NSO Level 1- Science Olympiad (SOF) Class 10: Questions 930 - 935 of 986

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Passage

Directional: Read the passage carefully and the answer the below two question

The angle of incidence of a light ray incident through air on the boundary separating air from water so that the angle of refraction is 30°.

Refractive index of air is and that of water is

Question number: 930 (1 of 2 Based on Passage) Show Passage

» Light - Reflection and Refraction

Edit
MCQ▾

Question

What should be the angle of incidence of a light ray incident through air on the boundary separating air from water so that the angle of refraction is

Choices

Choice (4) Response

a.

b.

c.

d.

40.7°

Question number: 931 (2 of 2 Based on Passage) Show Passage

» Light - Reflection and Refraction

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MCQ▾

Question

Angle of incidence means

Choices

Choice (4) Response

a.

The angle between an incident ray and the normal

b.

The angle between an incident ray and refracted ray

c.

The angle between a refracted ray and the normal

d.

All of the above

Question number: 932

» Metals and Non - Metals

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MCQ▾

Question

Given

The Most reactive metal is

Choices

Choice (4) Response

a.

Cu

b.

Ag

c.

Mg

d.

Zn

Question number: 933

» Metals and Non - Metals

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MCQ▾

Question

Given

The Least reactive metal is

Choices

Choice (4) Response

a.

Cu

b.

Fe

c.

Sn

d.

Na

Question number: 934

» Carbon and Its Componds

Edit
Match List-Ⅰ List-Ⅱ▾

Question

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

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

Crystalline

(i)

Alkaline

(B)

Amorphous

(ii)

Charcoal

(C)

Oxidation

(iii)

Graphite

(D)

Combustion

(iv)

Carbon Dioxide

Choices

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

a.

  • (i)
  • (iii)
  • (ii)
  • (iv)

b.

  • (iii)
  • (iv)
  • (i)
  • (ii)

c.

  • (i)
  • (iii)
  • (iv)
  • (ii)

d.

  • (iii)
  • (ii)
  • (i)
  • (iv)

Question number: 935

» Sources of Energy

Edit
MCQ▾

Question

Which is incorrect for advantages of biogas?

Choices

Choice (4) Response

a.

No smoke

b.

All are correct

c.

No ash

d.

Low supply of heat