Question # 1

Bond formation energy of one O-H bond is............

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488 kJ/mol

484 kJ/mol

486 kJ/mol

489 kJ/mol

The colour of anhydrous copper (II)sulphate solid is

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Pink

Black

White

Blue

The molecular mass of H2SO4 is.

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9.8 g

98 amu

98 g

9.8 amu

1- gram atom of carbon contain hwo many moles.

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1 mole

2 mole

6 moles

12 moles

When one mole of each of the following compounds is reacted with oxygen, which wil produce the maximum amount CO2?

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Carbon

Ethane

Diamond

Methane

Caustic chemical drain cleaner are captable of dissolving.

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Hair

Food

Grease

All of these

How much heat absorbed when NH3decomposed into N2 and H2?

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90.4 kJ/mol

92.4 kJ/mol

94.2 kJ/mol

95.2 kJ/mol

The branch of chemistry that is concerned with the large scale production of chemical substances is.

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Environemantal chemistry

Inorganic chemistry

Physical Chemistry

Industrial chemistry

What will hapen to the concentrations of the prodcut if a reversible reaction at eqiulibrium is not distrubed.

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They will keepon increasing

They will keep on decreasing

They will remain constant

They willremain constant for some time and then start decreasing

The electronegativity of carbon is

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2.5

2.0

1.0

4.0

d- subshell can accommodate maximum electrons.

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2

6

10

14

Which branch of chemistry is athe study elements and their compounds except for organic compounds?

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Physical Chemistry

Geochemisty

Organic chemistry

Inorganic chemistry

Aong the period which one of the followig decreases.

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Electronegativity

Ionization energy

Atomic radius

Electron affinity

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