NSO Level 1- Science Olympiad (SOF) Class 10: Questions 830 - 835 of 986

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Question 830

Question

MCQ▾

Rancidity can be prevented by

Choices

Choice (4)Response

a.

Adding antioxidants to oily food-stuff

b.

Packing of food materials in air tight containers

c.

Refrigeration of cooked food at low temperature

d.

All a., b. and c. are correct

Question 831

Question

MCQ▾

For a plane mirror, magnification

Choices

Choice (4)Response

a.

1

b.

0

c.

d.

Question 832

Question

MCQ▾

An element reacts with oxygen. During this reactions, it produces a light blue flame. This compound is also insoluble in water. The elements is likely to be

Choices

Choice (4)Response

a.

Copper

b.

Iron

c.

Nickle

d.

Zinc

Question 833

Question

MCQ▾

Choose incorrect method of waste disposal

Choices

Choice (4)Response

a.

Recycling

b.

Land fillings

c.

Biogas plant

d.

All a., b. and c. are correct

Question 834

Question

MCQ▾

A long current carrying wire PQ is free to move when placed in a magnetic field B at right angles to the wire, as shown. Then

Choices

Choice (4)Response

a.

It will move upwards, downwards the observer

b.

It will move along the magnetic field to the right

c.

It will not move at all

d.

It will move downward, away from the observer

Question 835

Question

Match List-Ⅰ List-Ⅱ▾

Match column I and column II and select the correct option from the codes given below.

List-Ⅰ (Column I)List-Ⅱ (Column II)
(A)

Carnivores

(i)

Tiger

(B)

Parasites

(ii)

Goat

(C)

Herbivores

(iii)

Lice

(D)

Omnivores

(iv)

Human

Choices

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

a.

  • (iii)
  • (ii)
  • (iv)
  • (i)

b.

  • (iv)
  • (ii)
  • (iii)
  • (i)

c.

  • (iii)
  • (ii)
  • (i)
  • (iv)

d.

  • (i)
  • (iii)
  • (ii)
  • (iv)

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