Practice CBSE Class 8 Science Microorganisms Friend or Foe MCQs provided below. The MCQ Questions for Class 8 Chapter 2 Microorganisms Friend or Foe Science with answers and follow the latest CBSE/ NCERT and KVS patterns. 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 review the 50 questions and answers to strengthen understanding of core concepts in Chapter 2 Microorganisms Friend or Foe
Chapter 2 Microorganisms Friend or Foe MCQ Questions Class 8 Science with Answers
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
Free study material for Science
MCQs for Chapter 2 Microorganisms Friend or Foe Science Class 8
Students can use these MCQs for Chapter 2 Microorganisms Friend or Foe to quickly test their knowledge of the chapter. These multiple-choice questions have been designed as per the latest syllabus for Class 8 Science released by CBSE. Our expert teachers suggest that you should practice daily and solving these objective questions of Chapter 2 Microorganisms Friend or Foe to understand the important concepts and better marks in your school tests.
Chapter 2 Microorganisms Friend or Foe NCERT Based Objective Questions
Our expert teachers have designed these Science MCQs based on the official NCERT book for Class 8. We have identified all questions from the most important topics that are always asked in exams. After solving these, please compare your choices with our provided answers. For better understanding of Chapter 2 Microorganisms Friend or Foe, you should also refer to our NCERT solutions for Class 8 Science created by our team.
Online Practice and Revision for Chapter 2 Microorganisms Friend or Foe Science
To prepare for your exams you should also take the Class 8 Science MCQ Test for this chapter on our website. This will help you improve your speed and accuracy and its also free for you. Regular revision of these Science topics will make you an expert in all important chapters of your course.
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