Metals and Non - Metals [NSO Level 1- Science Olympiad (SOF) Class 10]: Questions 8 - 12 of 60

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Question number: 8

» Metals and Non - Metals

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MCQ▾

Question

Zinc sulphate was taken in two test tubes. Iron and Copper were added in these tubes. After reaction colour of Zinc and aluminum is

Choices

Choice (4)Response

a.

Blue to colorless

b.

Blue and reddish brown

c.

Light green and Blackish Grey

d.

None of the above

Question number: 9

» Metals and Non - Metals

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MCQ▾

Question

What is not correct statement for ores?

Choices

Choice (4)Response

a.

Limonite is an calcium ore

b.

Mineral that contains high percentage of metal that can be extracted profitably from it.

c.

Ores are “rock ” that contain minerals and metallic compounds

d.

None of the above

Question number: 10

» 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)

Bronze

(i)

Electrical wire cables, sockets

(B)

Copper

(ii)

Silver coins

(C)

Aluminium

(iii)

Gears, ships propellers, bearings.

(D)

German silver

(iv)

Aircraft parts

Choices

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

a.

  • (ii)
  • (i)
  • (iv)
  • (iii)

b.

  • (iii)
  • (iv)
  • (i)
  • (ii)

c.

  • (i)
  • (iii)
  • (ii)
  • (iv)

d.

  • (iii)
  • (i)
  • (iv)
  • (ii)

Question number: 11

» Metals and Non - Metals

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MCQ▾

Question

Which is not an example of Roasting?

Choices

Choice (4)Response

a.

b.

c.

d.

All of the above

Question number: 12

» Metals and Non - Metals

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MCQ▾

Question

A mixture of Sodium and Sulphur is mixed with oxygen. In this reaction

Choices

Choice (4)Response

a.

Only Sulphur reacts oxygen

b.

Only Sodium reacts oxygen

c.

Sodium and Sulphur reacts oxygen

d.

None of the above

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