Question # 1

Mixture of alcohol and water can be separated by

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Solvent extraction techniques

Crystallization

Precipitation and filtration

Fractional distillation

A carboxylic acid with one caboxyl group:

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Monocarboxylic acid

Dicarboxylic acid

Tricarboxylic acid

Polycarboxylic acid

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Equal volumes of N₂and H₂are reacting

Equal masses of N₂and H₂are reacting

The reaction has stopped

The same amount of ammonia is formed as is decomposed into N₂and H₂

NaHCO₃is prepared by

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Down's process

Solvay's process

Nelson's process

None of these

The process in which one s and two p orbitals mix up with each other is called

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Sp-hybridization

Sp²-hybridization

Sp³-hybridization

Dsp²-hybridization

Lead accumulator contains

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30% NaCI solution as electrolyte

30% HCI solution as electrolyte

30% H₂SO₄solution as electrolyte

30% NaOH solution as electrolyte

A phtotographic plate is coated with an emulsion of silver nitrate and

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AgCI

AgI

AgBr

NaNO₃

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0 1

0 2

1 1

1 2

Which is possible in ethers?

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Reactivity high

Oxidation and reduction

Reactivity towards bases

Towards acids

The amount of heat evolved or absorbed in a chemical reaction indicated by balanced chemical equation at 25° and one atmospheric pressure is called

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Enthalpy of formation

Enthalpy of neutralization

Enthaply of combustion

Enthaply of reaction

Dehydrohalogenation of alkyl halides produces

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Alcohol

Alkane

Alkene

Alkyne

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The value of K_pfalls with rise in temperature

The value of K_pfalls with increasing pressure

Addition of V₂O₅catalyst increase the concentration of SO₃

The value of K_pis equal to K_c

The osmotic pressure of a dilute solution is directly proportional to the

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Diffusion rate of the solute

Ionic concentration

Elevation in boiling point

Flow of solvent from a concentrated to a dilute solution

Which has highest 1st I.E.

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Br

Cl

F

l

Solvent extraction is an unstable,Process and it is controlled by:

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Alcohol extraction

Petrol extraction

Phenol extraction

Ether extraction

The boiling point of an a zeotropic mixture of water and ethye alcohol is less than that of water and alcohol. The mixture shows

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That solution is highly saturated

No deviation from Raoult's law

Positive deviation from Raoult's law

Negative deviation from Raoult's law

Poly hydroxyl compounds of aldehyde and ketones are:

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Carbohydrates

Proteins

Fats

Lipids

The word paper is derived from the name of which reedy plany

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Rose

Sun flower

Papyrus

Water hyacinth

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8

4

9

3

Bohr model of atom is contradicted by:

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Planck's quantum theory

Pauli's exclusion theory

Heisenberg's uncertainty principle.

All of above.

When the degree of freedom increase the entropy ______

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Decreases

Increases

Remains same

All

C₂H₅CHO and (CH₃)₂CO can be distunguished by testing with

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Phenyl hydrazine

Hydroxylamine

Fehling solution

Sodium bisulphate

All covalent bonds formed between the two atoms are non-polar when

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Covalent bond between two non-metal atoms

Covalent bond between metal and non-metal

Covalent bond between two atoms of same element

Covalent bond between metal atoms

Which element does not belong to 3d transition series

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Ti

V

Mn

Te

Which compound shows hydrogen bonding

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C₂H₆

C₂H₅CI

CH₃-O-CH₃

C₂H₅OH

Linear shape is associated with set of hybrid orbitals?

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sp

sp2

sp3

dsp2

A double bond consists of:

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Two sigma bonds

One sigma and one pi bonds

One sigma and two pi bonds

Two pi bonds

Identify the heterocyclic compound

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Toluene

Pyridine

Butanoic acid

Propenol

To calculate volume of the solvent, we need to know, the :

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Density of solute

Normality of solute

Mass of solute

Molarity of solute

The formula of secondary alcohol is

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R - OH

R - CH₂OH

R₂CHOH

R₃COH

Which one of the following is not air pollutant gas

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CO

CO₂

NO

SO₂

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