Question # 1

To distinguish aldehyde from ketone which solution is used

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Alkaline solution

Fehling's solution

A solution containing K2Cr2O7

A solution containing acid only

Which is not a calcareous material?

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line

clay

marble

marine shell

The deviation of a real gas from ideal behaviour is maximum at

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-10.0°C and 50 atm

-10°C and 2 atm

100°C and 2.0 atm

0°C and 2 atm

Which of the following is a strong acid

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CH3COOH

C2H5OH

HCOOH

Phenol

All the metal shine when they are freshly cut The reason is

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the conductivity of the metal is increased

the process of cutting gives energy to the metal atoms

the electrons become less delocalized according to valance bond theory

the electrons are excited at higher energy levels and emit the photons when they fall back

Which liquid is more volatile?

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water

mercury

benzene

honey

The deviation of a gas from ideal behaviour is maximum at

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-10°C and 5.0 atm

100°C and 2.0 atm

-10°C and 2.0 atm

0°C and 2.0 atm

Which one of the following statements about diamond is not true?

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the coordination number of carbon atoms is 4

diamond is an isotpe of graphite

diamond has a high melting point

diamond has a rigid tetrahedral, structure

Which one the following gases is ideal at -200°C?

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N₂

He

both

none

On adding NH3 to water

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lonic product will increase

[H3O+] will inerease

lonic product will decrease

[H3O+] will decrease

Water is purified by the process:

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Aeration

Coagulation

Chlorination

All of these

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Neutrons are attracted by nucleus

Neutrons carry out nuclear reactions

Neutrons carry no charge

Neutrons are electromagnetic radiations

Which is not a calcareous material

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Lime

Clay

Marble

Marine shell

Which quantum number is sufficient to describe the electron is hydrogen atom?

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l

n

m

s

Which of the following species has unpaired electrons in antibonding molecular orbitals

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Of the following four reactions, formic acid and acetic acid differ in which respect?

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Replacement of hydrogen by sodium

Formation of ester with alcohol

Reduction of Fehling solution

Blue litmus reaction

Formation of PVC form vinyl chloride is an example of

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Substitution reaction

Addition polymerization

Condensational reaction

Aldol condensation

Which is not a calcarious material?

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Lime

Clay

Marble

Marine shell

Which is true about the electronegativity order of the following?

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P > Si

C > N

Br > Cl

Sr > Ca

Which of the following waste material is not recycled for use again

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Paper

Plastic

Hides of animals

Glass

Sodium can be obtained by :

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Electrolysis of acidified water.

By heating NaCl and water at 100°

Electrolysis of molten sodium chloride.

Electrolysis of aqueous sodium chloride.

Which of these polymers is an addition polymer

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Nylon 6,6

Polystyrene

Terylene

Epoxy resin

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