MEDIUM
8th CBSE
IMPORTANT
Earn 100

Name any two diseases caused by bacteria.

Important Questions on Microorganisms: Friend and Foe

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 2 - Microorganisms: Friend and Foe>Exercise>Q 3
Name any two diseases caused by protozoa.
MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 2 - Microorganisms: Friend and Foe>Exercise>Q 1
Explain any two methods of food preservation. Also discuss advantage of food preservation.
MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 2 - Microorganisms: Friend and Foe>Exercise>Q 2
Draw a neat diagram to show nitrogen cycle and explain the process of nitrification and denitrification.
MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 2 - Microorganisms: Friend and Foe>Exercise>Q 3

Describe the principle on which the following method of food preservation is based:

Boiling

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 2 - Microorganisms: Friend and Foe>Exercise>Q 3

Describe the principle on which the following method of food preservation is based:

Canning

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 2 - Microorganisms: Friend and Foe>Exercise>Q 3

Describe the principle on which the following method of food preservation is based:

Freezing

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 2 - Microorganisms: Friend and Foe>Exercise>Q 3

Describe the principle on which the following method of food preservation is based:

Dehydration

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 2 - Microorganisms: Friend and Foe>Exercise>Q 4

What is vaccine?