Question # 1

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

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Carbon monoxide

Carbon dioxide

Hydrogen

Hydrogen chloride

Which is used for cleaning agent for domestic and commercial purpose?

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NaCl

Na₂CO₃

NaHCO₃

Na₂SiO₃

Who proved that the presence of hydrogen as the main constituent of all acids.

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Lavoisier

Humphrey Davy

Dalton

Arrhenius

___________ is not an acid:

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HCl

NH₃

H₂CO₃

H₂SO₄

A conjugate acid is a specie formed by accepting a.

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Proton

Electron pair

Neutron

Electron

All water soluble metallic oxides have characteristic of:

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acidic

basic

neutral

amphoteric

Citric acid is present in

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Citrus fruits

Sour milk

Rancid butter

Apple

A base is a substance which neutralizes an acid which of these substances is not a base?

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Aqueous ammonia

Sodium chloride

Sodium Hydroxide

Calcium Hydroxide

A salt is not composed of

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A metallic cation

Non -metallic anion

an anion of a base

An anion of an acid

Acetic acid is used for:

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Elching designs

Clearing metals

Flavouring food

Making explosives

Acids turn

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Blue litmus red

Red litmus blue

Blue litmus green

Blue litmus blue

Which one of the following species is not amphoteric?

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H₂O

NH₃

HCO₃

SO₄

The color of Fe(OH)₂ ppt is.

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White

Brown

Muddy green

Blue

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