Question # 1

When new bonds ae formed, the energy is

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Consume

Remain same

Release

None of these

Which metal has the lowest melting point?

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Li

Na

Rb

K

Covalent Bond involves the

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Sharing of electrons

Repulsion of electrons

Acceptance of electrons

Donation of electrons

When we move form left to right in a period, atomic number

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Decreases

Increases

First increases then decreases

None of the above

The branch of chemistry that focuses on the study of polymers, their types properties, uses is called.

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Industrial chemistry

Polymer chemistry

Organic chemistry

Astrochemistry

Acid rain has pH less than.

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6

7

7.4

5.6

What information was obtained fom discharge tube expriments?

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Electrons and protons were discovered

Structur eof atom was discovered

Neutrons and protons were discovered

Presence of nucleus in an atom was discovered

When old bonds are broken, the energy is.

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Release

Remain same

Consume

None of these

/which of the followign elements is presnt in group IA.

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Lithium

Hydrogen

Sodium

All of these

Which ionic compound has the highest melting point.

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RbCl

KCl

LiCl

NaCl

A substance whcih can behave as an acid as well as a base is called

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Amphoteric specie

Acid

Base

Neutral specie

John Dalton put forward his atomic theory.

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1800

1803

1805

1903

Matter can be described by both is

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Chemical Properties

Physical Properties

Physical propeties and chemcial properties

None of these

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