Question # 1

Which one of the following is brittle?

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Sodium

Aluminum

Selenium

Magnesium

Which one of the following is the lightest metal?

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Calcium

Magnesium

Lithium

Sodium

Non-metals are generally soft, but which one of the following is extremely hard?

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Graphite

Phosphorus

Iodine

Diamond

The colour of calcium metal flame is

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Golden yellow

Brilliant white

Brick red

Light green

Halogens with metals for

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Ionic bond

Covalent bond

Dative covalent bond

Metallic bond

The earth is made up of ___________ % of calcium.

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4

5

6

7

Which one is moderate reactive metal?

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Pb

Na

Ca

Mg

Gold was used for utensils as early as ____________ BC.

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3400

3500

3600

3700

Sodium is exterminate reactive metal, but it does not react with:

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Hydrogen

Nitrogen

Sulphur

Phosphorus

The earth is made up of ____________ % of aluminum.

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6

7

8

9

Metals lose their electrons easily because:

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They are electronegative

They have electron affinity

They are electropositive

Good conductors of heat

Which one metal is least reactive?

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K

Fe

Cu

AI

All metals are solid except

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AI

Mg

Na

Hg

Which one is least oxidizing agent?

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F

CI

I

Br

The core of the earth is ____________ than crust.

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LIghter

Heavier

Both

Nil

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9th Class Chemistry Chapter 8 Chemical Reactivity English Medium KPK Boards Online Mcqs MCQs With Answers

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