Class 8 Science – Chapter 2
Microorganisms: Friend and Foe
MCQs (Exam Level)
-
Microorganisms can be seen with the help of a
A) Telescope
B) Microscope
C) Binocular
D) Magnifying glass
Answer: B -
Which of the following is NOT a microorganism?
A) Bacteria
B) Virus
C) Algae
D) Ant
Answer: D -
The microorganism used in the preparation of curd is
A) Yeast
B) Virus
C) Lactobacillus
D) Algae
Answer: C -
Malaria is caused by
A) Virus
B) Bacteria
C) Protozoa
D) Fungi
Answer: C -
Which disease is caused by bacteria?
A) Dengue
B) Tuberculosis
C) Polio
D) Chickenpox
Answer: B -
Antibiotics should not be taken
A) Without doctor's advice
B) When prescribed
C) For bacterial diseases
D) In proper dose
Answer: A -
Which gas is released during fermentation?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
Answer: C -
The process of heating milk to kill harmful microorganisms is called
A) Fermentation
B) Pasteurization
C) Preservation
D) Vaccination
Answer: B -
Which of the following helps in nitrogen fixation?
A) Virus
B) Rhizobium
C) Yeast
D) Algae
Answer: B -
Food poisoning is caused due to
A) Fresh food
B) Overcooked food
C) Contaminated food
D) Dry food
Answer: C
📌 Exam Ready MCQs | NCERT + CBSE Pattern
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