Question # 1

What is the formula of clay?

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Asbestos

Talc

H2Al2(SiO4)2.H2O

Na2SiO3

The percentage of SO₂ produced by volcanoes is:

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47%

57%

67%

77%

Which one of the following will react with bothethand and ethanoic acid at room temperature

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CaCO3

CuO

Na-metal

CH3OH

The enzymes that bring about exchange of functional groups like phosphate are called

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Ligases

Lyases

Isomerases

Transferases

Pressure remaining constant, at which temperature the volume of a gas will become twice of what it is at 0°C

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546°C

200°C

546 K

273 K

Which of the following substance is used as filler or additive in paper making:

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Glucose

Starch

Fructose

Cellulose

Which one increases by common ion effect except?

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Crystallization

Solubility

Association of ions

All of these

Which process of ester will yield carboxylic acid?

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Hydration

Hydrolysis

Oxidation

Reduction

The proteins which are derived by conjugated proteins are called as

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Simple protein

Complex protein

Derived protein

None

Value of gas constant R is

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8.314 J K^-1mol^-1

0.082 J K^-1mol^-1

273.15 J K^-1mol^-1

101325 J K^-1mol^-1

If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of the gas will:

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reduced to 1/4

be double

increases four times

remains unchanged

The process in which the solvent molecules are surrounded and interact with solute ions or molecules is called

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Solvation

Hydration

Hydrogenation

None

Unsaturated hydrocarbon containing a double bond are called

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paraffin

Alkanes

Olefins

Acetylene

All C - H bond lengths of benzene ring is

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1.07A°

1.09A°

1.08A°

None

Picric acid is

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2, 4, 6-Trinitrotoluene

2, 4, 6-Tribomoethanol

2, 4,6-Trinitrophenol

Para-Nitrophenol

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-76 KJ

-57 KJ

-171 KJ

-114 KJ

Which has soapy touch?

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Na2B4O7

H3BO3

Ca2B6O11

HBO2

Which of the following element has the maximum electron affinity?

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F

S

I

Cl

For a given process the heat change at constant pressure q_pis related to the heat change at constant volume (q_v) according to

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q_p= q_v

q_p< q_v

q_p> q_v

q_p= qv/2

The shape of the molecule SF₂Cl₂is

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Trigonal bipyradmidal

Cubic

Octahedral

Tetrahedral

Enzymes are catalysts which contain other than carbon and hydrogen one other element

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Oxygen

Sulphur

Phosphorus

Iodine

Whenever a week base is dissolved in water, it give its conjugate acid. similarly a weak acid in water produces its conjugate base. This conjugate acid-base pair concept is stated by

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Law of mass action

Le-charlier's principle

Common ion effect

Lowery Bronsted concept

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