Question # 1

The bond in the product of lewis acid base reaction.

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Ionic

Covalent

Metallic

Coordinate covalent

Formic acid is present in

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String of bees

Sour milk

Apple

Fats

In the preparation of insoluble salts, which one of the facts is incorrect?

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Two soluble salts are mixed

Two in soluble salts are mixed .

One of the salt produced is insoluble

Both of the salts produced are insoluble

Which one is used for alkaline batteries?

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NaOH

Ca(OH)₂

KOH

Mg(OH)₂

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

Which acid is found in sour milk?

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`Formic acid

Lacitc acid

Citric acid

Butric acid

Arrhenius put forward acid base concept in.

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1878

1786

1787

1790

Sum of PH and POH of a solution is:

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7

14

16

18

Bronsted and Lowry presented their theories of acids and bases in

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1785

1787

1923

1925

pH value normally varies from.

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0-14

1-14

7-14

10-14

Formula of Potassium ferrocyanide.

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K₄[Fe(CN)₆]^-4

K₃[Fe(CN)₄]^-3

K₂[Fe(CN)₆]^-4

K₄[Fe(CN)₅]^-4

Which is used to manufacture of soap?

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NaOH

Ca(OH)₂

KOH

Mg(OH)₂

When acid reacts with sulphites and Bi sulphates which gas is evolved?

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H2

CO₂

SO₂

NH₃

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