Question # 1

Reaction of acids with alcohols is also known as

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Esterification

Saponification

Alkalization

None

If a salt bridge is removed between the two half cells the voltage

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Drops to zero

Does not change

Increases gradually

Increases rapidly

Which one is primary alcohol?

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Buten-2-oI

Propan-2-oI

Butane-1-oI

2,3-Dimethylhexane-4-oI

The digestion of fats in the intestines is aided by

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Diffusion

Protection

Peptization

Emulsification

Mark the smallest atom

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F

CI

Br

I

Which of the following statement regarding catalyst is not true?

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A catalyst remains unchanged in composition and quantity at the end of the reaction

A catalyst can initiate a reaction

A catalyst dose not alter the equilibrium in a reversible reaction

Catalysts are sometimes very specific in respect of reaction

Which of the following statements is most appropriate about effective nuclear charge? It depends upon

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The shielding constant

The atomic number

The charge on the nucleus

Both the nuclear charge and the shielding constant

Which species represents the electrophile in aromatic nitrotaion?

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NO^-₂

+

NO₂

NO2

NO^-₃

The dimension of rate constant of a second order reaction involves

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Neither time nor concentration

Only time

Time and concentration

Time and square of concentration

Which of the following halogens does not forms its oxyacids?

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Fluorine

Chlorine

Bromine

Iodine

Carbon monoxide is pollutant as it

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Inactivates nerves

Inhibits glycolysis

Combines with oxygen

Combines with hemoglobin

For the carbylamine reaction we need hot alc. KOH and

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Any amin and chloroform

Chloroform and Ag powder

A primary amine and chloroform

A mono alkyl amine and trichlorom-ethane

Aluminothermy used for on the spot welding of large iron structure is based upon the fact that

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As compared to iron, aluminium has greater affinity for oxygen

As compared to aluminium, iron has greater affinity for oxygen

Refraction between aluminium and oxygen is endothermic

Reaction between iron and oxygen is endothermic.

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

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Mercury

Lead

Nitrogen oxide

Sulphur oxide

Mild oxidation of glycerol with H₂O₂/FeSO_{4 gives}

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Glyceraldehyde

Dihydroxy acetone

Glycerose

None

Which of the following species participate in sulphonation of benzene ring?

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H₂SO₄

HSO^-₃

SO₃

SO^-₂

In Friedal-Craft's alkylation besides AlCl₃the other reactants are

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C6H6 + NH3

C6H6 + CH4

C6H6 + CH3Cl

C6H6 + CH3COCl

Which one of the halogen acid is a liquid?

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HF

HCl

HBr

Hl

Dolomite has the composition

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KCL.MgCL₂.6H₂O

Na₃AIF₆

CaCO₃.MgCO₃

CaCL₂.MgCl_2.6H₂O

Tollen's reagent is

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Ammonical cuprous chloride

Ammonical cuprous oxide

Ammonical silver bromide

Ammonical silver nitrate

The credit of discovering neutron goes to

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Rutherford

Langmuir

Chadwick

Austen

Dilute hydrochloric acid solution cannot be concentrated by boiling beyond

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11%

33%

44%

22%

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