Question # 1

Non-metals do not reaction with

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Strong bases

Concentrated acids

Dilute acids

Salts

___________ is used in treatment of cancer.

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Cobalt-60

C-12

H-3

Nil

Density of a gas increases, when its:

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temperature is increased

pressure is increased

volume is kept constant

none of these

Intermolecular forces are of three types and are collectively called ____________

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Nelson' forces

Vander Waal's forces

Neurons

Nil

Which one is not a tetraatomic molecular?

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H2O

H2O2

SO3

BCL3

Addition of OXYGEN is called.

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Reduction

Conduction

Oxidation

Nil

According to Bohr, electrons can revolve only in this orbits whose angular momentum is

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h/2π

n 2h/π

n h2/2π

n h/2π

H2O is what type of molecules it is:

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Manoatomic

Polyatomic

Pentaatomic

Nil

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

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catalyst

coolant

reactant

absorber

In 9th century scientist accepted by:

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Dalton

Bohars

Rutherford

Nil

All metals are solid except

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AI

Mg

Na

Hg

_________ which occupies space and have mass.

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Matter

Atom

Molecule

All of above

The formula of benzene is _________

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C6H6O3

C6H6

C12H22

Nil

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