Question # 1

All of the following are hydroxy containing amino acids except

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Serine

Threonine

Valine

Tyrosine

An alkyl halide reacts with NH3 to give

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Amide

Cyanide

Amine

Aniline

Acetic acid is obtained from:

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Red out

Vinegar

Butter

Milk

Natural water is

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Pure

Impure

Acts as solute

Distilled

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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remain unchanged

increase four times

reduce to 1/4

be doubled

The potential of SHE is taken as zero which is avalue

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Reference

Arbitrary

Exact

Experimental

Vegetables oils are:

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unsaturated fatty acids

glycerides of unsaturated fatty acids

glycerides of saturated fatty acids

essential oils obtained from plants

Choose an addition polymer among the following:

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terylone

nylon 6,6

polystyrene

epoxy resin

The value of R in term of dm³torr k^-1mol^-1

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62400

62.4

8.313

0.0821

A real gas most closely approaches the behaviour of an ideal gas at

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15 atm. and 200 K

1 atm. and 273 K

0.5 atm.and 500 K

15 tm, and 500 K

The structure of sodium chloride is

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simple cube

body centered cubic

face centered cubic

depends upon conditions

Which of the following statement is not related to Solvay's process of Na₂CO₃

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Cheap materials

Pure product

Continuous process

Harmful by-products

Substances that tend to decrease the activity of enzymes are called

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Coenzyme

Activators

Inhibitors

Apoenzyme

Atomospheric pollutant is

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CO₂

CO

O₂

N₂

One mole of SO₂contains

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6.02 x 10²³atoms of oxygen

18.1 x 10²³, molecules of SO₂

6.02 x 10²³atoms of sulphur

4 gram atoms of SO₂

Spectrum of white light is continuous becuase

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Colors separated by dark spaces

There are no boundary lines between the colours

The radiations are in infrared region

The radiatins fall in ultraviolet region

Preparation of vegetable ghee involves:

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Halogenation

Hydrogenation

Hydroxylation

Dehydrogenation

Alcohals can be distinguished using test:

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Lucas

Tollen's

Koib's

William's

The reagents like KMnO_{4 and HCL cannot be filtered through Gooch crucible if its base is covered with :}

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Butterfly paper.

Ordinay paper.

Flying paper.

Filter paper.

Reduction of alkyl halides give

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Alkanes

Alkenes

Ketones

Ether

A single benzene ring can have ______ ortho position maximally

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One

Two

Three

Four

The reaction between fat and NaOH is called

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Esterification

Hydrogenolysis

Fermentation

Saponification

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