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CBSE
Class 8 Science
Microorganisms: Friend And Foe
Quiz 2
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Which microorganism causes AIDS?
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A protozoa
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A bacteria
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A virus
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An algae
Explanation
A virus
Which of the following disease is spread due to bacteria?
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Tuberculosis
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Measles
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Chicken pox
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Polio
Explanation
Tuberculosis
Which of the following is not used as food preservatives?
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Salt
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Sugar
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Vinegar
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Methane
Explanation
Methane
The process by which amount of nitrogen remains the same in the atmosphere is known as
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fermentation
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carbon cycle
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nitrogen cycle
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photosynthesis
Explanation
nitrogen cycle
0 h : 0 m : 1 s
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