NSO Level 1- Science Olympiad (SOF) Class 10: Questions 818 - 822 of 986

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Question 818

Question

Match List-Ⅰ List-Ⅱ▾

Match both the columns and mark the correct option from the codes given below:

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

Lead

(i)

Railroad tracks, switching points

(B)

Tin

(ii)

X-ray tube

(C)

Tungsten

(iii)

Line white metal bearings

(D)

Manganese

(iv)

Printing industry

Choices

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

a.

  • (i)
  • (iii)
  • (ii)
  • (iv)

b.

  • (iv)
  • (iii)
  • (ii)
  • (i)

c.

  • (iv)
  • (i)
  • (ii)
  • (iii)

d.

  • (i)
  • (ii)
  • (iii)
  • (iv)

Question 819

Question

MCQ▾

Which of the following is not a double displacement reaction?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 820

Question

MCQ▾

If a horizontal straight conductor along the east west direction falls under gravity, then direction of the induced EMF is

Choices

Choice (4)Response

a.

East-North

b.

East-West

c.

West-South

d.

West-North

Question 821

Question

MCQ▾

A drop of liquid sample was put on the pH paper. The colour of the pH paper turned Yellow. The liquid sample could be that of

Choices

Choice (4)Response

a.

Dilute hydrochloric acid

b.

Distilled water

c.

Ethanoic acid

d.

Lemon juice

Question 822

Question

Match List-Ⅰ List-Ⅱ▾

Match both the columns and mark the correct option from the codes given below:

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

Nickel

(i)

Electronic agricultural materials

(B)

Chromium

(ii)

Aircraft turbine engines, nuclear power plants

(C)

Stainless steel

(iii)

Tools, surgical equipment.

(D)

Aluminium

(iv)

Electrical applications

Choices

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

a.

  • (iii)
  • (iv)
  • (i)
  • (ii)

b.

  • (ii)
  • (iii)
  • (i)
  • (iv)

c.

  • (i)
  • (iii)
  • (ii)
  • (iv)

d.

  • (iv)
  • (i)
  • (ii)
  • (iii)

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