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Class 8 Biology: Microorganisms: Friend and Foe — Chapter Test 1

Class 8 • Biology • Microorganisms: Friend and Foe • Chapter Test

MediumFREE

15

Questions

20 min

Duration

15

Marks (1 each)

No

Negative marking

Original practice questions with full solutions by ExamPortal.

Instructions

  • • Read each question carefully and pick the correct answer.
  • • You can mark questions for review and come back to them.
  • • Answers are saved automatically.
  • • The test is submitted automatically when time runs out.

Access

This test is completely free.

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SYLLABUS & QUESTION BLUEPRINT

Sample Practice Questions

Preview 5 sample questions from this 15-question test. Test your knowledge below or take the full exam in timed CBT mode.

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Question 1 of 15
Organisms too small to be seen with the naked eye are called:
A
insects
B
microorganisms
C
plants
D
fish
View Correct Answer & Step-by-Step Solution
Correct Option:(B)microorganisms

Detailed explanation is available inside the official test attempt review.

Question 2 of 15
Curd is formed from milk by:
A
yeast
B
Lactobacillus bacteria
C
virus
D
algae
View Correct Answer & Step-by-Step Solution
Correct Option:(B)Lactobacillus bacteria

Detailed explanation is available inside the official test attempt review.

Question 3 of 15
Yeast is used in making bread because it produces:
A
oxygen
B
carbon dioxide
C
nitrogen
D
salt
View Correct Answer & Step-by-Step Solution
Correct Option:(B)carbon dioxide

Detailed explanation is available inside the official test attempt review.

Question 4 of 15
The conversion of sugar into alcohol by yeast is called:
A
photosynthesis
B
fermentation
C
respiration only
D
digestion
View Correct Answer & Step-by-Step Solution
Correct Option:(B)fermentation

Detailed explanation is available inside the official test attempt review.

Question 5 of 15
Penicillin was discovered by:
A
Louis Pasteur
B
Alexander Fleming
C
Edward Jenner
D
Robert Koch
View Correct Answer & Step-by-Step Solution
Correct Option:(B)Alexander Fleming

Detailed explanation is available inside the official test attempt review.

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Frequently asked questions

How many questions are there in Class 8 Biology: Microorganisms: Friend and Foe — Chapter Test 1?

There are 15 questions to answer in 20 min. Each correct answer gives 1 mark, for a total of 15 marks.

Is there negative marking?

No. Wrong answers do not lose marks, so attempt every question.

Is this mock test free?

Yes, it is completely free. Just log in with your email to start.

What does this test cover?

It covers the chapter "Microorganisms: Friend and Foe" of Class 8 Biology. All questions are original, with a full solution for each.

Will I see my result and the solutions?

Yes. Right after you submit you get your score, accuracy, rank and percentile, and you can review every question with the correct answer and a step-by-step explanation.

Can I take this test again?

Yes, you can retake it as many times as you like and compare your scores.