Question # 1

Metal oxides are

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Amphoteric

Basic

Acidic

Neutral

Gold can only be dissolved by:

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Acids

Bases

Aqua Regia

Nil

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

The colour of calcium metal flame is

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Golden yellow

Brilliant white

Brick red

Light green

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

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catalyst

coolant

reactant

absorber

Electropositive character depends upon:

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Atomic size

Nuclear charge

Ionization energy

Electron affinity

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

The core of the earth is ____________ than crust.

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LIghter

Heavier

Both

Nil

Which of the following is less malleable?

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Sodium

Iron

Gold

Sliver

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

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Smaller

Larger

Medium

Nil

All metals are solid except

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AI

Mg

Na

Hg

Gold was used for utensils as early as ____________ BC.

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3400

3500

3600

3700

Which one of the following non-metal is lustrous?

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Sulphur

Phosphorus

Iodine

Carbon

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