fo energy
C. Transfer of energy
D. Produce of energy

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