Question # 1

Nylon 6 6 is prepared by the reaction of hexamethylene with

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formic acid

acetic acid

adipic acid

none of these

The enthalpies of all elements in their standard states are

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Unity

always +ve

always -ve

zero

The alcohol that does not form curbonyl compound on oxidation

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iso-butyl alcohol

neo pentyl alcohol

Ethanol

ter-butyl alcohol

BOD is the oxygen demand with in day(s):

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Four

Two

Three

Five

An example of neutral amino acid is

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Gylcine

Lysine

Aspartic acid

Glutamic acid

The high molecular weight materials which yield on hydrolysis the amino acids is called:

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Carbohydrates

Lipids

Fatty acids

Proteins

Sex harmones belong to a group of organic compounds called:

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heterocyclics

steroids

amino acids

amines

Point out that which is not an application of liquid crystals?

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Source of energy

In display of electrical devices

For skin thermography

As temperature sensor

Which of the following alkyl halides undergoes SN1 reaction fastest

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Methyl chloride

Isobutyl chlorido

Ethy l chloride

Tertiary butyl chloride

Sea gets polluted bu accidental oil spills and

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Atmospheric pressure

Nitrogen gas

Cargo oil tankers

Aero plane

Which order of vapour pressure in the following liquids is correct

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water > ethanol > acetone > ether

ether > acetone > ethanol > water

ether > ethanol > acetone > water

water > ether > acetone > ethanol

The human body can synthesize ______ amino acids

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1

10

20

19

In public urinals, we observe some nascent smell. This smell is due to

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Hydrolysis of urea of urine by urease of atmosphere into NH₃and CO₂

Formation of sulphonic acid by urea of urine

Reaction of CO₂of atmosphere with urea monoitrate in urine

Hydrogen present in air reacts with nitrogen forming NH₃

Protein may have

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Primary structure

Secondary structure

Tertiary structure

All of these

The element with atomic number 55 belongs to which block of the periodic table

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s-block

p-block

d-block

f-block

In Dow's method, phenol can be made from

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Chlorobenzene

Benzene

Toluene

Benzene sulphonic acid

Which teat is not given by both glucose and fructose

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Give yellow ppt of CHl₃with alkaline aqueous iodine

With 2, 4-DNPH give yellow ppt of hydrazone

Evolve H₂gas with Na metal

Oxidised with [Ag(NH₃)₂]⁺i.e. Tollen's reagent

which one of the following is a heteroheneous catalysis

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The total number of possible values of magnetic quantum number for the value of l=3 is

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3

1

5

7

A single benzene ring can have ______ ortho position maximally

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One

Two

Three

Four

Corrosion reaction are

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Spontaneous redox reaction

Non-spontaneous acid-base reactions

Spontaneous acid-base reactions

None of these

General formula of aliphatic carboxylic acids:

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R---OH

R----COH

R----CO---R

RCOOH

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