Question # 1

Which one of the following is brittle?

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Sodium

Aluminum

Selenium

Magnesium

Which of the following is less malleable?

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Sodium

Iron

Gold

Sliver

Which one metal is least reactive?

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K

Fe

Cu

AI

Which one of the following is the lightest metal?

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Calcium

Magnesium

Lithium

Sodium

Oxygen is ___________

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Metals

Non-metals

Gas

b & c

____________ Is drawn in wires.

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Gold

Silver

Helium

Nil

Silver is a ____________ metal.

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Pure

Noble

None

All

The colour of calcium metal flame is

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Golden yellow

Brilliant white

Brick red

Light green

Metals lose their electrons easily because:

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They are electronegative

They have electron affinity

They are electropositive

Good conductors of heat

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

Metal can form ions carrying charges:

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Uni-positive

Di-positive

Tri-Positive

All of them

Which one of the following will not react with dilute HCI?

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Sodium

Potassium

Calcium

Carbon

Which one is least oxidizing agent?

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F

CI

I

Br

The earth is made up of ___________ % of calcium.

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4

5

6

7

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