Question # 1

The core of the earth is ____________ than crust.

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LIghter

Heavier

Both

Nil

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

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Graphite

Phosphorus

Iodine

Diamond

Which one of the following metals burns with a brick red flame?

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Sodium

Magnesium

Iron

Calcium

Which one of the following is brittle?

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Sodium

Aluminum

Selenium

Magnesium

Electropositive character depends upon:

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Atomic size

Nuclear charge

Ionization energy

Electron affinity

The earth is made up of ___________ % of iron.

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4

5

6

7

Which one is the following belongs no Noble Gases?

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O

F

Ne

Nil

Which one is least reactive non-metal?

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P

C

CI

F

____________ Is drawn in wires.

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Gold

Silver

Helium

Nil

Silver is a ____________ metal.

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Pure

Noble

None

All

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

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Hydrogen

Nitrogen

Sulphur

Phosphorus

Oxygen is ___________

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Metals

Non-metals

Gas

b & c

All are noble metals except:

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Silver

Gold

Hydrogen

Platinum

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Chemistry 9th Class English Medium Unit 8 Online Test MCQs With Answers

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