Question # 1

Along the period which one of the following decrease:

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Atomic radius

ionization energy

electron affinity

electronegative

Which one of the following is a galvanic cell?

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Daniel cell

Nelson's cell

Down's cell

Both B and C

Carbon exists in ________________ allotropic forms.

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1

2

3

4

Atoms form chemical bonds to attain the electronic configuration of

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Halogens

Noble gases

Alkali metals

Alkaline earthmetals

________________ orbital is more complex in shape.

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s

p

f

d

Sodium is exterminate reactive metal, but it does not react with:

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Hydrogen

Nitrogen

Sulphur

Phosphorus

Intermolecular forces are of three types and are collectively called ____________

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Nelson' forces

Vander Waal's forces

Neurons

Nil

In peroxides, the oxidation no. of O is

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+1

-1

+3

-3

How many time liquids are denser than gases?

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100 times

1000 times

10,000 times

100,000 times

Density of a gas increases, when its:

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temperature is increased

pressure is increased

volume is kept constant

none of these

Water dissolves ____________ compound.

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Ionic

Polar covalent

A & B

Nil

Which one of the following is not an electrolytic cell:

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Down cell

Galvanic cell

Nelson' cell

Both a and c

All non-metals are non-conductor of heat and electricity except it

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Phosphorous

Sulphur

Graphite

Iodine

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