NSO Level 1- Science Olympiad (SOF) Class 10: Questions 817 - 820 of 986

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Question number: 817

» Light - Reflection and Refraction

Edit
Match List-Ⅰ List-Ⅱ▾

Question

Match the column I and column II for Image formation by a concave mirror and the select the correct option from the coded given below:

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

At infinity

(i)

Formed between O and

(B)

At the center

(ii)

Between O and

(C)

Between O and Infinity

(iii)

Formed at

(D)

Between O and F

(iv)

At infinity

Choices

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

a.

  • (iii)
  • (iv)
  • (i)
  • (ii)

b.

  • (iv)
  • (i)
  • (iii)
  • (ii)

c.

  • (i)
  • (ii)
  • (iii)
  • (iv)

d.

  • (ii)
  • (iv)
  • (i)
  • (iii)

Question number: 818

» Metals and Non - Metals

Edit
Match List-Ⅰ List-Ⅱ▾

Question

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 number: 819

» Chemical Reactions and Equation

Edit
MCQ▾

Question

Which of the following is not a double displacement reaction?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 820

» Light - Reflection and Refraction

Edit
MCQ▾

Question

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