NSO Level 1- Science Olympiad (SOF) Class 8: Questions 205 - 210 of 1175

Access detailed explanations (illustrated with images and videos) to 1175 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access, Unlimited Time, on Unlimited Devices!

View Sample Explanation or View Features.

Rs. 450.00 -OR-

How to register? Already Subscribed?

Question 205

Question

MCQ▾

The organisms which are not visible to naked eye are called

Choices

Choice (4)Response

a.

Micro organisms

b.

Macro organisms

c.

Nano organisms

d.

Question does not provide sufficient data or is vague

Question 206

Question

MCQ▾

Common salt is used as a preservative in which of the following food items?

Choices

Choice (4)Response

a.

Jams and jellies

b.

Cereals and pulses

c.

Milk and milk products

d.

Meat and fish

Question 207

Question

MCQ▾

The proteins produced by human body to destroy the antigens are called

Choices

Choice (4)Response

a.

Antibodies

b.

Antigens

c.

Vaccines

d.

Agglutinin

Question 208

Question

MCQ▾

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 209

Question

Match List-Ⅰ List-Ⅱ▾

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 210

Question

MCQ▾

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

Developed by: