Class 8 Science – Chapter 2
Microorganisms: Friend and Foe
Multiple Choice Questions (MCQs)
-
Which of the following is a microorganism?
a) Ant b) Frog c) Bacteria d) Earthworm -
Which microorganism is used in making curd?
a) Virus b) Algae c) Bacteria d) Protozoa -
Which of the following diseases is caused by bacteria?
a) Malaria b) Dengue c) Tuberculosis d) Chickenpox -
The microorganism that causes malaria is:
a) Bacteria b) Virus c) Protozoa d) Algae -
Which microorganism helps in nitrogen fixation?
a) Virus b) Bacteria c) Fungi d) Protozoa -
Which of the following is NOT a method of food preservation?
a) Salting b) Drying c) Boiling daily d) Freezing -
Which chemical is used as a food preservative?
a) Sugar b) Salt c) Sodium benzoate d) Water -
Which disease is spread by mosquitoes?
a) Cholera b) Malaria c) Typhoid d) Tuberculosis -
Pasteurization is mainly used for:
a) Fruits b) Vegetables c) Milk d) Meat -
Which microorganism is used in baking bread?
a) Bacteria b) Virus c) Algae d) Yeast
📌 Next: Chapter 2 – Worksheet & Answers
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