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General Science 8th Class English Medium Chapter 1 Online Test MCQs With Answers

Question # 1

The phenomenon which doe snot lead to global warming.

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Green hous effect

Ozone depletion

Deforestation

Photosynthesis

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Question # 2

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

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Solid pollutant

Air pollutant

Water pollutant

Acid Rain

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Question # 3

The organisms upon whihc a redator feeds are called.

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Prey

Carnivores

Herbivores

Producers

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Question # 4

A relationship where two species live together closely is called

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Symbiosis

Predation

Competitor

None of these

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Question # 5

Energy of ............ is trapped as chemicla energy by producers.

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Moon

Atom

Sun

Earth

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Question # 6

------------- gas is released when dead organisms are decomposed by the decomposers.

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Oxygen

Carbon dioxide

Nitrogen

Hydrogen

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Question # 7

------------- through the food chain is one of the most important functionsof an ecosystem in maintaining balance of nature.

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Waisting of energy

Destroy fo energy

Transfer of energy

Produce of energy

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Question # 8

Green house gases is

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Carbon di oxide

Methane

Oxides of nitrogen

All these

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Question # 9

Organism in ecologicla communits interact with one anothe rin....... major ways.

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Two

three

Four

Five

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Question # 10

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

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Upper

Lower

Middle

Inner

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Question # 11

A symbiotic relationship in whihc both speciesl get benefit is called.

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Commensalism

Hebitate

Mutualism

Symbiosis

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