Question # 1

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

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Graphite

Iodine

Diamond

Phosphorus

Metals can form ions carrying charges.

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Uni Positive

Di positive

Tri positive

All of these

Group 17 elements are called

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Alkali Metals

Halogens

Noble gases

Alkaline Earth Metals

Metals oxides are .

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Neutral

Acidic in nature

Basic in nature

All of these

Which one of the following non -metal is lustrous.

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Sulphur

Carbon

Iodine

Phosphrous

Non metallic oxides are.

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Basic in nature

Acidic in nature

Amphoteric

All of these

Which compunddo you expet the be coloured.

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KCl

NiCl2

BaCl2

Al Cl2

X is a monotic gas, which statement about this is correct

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X burns in air

X is coloured

X wil displace iodine from it

X is unreactive

Element of which group are all coloured.

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Second group

Fourth group

Sixth group

Fifth group

The non -metal which is present in group -15 of periodic table.

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Nitrogen

Iodine

Carbon

Sulphur

Which one of the following is the lightest metal

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Lithium

Calcium

Magnisium

Sodium

In which element there exists the strongest foreces of attraction beween atoms.

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Mg

Ca

Ba

Sr

Which oxide is themost basic oxide.

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Na2O

MgO

Li2O

CO

The heaviest metal is

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Lead

Iron

Osmium

Platinum

Which are good conductor of heat and electricity.

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Non metals

Metaalloids

Metals

All of these

Which non metal is good conductor of electricity

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Graphite

Iodine

Sulphur

Phosphorus

Which element has high electronegativetivity Value.

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Chlorine

Oxygen

Fluorine

Nitrogen

Whcih one of the following is brittle.

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Sodium

Aluminum

Selenium

Magnesium

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