Question # 1

Metals from a ____________ part of earth on which we live.

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Smaller

Larger

Medium

Nil

The earth is made up of ___________ % of calcium.

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4

5

6

7

Sodium - potassium alloy is used in nuclear reactor as a:

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catalyst

coolant

reactant

absorber

The colour of calcium metal flame is

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Golden yellow

Brilliant white

Brick red

Light green

Which of the following is less malleable?

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Sodium

Iron

Gold

Sliver

All are noble metals except:

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Silver

Gold

Hydrogen

Platinum

Which one is least oxidizing agent?

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F

CI

I

Br

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

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Hydrogen

Nitrogen

Sulphur

Phosphorus

Which one is least reactive non-metal?

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P

C

CI

F

Electropositive character depends upon:

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Atomic size

Nuclear charge

Ionization energy

Electron affinity

Which one of the following is the lightest metal?

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Calcium

Magnesium

Lithium

Sodium

All metals are solid except

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AI

Mg

Na

Hg

Oxygen is ___________

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Metals

Non-metals

Gas

b & c

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

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