Free PDF Download of CBSE Science Multiple Choice Questions for Class 8 with Answers Chapter 2 Microorganisms: Friend and Foe. Science MCQs for Class 8 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 8 Science Microorganisms: Friend and Foe MCQs Pdf with Answers to know their preparation level.
Microorganisms: Friend and Foe Class 8 Science MCQs Pdf
1. Diseases like polio and chicken pox are caused by _______
a) Bacteria
b) Fungi
c) Virus
d) Worms
Answer
Answer: (c)
2. Examples of Multicellular Microorganism are
a) Algae, Bacteria
b) Bacteria and Fungi
c) Bacteria and Viruses
d) Algae and Fungi
Answer : (d)
3. Some medicines obtained from micro-organisms are applied to kill or stop the growth of disease-causing microorganisms. Such medicines are called ______.
a) Antibodies
b) Antibiotics
c) Antiseptics
d) All of the above
Answer
Answer: (b)
4. A common preservative used in jam and pickles is
a) Sodium benzoate
b) Nitric acid
c) Sodium Chloride
d) Copper Sulphate
Answer
Answer: (a)
5. Rhizobium found in root nodules of leguminous roots is an
a) Atmospheric Carbon fixer
b) Atmospheric Oxygen fixer
c) Atmospheric Nitrogen fixer
d) All of the above
Answer
Answer: (c)
6. Lactobacillus is commonly found in
a) Cake
b) Curd
c) Bread
d) All of the above
Answer
Answer: (b)
7. The process of conversion of sugar into alcohol by yeast is called
a) Fermentation
b) Pasteurisation
c) Alcoholism
d) All of the above
Answer
Answer: (a)
8. The pores in the bread is due to gas bubbles of
a) Oxygen
b) Nitrogen di oxide
c) Nitrogen
d) Carbon di oxide
Answer
Answer: (d)
9. Deliberately injecting weak microbes into a healthy body and producing antibodies to fight against strong microbes is called _______
a) Medication
b) Antibiotics
c) Vaccination
d) All of the above
Answer
Answer: (c)
10. The microbe for Malaria is carried by
a) Male Anopheles mosquito
b) Female Anopheles Mosquito
c) Male Aedes mosquito
d) Female Aedes mosquito
Answer
Answer: (b)
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