NSO Level 1- Science Olympiad (SOF) Class 8: Questions 208 - 212 of 1076

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Question number: 208

» Microorganisms

Edit
MCQ▾

Question

Medicines used to kill disease causing microbes without damaging our body are

Choices

Choice (4) Response

a.

Antigens

b.

Antibiotics

c.

Antibodies

d.

All of the above

Question number: 209

» Microorganisms

Edit
Match List-Ⅰ List-Ⅱ▾

Question

Match the microbes with their uses

List-Ⅰ (Microbes) List-Ⅱ (Uses)

(A)

Micro flora

(i)

Changing sugar to alcohol

(B)

Lactobacillus

(ii)

Curd formation

(C)

Rhizobium

(iii)

Helps in digestion

(D)

Yeast

(iv)

Helps in nitrogen fixing

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (ii)
  • (iii)
  • (i)
  • (iv)

b.

  • (iii)
  • (iv)
  • (ii)
  • (i)

c.

  • (iv)
  • (i)
  • (iii)
  • (ii)

d.

  • (iii)
  • (ii)
  • (iv)
  • (i)

Question number: 210

» Crop Production and Management

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MCQ▾

Question

Sheela’s grandmother applied castor oil on rice before storing in the drum. This is to

  1. Keep away the birds that eat the grains

  2. Keep away the rats that eat the grains

  3. Keep away the insects that eat the grains

  4. Protect the grains from spoilage

Choices

Choice (4) Response

a.

1 and 2

b.

3 and 4

c.

1 and 3

d.

2 and 3

Question number: 211

» Microorganisms

Edit
MCQ▾

Question

Which of the following food is preserved by deep freezing?

Choices

Choice (4) Response

a.

Cereals and pulses

b.

Pickles and salads

c.

Fruits and vegetables

d.

Jams and jellies

Question number: 212

» Conservation of Plants and Animals

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MCQ▾

Question

This can be considered as a reason for the extinction of endemic species

Choices

Choice (4) Response

a.

Introduction of new species in their habitat

b.

Increasing population

c.

Destruction of natural habitat

d.

All a. , b. and c. are correct

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