Question # 1

Nitro alkanes exhibit the:

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Chain isomerism

Positional isomerism

Functional group

Metamerism

Enzymes have been classified on the basis of

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protein structure

prosthetic groups

type of reaction they catalyse

bonding in them

The rate diffusion of H₂is 4 times than the of an unknown gas at same temperature and pressure, the molecular mass of unknown gas is

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32

16

4

64

Which of the following is thermosetting polymer

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Synthetic varnishes

Epoxy resins

PVC

Both A and B

Velaric acid is obtained from a herb velarian, its IUPAC name is

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Propionic acid

Pentanoic acid

Butyric acid

Caporic acid

Ozone in most of the tropical regions acts as a pollutant and cause

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damages to eyes

aggravates asthma

chest discomfort

all of these

A fat with 18 carbon & no double bond will be

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Solid

Liquids

Gel like

None

An example of regulatory protein is

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nucleoprotein

hemoglobin

lactoglobulin

thyroxine

The products of electrolysis of which of the followings are known

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Fused electrolyte

Aqueous solution of eleetrolyte

Solid electrolyte

Solid metal

^{Reaction of ethyl bromide with ammonia}

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Completes in a single step

Completes in two steps

Continues till N is left with no lone pair

is reversible

The spreading of ink on blotting paper is due to

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capillary action

hydrogen bonding

intermolecular forces of the ink

intermolecular forces of the ink and paper

On alkali and alkaline earth metals down the group, there is decreasing trend in

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m.p.

b.p.

Ionization potentiall

All of these

Benzene is not prepared from

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Acetylene

Phenol

Benzoic acid

Bromo benzene

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4-methyl pentene

2-methyle-1-butene

2-methyl propane

None of the above

Which is not the form of silica?

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Amethyst quatz

Rose quatz

Smoky

None of these

A free radical reaction takes place in three steps, initiation, propagation and terminations. Which of the following expression represents a propagation step

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Which of the following are thermoplastic materials

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PVC

Polystyrenes

Polyethylene

All these

The reaction-method that does not give an alkane is

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Catalytic hydrogenation of alkanes

Wurtz reaction

Hydrolysis of alkyl magnesium bromide

Dehydrohalogenation of an alkyl halide

Isotopes of an element differ in

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Number of protons

Number of electrons

Number of neutrons

Number of electrons and protons

The strongest acid among the following aromatic compound is

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Ortho-nitrophenol

Para-chlorophenol

Para-nitrophenol

Meta-nitrophenol

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.

The reaction of an alkyl halide with RCOOAg produces

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Ester

Ether

Aldehyde

Ketone

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