Question # 1

The color of Fe(OH)₂ ppt is.

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White

Brown

Muddy green

Blue

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 salt is used for the manufacture of detergents, pulp and paper?

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NaCl

Na₂CO₃

Na₂SiO₃

NaCl

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

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Carbon monoxide

Carbon dioxide

Hydrogen

Hydrogen chloride

All water soluble metallic oxides have characteristic of:

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acidic

basic

neutral

amphoteric

According to Bronsted and Lowry concept an acid is a substance that can donate.

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Proton

Electron pair

Neutron

Electron

Acid used for cleaning metals , tanning and in printing industries, is:

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H2SO4

HNO3

CH3COOH

HCI

Potassium ferrocyanide salt is.

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Normal

complex

Basic

Acidic

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

A conjugate base is a specie formed by donating a.

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Proton

Electron pair

Neutron

Electron

Which of one the following is Lewis base?

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BF3

H+

NH3

Ag+

According to Lewis concept a base is a substance which can donate.

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Proton

Electron pair

Neutron

Electron

Which acid is used for etching glass?

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HF

HCl

HBr

HI

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