Question # 1

Hydrogen has ________________ isotopes.

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1

2

3

4

Which is kept constant in the Charle's law:

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Pressure

Temperature

Volume

Mass

________________ elements were discovered in year 1800.

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34

35

36

37

Effusion is a property of:

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Gases

LIquids

Solids

Plasma

Neuron was discovered by

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Sir Willium Crooks

Goldstein

James Chadwik

Neil Bohr

1 atm = ?

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1 pascal

760 mm of Hg

1 atm

1 Nm^-2

Industrial chemistry deals with the manufacturing of compounds:

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in the laboratory

on micro scale

on commercial scale

on economic scale

Which radioisotope is used for the diagnosis of tumor in the body?

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cobalt-60

iodine-131

strontium-90

phosphorus-30

____________ of copper is done by electrolysis.

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Production

Refining

Both

Nil

Which of the following can accommodate 18 electrons?

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K

L

M

N

The repetition of a property after a certain interval is:

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Periodicity

Properties

Periodicity of properties

None

Which one of the following is heterogeneous mixture?

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milk

ink

milk of magnesia

sugar solution

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

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Sodium

Potassium

Calcium

Carbon

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