Question # 1

A bond formed between two non metals is expected to be

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Ionic

Coordinate covalent

Metallic

Covalent

Which element is the most reactive element?

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Florine

Oxygen

Chlorine

Nitrogen

The mass number of sodium is.

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19

31

27

23

What does keep the particles present in the nucleus intact.

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Particles are held together by dipolar force

Particles are held together by wee nuclear force

Particles are held together by strong nuclear force

Particles are held together by electrostatic force

Silicon belongs to Grou IVA . It has ....electons in the valence shell

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2

6

3

4

Which of the following bond s is expected to b the weakest.

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Cl-Cl^-

C-C

F-F

O -O

Elments re classified into four blocks depending upon

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Shell

Atomic mass

Sub -Shell

Atomic Number

Bond dissociation for O2 is

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505 kJ/mol

705 kJ/mol

605 kJ/mol

498 kJ/mol

In whcih state of matter does not hae definite shape and volume.

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Liquid

Gas

Solid

All of these

How many state of matter exist.

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One

Two

Three

Four

Macroscopic propertues are properties that can be visualized by

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Telescope

The naked eye

Microscope

Electron microscope

During the formation of ionic bond heat is.

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Remains same

Absorbed

Released

Both a and b

Elements with atomic no .58 to 71 are called.

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Actinides

Lanthanides

Both a and b

None of these

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