Metals and Non-Metals [NSO Level 1- Science Olympiad (SOF) Class 8]: Questions 1 - 6 of 85

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Question number: 1

» Metals and Non-Metals

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Question

Metals like iron, copper and aluminium are used to make cookware. Which Property of metals is used here?

Choices

Choice (4)Response

a.

Hardness

b.

Malleability

c.

Conductivity

d.

All a. , b. and c. are correct

Question number: 2

» Metals and Non-Metals

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Question

Metals are not used as handles in cook wares. Which property of metals is used here?

Choices

Choice (4)Response

a.

Metals are good conductors of heat and electricity

b.

Metals are hard

c.

Metals are malleable

d.

None of the above

Passage

Megha got a magnesium ribbon from the science lab. She burnt it, took the white ash and mixed it in water. Then she tested the solution with a litmus paper. Red litmus paper turned blue. She assumed that the ash is basic in nature.

Question number: 3 (1 of 3 Based on Passage) Show Passage

» Metals and Non-Metals

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Question

The white ash referred in the experiment is

Choices

Choice (4)Response

a.

Carbon dioxide

b.

Magnesium Oxide

c.

Magnesium carbonate

d.

Magnesium dioxide

Question number: 4 (2 of 3 Based on Passage) Show Passage

» Metals and Non-Metals

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Question

The chemical reaction that took place in the experiment was

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 5 (3 of 3 Based on Passage) Show Passage

» Metals and Non-Metals

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MCQ▾

Question

Which chemical property of metals is verified here?

Choices

Choice (4)Response

a.

Metals react with oxygen to form metallic oxides.

b.

Metallic oxides are basic in nature.

c.

Both a. and b. are correct

d.

None of the above

Question number: 6

» Metals and Non-Metals

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MCQ▾

Question

Iron grills and gates are painted well before rainy season. The reason behind this statement is

Choices

Choice (4)Response

a.

Statement c is the explanation of a and b

b.

Paint acts as a waterproof coating to protect iron from rusting.

c.

Paint is a water proof

d.

Iron undergoes rusting in presence of moisture

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