Question # 1

Hydrolysis of alkyl nitriles gives:

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Alkane

Alkyl halide

Alkyl nitride

Minerals acids & Alkalies

Nylon 6,6 is a condensation polymer of:

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Phthalic acid and hexa ethylene diamine

adipic acid and hexaethylene diamine

phthalic acid and glycerol

Plastics are a pollution problem because many plastics

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are made from petroleum

are very inflammable

burn to produce toxic fumes

decompose to produce toxic products

Collagen contains high percentage of

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Glycine

Tryptophan

Phenyl Alanine

Serine

When wine is put in air, it becomes sour due to

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Oxidation of C2H5OH

Formation of C2H5NH2

Reduction of C2H5OH

Dissolution of CO2

Most harmful of biosphere is

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Deforestation

Nuclear fail out

Salinity

Water logging

Li resembles with Mg, because

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the ratio of their charge to size is nearly the same

both have nearly same size

both are metallic in nature

both are found together in nature

The solubility product is only applicable for those substance whose molar concentrations is

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0.01

Equal to 1

Less than 0.01

Greater than 10

Water may boil at 170C when external pressure is

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760 torr

170 torr

2115 torr

700 torr

The eleventh concentration of metal cause clogs of gills in fish:

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Al

He

Pb

Ca

The fiber which is made from acrylonitrile as monomers:

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PVC

rayon fiber

acrylic fiber

Polyester fiber

The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with the rule

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Hund's rule

Markowvikov's rule

Pauli's exclusion principle

Auf ban principle

Which of the following substances is used as an antiknock compound?

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Tetraethyl lead

Lead tetrachloride

Lead acetate

Ethyle acetate

Compounds X, Y and Z, all react with PCI₅to release hydrogen chloride, but only one of them reacts eith 2,4-dinitrophenylhydrazine reagent. Which one of the following combinations could be X, Y and Z

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Number of elements present in 5th period is

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8

18

32

24

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High temperature

Low temperature

Low pressure

High pressure

Each vertical column of the periodic table includes elements with chemical characteristics that are in general

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Identical

Similar

Different

Similar as well as different

Pro stand for

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Valine

Alamine

Glycine

Proline

The region of earth capable of supporting life is

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Hydrosphere

Lithosphere

Biosphere

Atmosphere

Which is in differnet phase form other metals

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Ni

Hg

Cd

Na

The process in which water molecules surround solute particles is called

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Hydration

Salvation

Hydrolysis

Dehydration

If pH of buffer of 1 mole dm^-3of HCOOH + 0.1 mole dm^-3HCOONa having pKa = 3.78 is

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1.78

2.78

3.78

4.78

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