Question # 1

Which of the following is not a heavy industry?

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Iron

Fertilize

Paper

None

The reaction between fat and NaOH is called

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Esterification

Hydrogenolysis

Fermentation

Sponification

The number paper industries in Pakistan are:

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30

25

35

20

SO₂makes ___________ acid rains

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carbonic acid

Sulfuric

Nitric acid

All of these

Most of the universe consists of the matter in :

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Gaseous state

Liquid state

Plazma state

Solid state

Most animals can not digest:

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starch

cellulose

proteins

glucose

Which of the following molecules have a permanent dipole

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CH₄

CHCl₃

CCl₄

CO₂

Choose the chief air pollutant among the following which depletes ozone layer:

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carbon monoxide

carbon dioxide

chloroflurocarbons and nitrogen oxides

sulphur dioxide

The bonding occurs among polar covalent molecules containing H and one of the small electronegative element such as O,F or N is called:

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Ionic bonding

Metallic bonding

Bridge bonding

H-bonding

The solubility of A2B3 is X mole dm-3. Its Ksp is?

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6X(5)

36X(5)

64X(5)

108X(5)

Rusting of iron is the example of

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Fast

Slow

moderate

depends upon conditions

Which one of the following gases is used for artificial ripening of fruits

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Ethane

Ethyne

Methane

Propane

In its reaction with Na, 1 mol of X gives 1 mol of H_2(g). What is X

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CH₃CH₂CH₂CH₂OH

(CH₃)₃COH

CH₃CH₂CH₂CO₂H

CH₃CH(OH)CO₂H

Alkali metals react violently with halogens to form

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Hydrides

Halides

Anyhydrides

None of these

The number of coulombs required for the deposition of 107.870 g of silver is

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96500

48250

193000

10000

Prevention of corrosion of iron by Zn coating is called

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Galvanization

Cathodic protection

Electrolysis

Photoelectrolysis

Which of the following is a biodegradable polymer?

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Cellulose

Polyethene

Polyvinyl chloride

Nylon-6

When aqueous solution of NaOH is electrolysed useing graphite electrodes, the product obtained at anode is

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O₂gas

H₂gas

Na metal

Na₂O

Baukelite is a polymer obtained from two monomers

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Phenol and ethanol

Phenol and methanol

Phenol and methanal

Phenol and acetone

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Zero

1

2

1.5

Hybridization of each carbon atom in benzene ring is

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sp hybridized

sp²hybridized

sp³

dsp²

In a primary alkyl halide, the halogen atom is attached to a carbon which is further attached to

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Only one carbon atom

Two carbon atoms

Three carbon atoms

one or no carbon atom

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