Question # 1

Naturally occuring lipids are called

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Fats

Protein

Steroids

None

Iodine number of an oil indicates its:

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molecular weight

purity

degree of unsaturation

acidic strength

Which one among the following is not a good leaving group

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HSO4-

CI-

OH-

Br-

Plaster of Paris is obtained from

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marble

bauxite

gypsum

limestone

Strong dipole-dipole forces among the liquid molecules are responsible for

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very high heat of vaporization

very low heat of vaporization

cannot be predicted

negligible forces are these

The unit of R depends on

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Mole

Pressure volume

Temperature

None of these

SN2-reactions can be usually observed in

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Primary alkylı halide

secondary alkyl halide

Tertiary alkyl halide

Both A. and B

The standard electrode potential of hydrogen is arbitrarily taken at 298k is

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1.00volt

0.10 volt

0.00 volt

10.0 volt

Grey tin crystals belong to

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tetragonal

cubic

orthorhombic

rhomtrohedral

Lanthanides an actinides belong to following group of periodic table:

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IB

VIIIB

IIB

IIIB

As the number of carbon atoms increase the number of isomers also increase. The six carbon compound hexane has as many as:

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10 isomers

3 isomers

5 isomers

6 isomers

Sodium should be stored in

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Air free from moisture

Air free form carbon dioxide

Under water

Under kerosene oil

Without proper suction filtration is

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Rapid process.

Fague process.

Slow process.

Useless process.

Which of the following derivative can not be prepared directly from acetic acid

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Acetamide

Acetyl chloride

Acetic anhydride

Ethyl acetate

At room temperature formaldehyde is

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Gas

Liquid

Solid

None of the above

The driving force for making a bond is

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To attain noble gas electronic configuration

To make soled compounds

To make different compounds

To make gaseous substances

Which of the sub-atomic particles is not charged

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Electron

Proton

Neutron

All of them

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

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Oxygen

Sulphur

Phosphorus

Iodine

Which of the following process is employed to convert alkyl halide into alcohol?

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Addition

Substitution

Dehydrohalogenation

Molecular rearrangement

In a Galvanic cell, the electrons flow from

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A node to cathode through the solution

Cathode to anode through the external circuit

Anode to cathode through the external circuit

The destructive distillation of coal gives three products. What is not the product of destructive distillation of coal

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Coal gas

Carbon dioxide

Coal tar

Coke

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With H₂/Ni CH₃(CH₂)₅CH₂OH

With H₂/Ni CH₃(CH₂)₅CH₃

With NaBH₄ CH₃(CH₂)₅CH₂OH

With NaBH₄ CH₃(CH₂)₅CHO

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