Question # 1

General formula of aliphatic carboxylic acids:

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R-OH

R-COH

R-CO-R

RCOOH

The number of paper industries in Pakistan are

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30

25

35

20

Which of the following is primary alkyl halide

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IsopropyI halide

Sec-butyl halide

Tert-buryi halide

Neo-pentyl halide

In a crystal the atoms are locate at the position of:

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infinite potential energy

minimum potential energy

Zero potential energy

maximum potential

The most abundant protein in the human body is

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Collagen

Keratin

Myosin

Albumin

How much quantity of water is in the domestic use

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0.08%

16%

24%

90%

Charle's law only obeys when temperature takes in ______ scale

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Celsius

Fahrenheit

Kelvin

Rickey

Whenever a reaction is endothermic, then it means that

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Heat is transferred system to the surrounding

Heat is transferred from surrounding to the system

Heat content of the products is less than that of reactants

Heat content of the reactants is greater than the products

The amount of heat required to convert one mole of solid into liquid is called

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molar heat of fusion

heat of fusion

heat of vaporization

heat of liquefaction

Part of fresh water consumed in domestic purpose:

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1%

2%

69%

8%

The deviation of a gas from ideal behavior is maximum at:

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-10∘C and 5.0 atm

-10∘C and 2.0 atm

100∘C and 2.0 atm

0∘C and 2.0 atm

The shape of methanol, ammonia and water molecule can be explained by assuming

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Sp³hybridization

Sp²hybridization

Sp hybridization

All of these

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There is no change in temperature

No change in volume

Heat is absorbed

Heat is released

One mole of C₂H₅OH contains the number of H-atoms

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6.02 x 10²³

3.61 x 10²⁴

1.81 x 10²⁴

6.02 x 10²⁴

The oxidation number of chromium in K₂Cr₂O₇is

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14

12

6

None of these

The compound prepared by a substitution reaction of benzene is

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Acetophenone

Glyoxal

Cyclohexame

Hexabromo cyclohexane

What happens when reaction is at equilibrium and more reactant is added :

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Forward reaction rate is increased.

Forward reaction rate is decreased.

Backward reaction rate is increased.

Equilibrium remains unchanged.

The heat contents of all the elements in their standard states are taken to be

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1

2

0

None

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Rate is independent of concentration of water since it is in excess

Rate is independent of concentration of ester since it is in exces

Rate depends upon the concentration of acid catalyst added

Rate = k[CH₃COOC₂H₅]^1/2[H₂O]^1/2

The degree of polarity of molecule is known as its

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Dipole moment

Moment arm

Bond energy

Ionic character

The solution of which acid is used for seosoning of food ?

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Formic acid

Acetic acid

Benzoic acid

Butanoic acid

A transition metal complex can be recognized by various terms. Which is not the proper term

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Central metal ion

Coordination number

Ligand

Geometry of complex

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