MCQ Microorganisms: Friend and Foe Chapter 2 Class 8 Science

1. Alcohol is produced with the help of

sodium chloride

yeast

nitrogen

carbon dioxide

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Question 1 of 15

2. Which of the following drug is an antipyretic?

Insulin

Alcohol

Streptomycin

Paracetamol

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Question 2 of 15

3. What helps in the rise of bread or dosa dough?

Heat

Grinding

Growth of yeast cells

Low pressure

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Question 3 of 15

4. The status of algae in the aquatic food chain is

consumers

producers

host

small in size

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Question 4 of 15

5. The rod shaped bacteria are called

Bacillus

Coccus

Vibrio

Spirillum

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Question 5 of 15

6. Bacteria present in root nodules of pea

Coli

Plasmodium

Rhizobium

Penicillin

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Question 6 of 15

7. The microorganism which contains chlorophyll

Virus

Fungus

Algae

All

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Question 7 of 15

8. The disease caused by protozoa is

tuberculosis

polio

typhoid

malaria

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Question 8 of 15

9. Which can fix atmospheric nitrogen in the soil?

Rhizobium

Clostridium

Azotobacter

All of the above

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Question 9 of 15

10. The disease caused by fungi is

measles

chicken pox

polio

ringworm

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Question 10 of 15

11. Which bacteria helps in settling of curd?

Rhizobium

Lactobacillus

Vibriocholarae

Bacillus

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Question 11 of 15

12. Which microorganism causes AIDS?

A protozoa

A bacteria

A virus

An algae

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Question 12 of 15

13. Which of the following disease is spread due to bacteria?

Tuberculosis

Measles

Chicken pox

Polio

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Question 13 of 15

14. Which of the following is not used as food preservatives?

Salt

Sugar

Vinegar

Methane

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Question 14 of 15

15. The process by which amount of nitrogen remains the same in the atmosphere is known as

fermentation

carbon cycle

nitrogen cycle

photosynthesis

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Question 15 of 15