NSO Level 1- Science Olympiad (SOF) Class 10: Questions 597 - 600 of 986

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Question number: 597

» Sources of Energy

Edit
MCQ▾

Question

Fill Blank space.

Solar cell are made by ________ semiconductor

Choices

Choice (4) Response

a.

Silicon

b.

Germanium

c.

Any of the above

d.

Gallium

Question number: 598

» Light - Reflection and Refraction

Edit
MCQ▾

Question

Read the given statement and mark the correct option.

Statement 1: Refractive index is defined as the ratio of velocity of light in vacuum to the velocity of light in a substance at same wavelength

Statement 2: If refractive index of one medium is equal to refractive index of second medium, then beam does not bend at all

Choices

Choice (4) Response

a.

Only statement 2 is correct

b.

Statements 1 and 2 are incorrect

c.

Only statement 1 is correct

d.

Statements 1 and 2 are correct

Question number: 599

» Metals and Non - Metals

Edit
MCQ▾

Question

Which is not an example of Roasting?

Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

Question number: 600

» Chemical Reactions and Equation

Edit
Match List-Ⅰ List-Ⅱ▾

Question

Match both the column and mark the correct option from the codes given below.

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

(i)

Combination

(B)

(ii)

Oxidation

(C)

(iii)

Displacement

(D)

(iv)

Decomposition

Choices

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

a.

  • (ii)
  • (i)
  • (iii)
  • (iv)

b.

  • (iii)
  • (iv)
  • (i)
  • (ii)

c.

  • (iv)
  • (iii)
  • (ii)
  • (i)

d.

  • (iii)
  • (i)
  • (iv)
  • (ii)