Refer to CBSE Class 8 Science Microorganisms Friend or Foe MCQs provided below. CBSE Class 8 Science MCQs with answers available in Pdf for free download. The MCQ Questions for Class 8 Science with answers have been prepared as per the latest syllabus, CBSE books and examination pattern suggested in Class 8 by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 2 Microorganisms Friend or Foe are an important part of exams for Class 8 Science and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 8 Science and also download more latest study material for all subjects
MCQ for Class 8 Science Chapter 2 Microorganisms Friend or Foe
Class 8 Science students should refer to the following multiple-choice questions with answers for Chapter 2 Microorganisms Friend or Foe in Class 8. These MCQ questions with answers for Class 8 Science will come in exams and help you to score good marks
Chapter 2 Microorganisms Friend or Foe MCQ Questions Class 8 Science with Answers
Chapter 2
Microorganisms: Friend or Foe
Question. Diseases like polio and chicken pox are caused by _______
a) Bacteria
b) Fungi
c) Virus
d) Worms
Answer: C
Question. Examples of Multicellular Microorganism are
a) Algae, Bacteria
b) Bacteria and Fungi
c) Bacteria and Viruses
d) Algae and Fungi
Answer: D
Question. 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: B
Question. A common preservative used in jam and pickles is
a) Sodium benzoate
b) Nitric acid
c) Sodium Chloride
d) Copper Sulphate
Answer: A
Question. 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: C
Question. Lactobacillus is commonly found in
a) Cake
b) Curd
c) Bread
d) All of the above
Answer: B
Question. The process of conversion of sugar into alcohol by yeast is called
a) Fermentation
b) Pasteurisation
c) Alcoholism
d) All of the above
Answer: A
Question. . The pores in the bread is due to gas bubbles of
a) Oxygen
b) Nitrogen di oxide
c) Nitrogen
d) Carbon di oxide
Answer: D
Question. 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: C
Question. The microbe for Malaria is carried by
a) Male Anopheles mosquito
b) Female Anopheles Mosquito
c) Male Aedes mosquito
d) Female Aedes mosquito
Answer: C
Question: Microorganisms are
a) Multi-cellular
b) Unicellular
c) Unicellular and multi-cellular
d) None of the options
Answer: A
Question: Penicillium is a
a) Fungus
b) Algae
c) Bacteria
d) Yeast
Answer: A
Question: Malaria Is caused by
a) Protozoa
b) Virus
c) Algae
d) Bacteria
Answer: A
Question: Rhizobium becteria
a) Help in nitrogen fixation
b) Help in digestion
c) Cause diseases
d) All of these
Answer: B
Question: Scientist who discovered fermentation is
a) Louis pasteur
b) Alexander fleming
c) John mendal
d) Edward jenner
Answer: A
Question: Amoeba belongs to
a) Protozoa
b) Algae
c) Fungi
d) Virus
Answer: A
Question: Mushroom belongs to
a) Fungi
b) Algae
c) Virus
d) None of the options
Answer: C
Question: Amount of nitrogen in the atmosohere is
a) 0.78
b) 0.58
c) 0.68
d) 0.88
Answer: A
Question: Vaccine for small pox is discorvered by
a) Edward jenner
b) Louis pasteur
c) Alexander fleming
d) John mendal
Answer: A
Question: Spyrogyra is
a) A fungi
b) An algae
c) A protozoa
d) A bacteria
Answer: A
Question. In Pasteurisation the milk is heated to about:
(a) 100°C
(b) 50°C
(c) 70°C
(d) 110°C
Answer : C
Question. Scientist who discovered fermentation is
(a) Alexander Fleming
(b) Louis Pasteur
(c) John Mendal
(d) Edward Jenne
Answer : B
Question. What helps in the rise of bread or dosa dough?
(a) Heat
(b) Grinding
(c) Growth of yeast cells
(d) Low pressure
Answer : C
Question. Yeast is not used in the preparation of :
(a) bread
(b) alcohol
(c) dhokla
(d) antibiotic
Answer : D
Question. Which of the following enzymes is secreted by bacteria that can digest cellulose?
(a) Amylase
(b) Cellulase
(c) Lipase
(d) Protease
Answer : B
Question. Examples of Multicellular Microorganism are
(a) Algae, Bacteria
(b) Bacteria and Fungi
(c) Bacteria and Viruses
(d) Algae and Fungi
Answer : D
Question. Virus reproduce:
(a) only outside the cells of the host organisms
(b) only inside the cells of the host organisms
(c) both inside and outside the cells of the host organisms
(d) none of these
Answer : B
Question. A plant disease called citrus canker is caused by a _________ .
(a) Virus
(b) Protozoa
(c) Bacteria
(d) Fungi
Answer : C
Question. What process takes place when yeast is added to grape juice and left for a week?
(a) Decomposition
(b) Fermentation
(c) Distillation
(d) Oxidation
Answer : B
Question. Malaria is spread by:
(a) plasmodium
(b) female anapheles mosquito
(c) male anapheles mosquito
(d) none of these
Answer : B
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CBSE Class 8 Science Chapter 2 Microorganisms Friend or Foe MCQs
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Chapter 2 Microorganisms Friend or Foe MCQs Science CBSE Class 8
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Chapter 2 Microorganisms Friend or Foe CBSE Class 8 MCQs Science
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CBSE MCQs Science Class 8 Chapter 2 Microorganisms Friend or Foe
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