Question # 1

Which gas is evolved when acids react with carbonates and bicarbonates?

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Carbon monoxide

Carbon dioxide

Hydrogen

Hydrogen chloride

A neutral salt is not composed of.

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Anion of base

Anion of acid

Metallic ion

Non metallic anion

Soda time is a mixture of:

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CaO and NaOH

CaCI2 and NaOH

CaO and ca(OH)2

CaCI2 and KOH

The value of constant of ionic product of water Kw at 25 C.

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1.0 x 10^-4

1.0 x 10¹⁴

1.0 x 10^-4

1.0 x 10⁴

The product of Lewis acid-base reaction is called adduct. The bond between the adduct species is.

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Ionic

Covalent

Metallic

Co-ordinate covalent

Which one of the following species is not amphoteric?

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H₂O

NH₃

HCO₃

SO₄

Acid reacting with metal sulphides, liberate gas.

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Oxygen

Hydrogen

Hydrogen Sulphide

Hydrogen Oxide

Which acid is used for food preservation?

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Hydrochloric acid

Benzoic acid

Sulphuric acid

Nitric acid.

A conjugate base is a specie formed by donating a.

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Proton

Electron pair

Neutron

Electron

|Which one is not an Arrhenius acid?

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HCl

H2SO₄

CO₂

HNO₃

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