Question # 1

The molecular speed Crms of gas is

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Independent of temperature

Proportional to the absolute temperature

Proportional to the square root of absolute temperature

Proportional to the square of absolute temperature

Choose the gas law which gives relationship between volume and pressure:

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Bolye,s law

Graham,s law

Dalton,s law

Charles,s law

What is the reason of ionic solids for not conducting electricity?

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free electrons are less

ions don't have translatory mention.

ions don't have translatory mention

the coordination number of the ion is very high.

The volume of 2.8 g of carbon monoxide at 27°C and 0.821 atm pressure is (R = 0.0821 lit.atm.Mol^-1 K^-1)

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30 L

3 L

0.3 L

1.5 L

All are examples of different classes of enzymes except

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Hydrolases

Isomerases

Oxido-reductases

Mutases

Ionic solids are characterized by

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low melting points

good conductivity in solid state

high vapour pressure

solubility in polar solvents

Coagulation removes suspended particles in ran water:

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60%

70%

80%

90%

Amorphous solids:

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have sharp melting point

undergo clean cleavage when cut with knife

have prefect arrangement of atoms

can possesses small regions of orderly arrangement

Total pressure of mixture of two gases is:

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The ratio of their partial pressure

The product of their partial pressure

The difference partial pressure

The sum of their partial pressure

Areal gas obeying Van der Waal's equation will resemble ideal gas ilf the:

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both a and b are large

both a and b are small

a is small and b is large

a is large and b is small

A single chlorine free radical can destroy how many ozone molecules

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100

100000

10000

10

Steel may be manufacture by two processes which two are correct

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Open hearth process and besemer process

Open hearth process and Haber process

Bassemer process and Haber process

Contact process and Haber process

Potable water is considered to be

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Safe for human consumption

Not safe for human consumption

The surface water

The ground water

A homogeneous mixture of two or more than two chemical substances is called

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Solute

Solution

Solvent

Salvation

Out of 110 known elements, transition elements are

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40

60

50

80

Hypo is used in photography for

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Developing picture

Picture printed

The colour of picture

The fixation of picture

Detergents are

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Synthetic products

Natural products

Both (a) and (b)

None of these

Which of the following is not a colligative property?

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Depression in freezing point

Elevation of boiling point

Osmotic pressure

Modification of refractive index

Which of the following is a noble gas:

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Ne.

Cl₂.

H₂.

N₂.

The electron releasing effect of methyl group is significant and it makes ring a good

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Electrophilic

Nucleophilic

Nucleophobic

Hydrophobic

Corrosion reaction are

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Spontaneous redox reaction

Non-spontaneous acid-base reactions

Spontaneous acid-base reactions

None of these

Poly hydroxyl compounds of aldehyde and ketones are:

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Carbohydrates

Proteins

Fats

Lipids

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