Question # 1

____________ are good conductors of electricity.

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Covalent compound

Metals

Both

None of these

1 torr = ?

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1 mm of Hg

1 atm

760 mm of Hg

1 pascal

By electrolytic refining of copper , it is ____________ % pure.

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98

99

99.99

100

................. can be decomposed into simpler substanmce.

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Compound

Element

Solution

Mixture

Mass per unit volume is:

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Velocity

Dencity

Pressure

Nil

Electrolyte is ____________ solid form.

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in

Sometimes in

Never in

Always in

___________ is used in treatment of cancer.

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Cobalt-60

C-12

H-3

Nil

The forces of attraction present between the molecules of a substance are called ____________ forces.

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Intermolecular forces

Covalent

Ionic

Nil

Bronze (alloy) is a ____________

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Slolution

Mixture

a & b

Nil

Graphite is ___________

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Hard

Nil

Soft

Nil

________________ orbital is more complex in shape.

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s

p

f

d

The base of modern periodic table is

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Atomic number (Z)

Mass number (A)

Avogadro's Number

Quantum Number

"Atoms" means _________

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Divisible

Indivisible

Break

Nil

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