NSO Level 1- Science Olympiad (SOF) Class 10: Questions 967 - 969 of 986

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Question number: 967

» Magnetic Effects of Electric Current

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MCQ▾

Question

Choose correct factor (s) affecting magnetic force on a current-carrying conductor in a magnetic field

Choices

Choice (4) Response

a.

Length of the wire

b.

Current flowing through the wire

c.

Strength of the magnetic field

d.

All a. , b. and c. are correct

Question number: 968

» Metals and Non - Metals

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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)

Nature

(i)

Non-metals are very brittle, and cannot be rolled into wires or pounded into sheets.

(B)

Hardness

(ii)

Metals have high density and are very heavy. Iridium and osmium have the highest densities whereas lithium has the lowest density.

(C)

Luster

(iii)

All metals are hard except sodium and potassium, which are soft and can be cut with a knife.

(D)

Density

(iv)

Metals have the quality of reflecting light from its surface and can be polished e. g. , gold, silver and copper.

Choices

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

a.

  • (i)
  • (iii)
  • (iv)
  • (ii)

b.

  • (iii)
  • (i)
  • (iv)
  • (ii)

c.

  • (iv)
  • (i)
  • (ii)
  • (iii)

d.

  • (iii)
  • (ii)
  • (iv)
  • (i)

Question number: 969

» Carbon and Its Componds

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MCQ▾

Question

Choose the correct option: Propene

(I) is produced from fossil fuels-petroleum, natural gas, and, to a much lesser extent, coal.

(II) is found in nature as a byproduct of vegetation and fermentation processes.

Choices

Choice (4) Response

a.

Only (II) is correct

b.

Only (I) is correct

c.

(I) and (II) are incorrect

d.

(I) and (II) are correct