Question # 1

A polymer of PVC having D.P 500 has molar mass:

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6300

63000

3150

31500

The fibre which is made form acrylonitrile as monomer

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PVC

rayon fibre

acrylic fibre

polyester fibre

Chemical equilibrium involving reactants and products in more than one phase is called:

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Homogeneous

Heterogeneous

Dynamic

Static

Hydrolysis of protein by 6M HCl gives peptides and then alpha-amino acids. How many alpha-amino acids molecules are obtained on the hydrolysis of a tetrapeptide

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2

3

4

5

Electrons in 5d energy level are filled up in case of

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Lanthanides

Transition metals

Actinides

Rare gases

The relationship which describes the variation of vapour pressure with temperature is called

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Hess's law

Arrhenius equation

Kirchhoff's law

Clausius-Clapeyron equation

Monomer for acrylic resins is

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Acrylic acid

Methylmethacrylate

Acryloritrile

All

The temperature below which a gas does not exist is called its

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Inversion temperature

Critical temperature

Neutral temperature

Curie point

Which of the following decides the reactivity of alkyl halides?

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C-C bond strength

C-H bond strength

C-X bond strength

Electronegativity difference

All of the following are aliphatic amino acids except

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Glycine

Alanine

Proline

Lysine

Macromolecules or polymers are large molecules built up from small molecules called monomers. This hypothesis put forward by

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schrodixger

standinger

Lewsi

newton

The value of charge on electron is

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1.602 x 10^-19coulombs

1.602 x 10^-18coulombs

1.602 x 10^-17coulombs

1.602 x 10^-16coulombs

The electrolytic cell used for the production of metallic sodium is known as

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Down's cell

Solvary's cell

Haber's cell

None of these

Aldelydes are the oxidation product of

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P-alcohols

s-alcohols

ter-alcohols

carboxylic acids

In a group form top to bottom, the hardness of alkali metals

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Remains unchanged

Increases

Decreases

None

If acetyl chloride is reducing in the presence of BaSO₄and Pd, then

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CH₃CHO is formed

CH₃CH₂OH is formed

CH₃COOH is formed

CH₃COCH₃is formed

What will react differently with the two isomeric pentols, (CH₃)₃CCH₂OH and (CH₃)₂CH CH₂CH₂OH

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Acidified (aq) KMnO₄

Concentrated H₂SO₄

PCl

Sodium

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

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Uninfluenced by occurrence of thuderstorm

Which depends on the amount of dust in air

Slightly lower than that of rain water without thunderstorm

Slighlty higher than that when the thunderstom is not there

A solution has pH = 0, its H⁺ion concentration is

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1 x 10^-14

1 x 10¹⁴

1 x 10¹

1

Bakelite is a product formed form

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Reaction of formaldehyde with phenol

Reaction of polyethylene with phenol

Reaction of polypropylene with acid

It is a natural product

The other name of cross linked polymers is

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Linear polymer

Branched polymer

Inter connected polymers

None of these

At room temperature, the mole fraction of a solution in 0.25 and the vapour pressure of the solvent is 0.80 atm. Then the lowering of vapour pressure is

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0.75

0.512

0.80

0.0512

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