Question # 1

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It decolourises aqueous bromine rapidly

It is insoluble in water

It reduces Fehling's reagent

Two molecules react with each other in the presence of a strong acid

Which of the following sulphates has the highest solubility in water

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BaSO₄

CaSO₄

MgSO₄

BeSO₄

During the preparation of alkanes the hydrogenation of alkenes or alkynes the catalyst may be

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H₂SO₄

Ni

Fe₂O₃

Al₂O₃

When fused PbBr2 is electrolyzed :

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Lead appears at anode.

Lead appears at cathode.

Bromine appears at cathode.

Lead appears at both electrodes.

Organic synthetic or man made polymers are plastics, rubber and fibre. Which is not a synthetic polymer

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Silk

Polyester

Polyvinyl chloride

Nylon

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Zero

1

2

1.5

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Acidic amino acid

Basic amino acid

Neutral amino acid

None of these

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A strong reducing agent

A strong oxidising agent

Better oxidising agent than hydrogen

Less reducing agent than hydrogen

The charge over mass ratio of electron is:

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1.6 x 10^-1 C Kg^-1

9.1 x 10^-31 C Kg^-1

1.7588 x 10¹¹ C Kg^-1

6.62 x 10^-34 C Kg^-1

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+712 KJ mol^-1

+492 KJ mol^-1

-932 KJ mol^-1

-960 KJ mol^-1

CuSO₄. 5H₂O is used to prepare

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Transition complex

Fehling's 'A' sol

Fehling's 'B' sol

Fehling's sol

An organic compound A reacts with methyl magnesium iodide to form an addition product which on hydrolysis forms the compound B . Compound B gives blue colour salt in Victor Meyer's test.The compounds A and B are respectively

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Acetaldehyde, tertiary butyl alcohol

Acetaldehyde, ethyl alcohol

Acetaldehyde, isopropyl alcohol

Acetone, isopropyl alcohol

Grignard reagent on reaction with a ketone forms

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Tertiary alcohol

Secondary alcohol

Primary alcohol

Carboxylic acid

Which of the following element's outermost orbits last electron has magnetic quantum number m=0?

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Na

O

Cl

N

Which has highest 1st I.E.

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Br

Cl

F

l

Which one of the following has no units of its K_cvalue

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The number of electron pairs shared in carbon tetrachloride molecule is

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2

3

4

1

Aluminium oxide is:

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Acidic oxide

Basic oxide

Amphoteric oxided

None of these

Partial pressure of a solution component is directly proportional to its mole fraction. This statement is known as

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Henry's law

Raoult's law

Distribution law

Ostwald's dilution law

The % of CO₂is the atmosphere is

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3.0%

0.03%

0.3%

0.5%

Which of the following are thermoplastic materials

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PVC

Polystyrenes

Polyethylene

All these

Polyester resins have special use in:

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Clothing

Paints

Emulsion

Floor covering

The fibre which is made form acrylonitrile as monomer

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PVC

Rayon fibre

Acrylic fibre

Polyester fibre

______ gives peroxide

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Li

Ba

Sr

Be

The temperature at which the vapour pressure of a liquid becomes equal to external pressure is

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Melting point

Sublimation point

Inversion point

Boiling point

The human body can synthesize ______ amino acids

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1

10

20

19

The degree of polarity of molecule is known as its

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Dipole moment

Moment arm

Bond energy

Ionic character

A condensation polymer among the following is

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Dacron

PVC

Polysterene

Teflon

Grignard's reagent on treatment with chloramine give

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Acetamide

Primary amice

Secondary amice

Urea

Camphor is often used in molecular mass determination because

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It is solvent for organic substances

It is readily available

It has a very high cryoscopic constant

It is volatile

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2, 3-dimethylbutane

2, 3-methylbutane

2-dimethylbutane

Dimethylbutane

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