NSO Level 1- Science Olympiad (SOF) Class 10: Questions 968 - 970 of 986

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Question 968

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)

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 969

Question

MCQ▾

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

Question 970

Question

MCQ▾

Choose incorrect option for Image formed by Plane Mirror.

Choices

Choice (4)Response

a.

Laterally inverted

b.

Virtual and Erect

c.

The image formed is as for behind the mirror as the object is in front of it

d.

The size of image is Greater than of object

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