MCQ of chapter 2 science class 8 microorganism :Friend and foe
1. Alcohol is produced with the help of
(a) sodium chloride (b) yeast
(c) nitrogen (d) carbon dioxide
ANS - yeast
2. Which of the following drug is antipyritic ?
(a) Insulin (b) Alcohol
(c) streptomycin (d) Paracetamol
ANS - paracetamol
3. What helps in the rise of bread or dosa dough?
(a) Heat (b) Grinding
(c) Growth of yeast cells (d) Low pressure
ANS - Growth of yeast cells
4. The status of algae in the aquatic food chain is
(a) consumers (b) producer
(c) host (d) small in size
ANS - producer
5. Which microorganism causes AIDS?
(a) protozoa (b) bacteria
(c) virus (d) An algae
ANS - protozoa
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