A C Sehgal Solutions for Exercise 2: ORAL QUESTIONS

Author:A C Sehgal

A C Sehgal Science Solutions for Exercise - A C Sehgal Solutions for Exercise 2: ORAL QUESTIONS

Attempt the practice questions from Exercise 2: ORAL QUESTIONS with hints and solutions to strengthen your understanding. Living Science 8 solutions are prepared by Experienced Embibe Experts.

Questions from A C Sehgal Solutions for Exercise 2: ORAL QUESTIONS with Hints & Solutions

HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 2 - Microorganisms>ORAL QUESTIONS>Q 1

While making cake or dhokla, the dough rises because of a substance that is produced during fermentation. What substance is this? Why does it cause the dough to rise? 

HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 2 - Microorganisms>ORAL QUESTIONS>Q 2

To prevent a disease caused by a certain microbe, doctors inject the same microbes in a person’s blood. How is it ensured that this prevents the disease instead of causing it? What is this process of injecting microbes called?

HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 2 - Microorganisms>ORAL QUESTIONS>Q 3

Microbes that live inside the bodies of animals normally cause diseases. However, some of them also help animals. Give an example to prove this point.

HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 2 - Microorganisms>ORAL QUESTIONS>Q 4

Pasteurisation means boiling the milk to kill germs. Do you agree? Give reasons.