Class 10 Practice - Level 3 -Metals and Non-Metals - Set 1

Total questions: 15

Identify the product(s) formed when Aluminium reacts with sodium hydroxide solution.

Topic: Reactivity Series

Aluminium hydroxide

Sodium aluminate and hydrogen gas

Aluminium oxide and sodium hydroxide

Sodium Aluminium oxide and water

None

Which of the following steps is involved in the extraction of copper from its Sulphide ore?

Topic: Extraction of Metals

Electrolysis of molten ore

Reduction with carbon

Roasting followed by reduction with carbon

Froth flotation followed by roasting

None

How does Sulphur dioxide act as a reducing agent in the reaction with potassium permanganate?

Topic: Chemical Properties of Non-Metals

By donating electrons to MnO₄⁻

By accepting electrons from MnO₄⁻

By forming sulphur trioxide

By reacting with water to form sulphuric acid

None

Which metal exhibits the highest electrical conductivity at room temperature?

Topic: Physical Properties of Metals

Copper

Silver

Gold

Aluminium

None

In the alloy brass, the percentage composition of copper is typically around:

Topic: Alloys

50%

60%

70%

80%

None

Which of the following metals will react with cold, dilute hydrochloric acid but not with concentrated nitric acid?

Topic: Reactivity Series

Magnesium

Zinc

Iron

Aluminium

None

When magnesium burns in the presence of nitrogen gas, it forms:

Topic: Chemical Properties of Metals

Magnesium nitride

Magnesium oxide

Magnesium nitrate

Magnesium hydroxide

None

The process of smelting is used to:

Topic: Extraction of Metals

Refine metals by electrolysis

Extract metals from their ores by heating

Separate metals from impurities by dissolving them in acid

Concentrate ores by flotation

None

Which of the following methods is not typically used to prevent iron from rusting?

Topic: Corrosion

Painting

Galvanization

Anodizing

Coating with plastic

None

10.

When phosphorus reacts with chlorine gas, it forms:

Topic: Chemical Properties of Non-Metals

Phosphorus trichloride

Phosphorus pentachloride

Phosphorus oxychloride

Phosphorus trioxide

None

11.

Which metal is used as a catalyst in the Haber process for the synthesis of ammonia?

Topic: Uses of Metals

Copper

Iron

Nickel

Platinum

None

12.

Which allotrope of carbon is used as a lubricant and why?

Topic: Physical Properties of Non- Metals

Diamond, due to its hardness

Graphite, due to its layered structure

Fullerene, due to its spherical shape

Carbon nanotubes, due to their strength

None

13.

Which metal, when in powdered form, burns with a white flame in air and forms a white ash?

Topic: Reactivity Series

Magnesium

Zinc

Copper

Iron

None

14.

In the extraction of Aluminium by electrolysis of alumina, the electrolyte used is:

Topic: Extraction of Metals

Molten cryolite

Molten bauxite

Aqueous sodium chloride

Aqueous copper sulphate

None

15.

Which non-metal is used as a semiconductor in electronic devices?

Topic: Uses of Non-Metals

Sulphur

Phosphorus

Silicon

Bromine

None

1 out of 15

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Class 10 Practice - Level 3 -Metals and Non-Metals - Set 1

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