Question # 1

Which one metal is least reactive?

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K

Fe

Cu

AI

The colour of calcium metal flame is

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Golden yellow

Brilliant white

Brick red

Light green

The earth is made up of ____________ % of aluminum.

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6

7

8

9

Silver is a ____________ metal.

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Pure

Noble

None

All

Which one of the following is brittle?

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Sodium

Aluminum

Selenium

Magnesium

The earth is made up of ___________ % of iron.

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4

5

6

7

Which of the following is less malleable?

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Sodium

Iron

Gold

Sliver

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

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Graphite

Phosphorus

Iodine

Diamond

Metal can form ions carrying charges:

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Uni-positive

Di-positive

Tri-Positive

All of them

Non-metals do not reaction with

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Strong bases

Concentrated acids

Dilute acids

Salts

All are noble metals except:

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Silver

Gold

Hydrogen

Platinum

Pure alkali metals can be cut simply by knife but iron cannot because of alkali metals have:

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Strong metallic bonding.

Weak metallic bonding

Non- metallic bonding

Moderate metallic bonding

The core of the earth is ____________ than crust.

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LIghter

Heavier

Both

Nil

Which one metal can be cut with a knife?

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Na

Mg

AI

Ca

Gold was used for utensils as early as ____________ BC.

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3400

3500

3600

3700

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