Question # 1

A protein rich in proline and hydroxy proline is

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Globin

Collagen

Casein

Histone

Nitrogen in the atmosphere is:

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78%

21%

0.9%

0.03%

Octyl acetate has the flavor of

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Orange

Pineapple

Banana

Apple

The polymers which can be re-softened again and again are called

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Thermoplastic

Thermosetting

Both a and b

None

Synthetic organic pesticides formulated nowadays are more then:

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One thousand

Ten thousand

Two thousands

Twenty thousand

For reaction of methane and chlorine light is not available then

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Reaction will take place rapidly

No Reaction take place

Reaction occurs at double the rate

May all cases occur

A molecule oilgosacharide on hydrolysis produces _____ molecules of monosacharide:

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1

2

4

6

Each of the following compounds is effective as a refrigerant.
The release of which one of these cause the greatest depletion of the ozone layer?

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CC₂/F₂

CH₃OCH₃

CH₃CHF₂

CH₃CH₂CH₃

a hole used to dump the municipal wastes is called:

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landfill

effluents

leachate

inclneration

Which of the following govern the diffusion of gases

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Dalton's law

Avogadro's law

Graham's law

Newton's law

which chlorine compound has bonding that can be described as ionic with some convalent character?

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NaCI

MgCI₂

AICI₃

SiCI₄

Raney - nickel is the alloy of Ni with

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Pt

Al

Cu

Pd

Which one of the followings is a heterocyclic compound

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Cyclohexanol

Phenol

Pyridine

Anthracene

Baukelite is a polymer obtained from two monomers

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Phenol and ethanol

Phenol and methanol

Phenol and methanal

Phenol and acetone

Which of the following correctly describes the process occurring at the electrodes when molten NaCl is electrolyzed:

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No reaction at anode, reduction at cathode.

No reaction at cathode, oxidation at anode.

Oxidation at anodes, reduction at cathode.

Oxidation at cathode, reduction at anode.

Any other aldehyde except formaldehyde on reaction with Grignard's will produce

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Secondary alcohol

Primary alcohol

Tertiary alcohol

Aromatic alcohol

The vant Hoff factor (1) accounts for

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Degree of solubilisation of solute

The extent of dissolution of solute

The degree of decomposition of solution

The term ebullioscopy is used for

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Depression of freezing point

Elevation in boiling point

Lower of vapour pressure

None of the above

E₁mechanism is generally shown by

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1° - RX

2° - RX

3° - RX

None of these

The value of charge on electron is

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1.602 x 10^-19coulombs

1.602 x 10^-18coulombs

1.602 x 10^-17coulombs

1.602 x 10^-16coulombs

Which of the following has highest dipole moment?

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NH₃

PH₃

AsH₃

SbH₃

Which of the atoms has 1s², 2s², 2p_x²2p¹_y2p¹_zconfiguration

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Nitrogen

Carbon

Fluorine

Oxygen

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