Question # 1

When 2-bromobutane reacts with alcoholic KOH, the reaction is called

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Chlorination

Halogenation

Dehydrohalogenation

Hydrogenation

The structure of sodium chloride is

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simple cube

body centered cubic

face centered cubic

depends upon conditions

Reaction of alcohol with hydrogen chloride, in the presence of Zinc chloride yields

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Ketone

Carboxylic

Alkyl halide

Ester

Which among the following will show anisotropy?

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Wood

Glass

Paper

BeCl2

The net heat change in a chemical reaction is the same whether it is brought about in two or more different ways in one or several steps.it is known as

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Henry's law

Hess's law

joule's law

Law of conservation of energy

If the distance between Na⁺ and CI^- ions in sodium chloride crystal is X pm,the length of the edge of the unit cell is

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4X om

X/4 pm

X/2 pm

2X pm

A doubly bonded carbon is

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cannot be sp2 hybridized

can be sp hybridized

can attach with three carbons

can attach with three hydrogens

The value of R in term of dm³torr k^-1mol^-1

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62400

62.4

8.313

0.0821

Select the name of reedy plant from which word paper is derived:

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Sunflower

Water hyacinth

Papyrus

Rose

Compared with alkaline earth metals, the alkali metals exhibit.

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lower ionization energies

greater hardness

high boiling point

smaller ionic radii

Which is the correct order of boiling points

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structure of ice

solution of ethanol in water

solution o fNaCl in benzene

linking of helix protein molecule

An organic compound will decolorise dill acidified (aq) KMnO₄on warming, but will not decolorise bromine water. What is the compound

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KMnO₄

Ethanol

Ethane

CH₃CH₂Cl

Units of Kw are

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Mole dm^-3

Mole²dm^-3

Mole²dm^-6

Mole²dm^-3

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

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Combining with oxygen to form carbon dioxide

Destruction of hemoglobin

Preventing reaction between oxygen and hemoglobin

Forming stable compound with hemoglobin

Which of the following factors does not influenced the rate of reaction

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Concentration of the reaction

Nature of the reactants

Molecularity of the reaction

Temperature

Which alcohol may be oxidised to a product which react with 2,4-dinitorphenylhydrazine reagent but not with Fehling's reagent

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Butan-1-ol

Butan-2-ol

2-methylpropan-1-ol

2-methylpropan-2-ol

Aspirin is

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Acetyl salicylic acid

Phenyl salicylic acid

Salicylic acid

Benzoic acid

XeF₄has shape of

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Sphere

Trigonal bipyramidal

Tetrahedral

Square planar

Plastics are pollution problem because many plastics:

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Are made from petroleleum

Are very inflammable

Burn to produce toxic funes

Decompose to produce toxic products

Which is not an enzyme

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Transverses

Lipase

Lyase

None of these

The standard enthalpy change in the formation of 1 mole of a compound from its elements in their standard physical states is

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Enthalpy of formation

Enthalpy of atomization

Enthalpy of neutralization

Internal energy change

Borax is hydrated:

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Penta

Deca

Hepta

Octa

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