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8th Class General Science Chapter 1 Online Test
8th Class English Medium Subjects
8th Class Urdu Medium Subjects
MCQ's Test For Chapter 1 "General Science 8th Class English Medium Chapter 1 Online Test"
Try The MCQ's Test For Chapter 1 "General Science 8th Class English Medium Chapter 1 Online Test"
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Total Questions10
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Time Allowed10
General Science 8th Class English Medium Chapter 1 Online Test
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Question # 1
Which factor is responsible for ecological imbalance.
Question # 2
------------- through the food chain is one of the most important functionsof an ecosystem in maintaining balance of nature.
Question # 3
During respiration by the animals, whihc gas is released into the atmosphere.
Question # 4
The poisonous and harmsful substances which make the air unfavorable for life are called.
Question # 5
All the food chains are joined together to form .....
Question # 6
Half of the increase in atmospheric carbon dioxide concentrations in the last.............. years has occured since 1980
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
A relationship where two species live together closely is called
Question # 10
Green house gases is
8th General Science English Medium Chapter 1 Test
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| Sr.# | Question | Answer |
|---|---|---|
| 1 | Green house gases is |
A. Carbon di oxide
B. Methane
C. Oxides of nitrogen
D. All these
|
| 2 | Carbon cycle and ............. cycle are teh processes in whihc these minerals circulate between the organisms and the environment. |
A. Hydrogen
B. Iodine
C. Oxygen
D. Nitrogen
|
| 3 | The feeding level of an organism in an ecosystem is called. |
A. Food Web
B. Food chain
C. Trophical level
D. Secession level
|
| 4 | A food chain starts from the.......... |
A. Primary carnivores
B. Herbivores
C. Producers
D. Top carnivores
|
| 5 | The organisms upon whihc a redator feeds are called. |
A. Prey
B. Carnivores
C. Herbivores
D. Producers
|
| 6 | A relationship where two species live togetehr closely is called. |
A. Mutualism
B. Commensalism
C. Symbiosis
D. Hebitate
|
| 7 | Which factor is responsible for ecological imbalance. |
A. Over hunting
B. Change in water supply
C. Migration
D. All these
|
| 8 | Th graphical epresentation of tropihic relationship oforaganisms in an ecosystem is called. |
A. Food Chian
B. Ecological pyramid
C. Trophic level
D. Predation
|
| 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
|
Test Questions
