Question # 1

Non-metals do not reaction with

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Strong bases

Concentrated acids

Dilute acids

Salts

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

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catalyst

coolant

reactant

absorber

The core of the earth is mostly made from ____________

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Nickel

Iron

A % B

Copper

Metal oxides are

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Amphoteric

Basic

Acidic

Neutral

Electropositive character depends upon:

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Atomic size

Nuclear charge

Ionization energy

Electron affinity

Which one is least oxidizing agent?

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F

CI

I

Br

Metals lose their electrons easily because:

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They are electronegative

They have electron affinity

They are electropositive

Good conductors of heat

Which one of the following non-metal is lustrous?

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Sulphur

Phosphorus

Iodine

Carbon

Which one of the following metals burns with a brick red flame?

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Sodium

Magnesium

Iron

Calcium

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

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Hydrogen

Nitrogen

Sulphur

Phosphorus

Which one metal can be cut with a knife?

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Na

Mg

AI

Ca

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

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Smaller

Larger

Medium

Nil

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

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Sodium

Potassium

Calcium

Carbon

All non-metals are non-conductor of heat and electricity except it

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Phosphorous

Sulphur

Graphite

Iodine

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

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Graphite

Phosphorus

Iodine

Diamond

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