Question # 1

Coligative properties are the properties of

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Dilute solution which behave as nearly ideal solutions

Concentrated solutions which behave as nearly non-ideal solution

Both (i) and (ii)

Neither (i) and (ii)

Which of the following fertilizers is useful for paddy rice

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Ammonium nitrate

Ammonium sulphate

Urea

Ammonium chloride

Grignard reagent on reaction with a ketone forms

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Tertiary alcohol

Secondary alcohol

Primary alcohol

Carboxylic acid

Palmitic acid & steanic acid ae obtained from process of fats & oils:

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Reduction

Neutralization

oxidation

hydrolysis

The process in which the solvent molecules are surrounded and interact with solute ions or molecules is called

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Solvation

Hydration

Hydrogenation

None

The avtive mass of 64 g of HI in a two litre flask would be

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2

1

5

0.25

A special application of the Hess's law to binary ionic compounds of M⁺X^-type in calculation of their lattice energies is

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Enthalpy of reaction

Born-haber cycle

First law of thermodynamics

Enthalpy of combustion

Tetrabromoethane on treatment with alcoholic zinc gives

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Ethylbromide

Ethane

Ethene

Ethyne

What is not true about DNA

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It preserve genetic information

To relicates

Synthesized protein

It has a linear structure

Picric acid is

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2, 4, 6-Trinitrotoluene

2, 4, 6-Tribomoethanol

2, 4,6-Trinitrophenol

Para-Nitrophenol

Fatty acids are:

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Allphatic monocarboxylic acids

Dicaroxylic acids

Tricarboxylic acids

Tetracarboxylic acids

Poly carboxylic acids

Rutherford's atomic model suggests the existence of

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Atom

Nucleus

alpha particle

Measons

If the difference of pKa values of the two acids is 2, then

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Acid with smaller pKa is 10 times stronger acid

Acid with greater pKa is 10 times stronger acid

Acid with smaller pKa is 100 times stronger acid

Acid with greater pKa is 100 times stronger acid

The oxide of beryllium is

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Acidic

Amphoteric

Superoxide

Basic

The element caesium bears resemblance with

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Ca

Cr

Rubidium

None of the above

The alkali metals form

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Ionic bond

Covalent bond

Co-ordinate bond

H-bond

Acetaldehyde is used to make

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Rubbber

Antiseptics

Phenolic resin

All of these

NaH is

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Ionic hydride

Complex hydride

Covalent hydride

Interstitial hydride

Molecular orbital picture of N₂indicates

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One unpaired electron

Two unpaired electron

No unpaired electron

None of these

Electron affinity of sulphur is

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More than O and Se

More than O but less than Se

Less than O but more than Se

Equal to O and Se

Which is not true with respect to cathode rays?

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A stream of electrons

Charged particles

Move with speed as that of light

Can be deflected by magnetic fields

Monosaccharides and oligosacchradies are generally called as

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Crystals

Sugars

Liquids

Non-sugars

Bakelite is obtained from phenol by reacting with

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Acetaldehyde

Acetal

Formaldehyde

Chlorobenzene

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3

4

5

2

Which of the following has polar bond

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O₂

N₂

HCl

Cl₂

Which of the following gases is used for illuminating purpose?

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Methane

Ethane

Propane

Butane

If the salt bridge is not used between two half cells, then the voltage

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Decrease rapidly

Decrease slowly

Does not change

Drops to zero

Toluene is also called

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Hydroxyl benzene

Methyl benzene

ethyl benzene

None

S_N1 reaction of alkylhalides leads to

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Retention of configuration

Recemisation

Inversion of configuration

None of these

Ozone layer of stratosphere requires protection from indiscriminate use of

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Fungicides, insecticides, bactericides and medicines

Aerosols and high flying jets

Atomic explosions and industrial wastes

Baloons and turbo-prop aeroplanes

Which causes water pollution?

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Smoke/fly ash

Automobile exhausts

Aeroplnes

2,4-D and pesticides

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