Question # 1

When acids react with metals which gas is evolved?

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H₂

O₂

Cl₂

N₂

Acetic acid is a weak acid because it.

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Is used in cooking and flavouring food.

Has very low pH

Is not fully ionized

Does not contain any hydrogen ions.

All acids turn blue litmus.

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Red

Blue

Pinck

White

Which of following is not amphoteric?

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H₂O

NH₃

HCO₃

SO₄

Indicators are the

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Inorganic compounds

Organic compounds

Ionic compounds

Covalent compounds

According to the Lewis concept acid is a substance which can.

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Donate a proton

Donate a pair of electron

Accept a proton

Accept a pair of electron.

Which of one the following is Lewis base?

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BF3

H+

NH3

Ag+

Latin word 'Acidus' means:

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sweet

salty

sour

bitter

Which acid used for food preservation?

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H₂SO₄

HNO₃

HCl

CH₃COOH

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

When Bronsted and Lowry put forward acid base concept?

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1913

1923

1933

1943

Which base is more corrosive?

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NH₄OH

NaOH

Ca(OH)₂

AL(OH)₂

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