Question # 1

The unit of specific conductivity is

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Ohm cm^-1

Ohm cm^-2

Ohm^-1cm

Ohm^-1cm^-1

For the carbylamine reaction we need hot alc.KOH and

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Any amin and chloroform

Chloroform and Ag powder

A primary amine and chloroform

A mono alkyl amine and trichlorom-ethane

Lysine is ______ amino acid

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Acidic

Basic

Natural

None of these

Where lime is not used

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In refining or metals

In paper industry

In glass industry

In the preparation of NaOH

The reaction of sodium with ethanol gives

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CH₃OH

NaH

H₂O

H₂

The rate of reaction :

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Remain same as reaction proceeds.

May decrease or increase as reaction proceeds .

Increase as reaction proceeds.

Decreases as reaction proceeds.

An excess of aqueous silver nitrate is added to aqueous barium chloride and precipitate is removed by filtration. What are the main ions in the filtrate

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Red P can be obtained form white P by

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Heating it with a catalyst in an inert atmosphere

Distilling it in an inert atmosphere

Dissolving it in CS₂and crysllizing

Melting it ad pouring the liquid into water

Alkyl halides are reactive :

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High

Medium

Less

Least

Identify the compound formed, when ethylene combines with water in the presence of 10% sulphuric acid and HgSO₄as catalyst

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Carbinol

Methanol

Ethanol

Glycol

Reaction of ethylamine with chloroform in alcoholic KOH produces

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CH₃OH

CH₃NC

C₂H₅NC

C₂H₅CN

Which reagent is used to reduce a carboxylic group to an alcohol?

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H2/Ni

H2/Pt

NaBH4

LiAIH4

Which of the following compound is industrially prepared by the electrolysis of solution of NaCl

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Na₂CO₃

NaHCO3

NaOH

NaOCl

Which acid is used in the manufacture of synthetic fibre

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Formic acid

Phthalic acid

Carbonic acid

Acetic acid

Which of the following synthetic fertilizer do not make soil acidic

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Urea

Thin urea

Ammonium phosphate

Potassium nitrate

Molarity of pure water is :

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33.3

55.5

44.4

66.6

Which of the following are thermoplastic materials

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PVC

Polystyrenes

Polyethylene

All these

The negatively charged particles are called

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Cation

Radical

Anion

Positron

Cathode rays emitted from cathode are

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Canal rays

Protons

Electrons

Positrons

The valency of noble gases, in general, is

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Zero

One

Three

Two

The atom other than C in a hetrocyclic compound is called as

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Hetroatom

Hetroion

Hetromolecule

Hetroelement

The measurement of degree of disorder is

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Internal energy

Enthalpy

Entropy

None

The protection of steel by chrome plating is due to

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Cathodic protection

Anodic protection

Covering of steel surface

Formation of alloy with iron

Wolf-kishner reduction is used for the reduction of

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Nitro compounds

Carboxylic acids

Carbonyl compounds

Olefins

Phenol is used in the preparation of

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Bakelite

Phenatherene

Cellulose

All of these

The correct order of 2nd l.P. of C,N,O and F is

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O > F > N > C

O > N > F > C

C > N > O > F

F > O > N > C

Replacement of hydrogen atom by - SO₃H group in benzene is called

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Nitration

Alkylation

Sulphonation

Acylation

Which metal is used for catalytic hydrogenation of oils

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Cu

Pt

Ni

Pd

The rate of reaction is denoted by

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dc/dp

dc/ac

dc/dT

dc/dt

When initial concentration of reactants an order of reaction is given, then its half life period can be calculated by the equation

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Hemoglobin contains nearly:

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10,000 atoms

100 atoms

1000 atoms

1 atom

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