Question # 1

Benzene in the presence of AICl3 produces acetophenone when reacts with

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AcetyI chloride

EthyI benzene

Acetic acid

Ethanoic acic

Which of the following is derived lipid

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Sterols

Vit D

Terpenes

All

Water exist in only

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One state

Two state

Three states

4 states

Esters have fruity smell and are used as artificial favours. Amyl acetate gives flavour of

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Banana

Jasmine

Pineapple

Orange

A real gas obeying van der Waals equation will resemble ideal gas if

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Both a and b are large

a is large and b is small

Both a and b are small

a is small and b is large

SN2-reactions can be usually observed in

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Primary alkylı halide

secondary alkyl halide

Tertiary alkyl halide

Both A. and B

Amorphous solids

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have sharp melting points

undergo clean cleavage when cut with knife

have perfect arrangement of atoms

can possesses small regions of orderly arrangements of atoms

An example of simple protein is

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lipoprotein

Cholesterol

lecithin

globulin

Triple point of water is

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273 K

373 K

203 K

193 K

Enzymes consist of

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proteins only

proteins and non-protein parts

fats only

futs and non-fatty components

Oxidation state of Mn' in KMnO4. K2MnO4, MnO2 and MnSO4 is in the order

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+7.+6.+2,+4

+6,+7,+2,+4

+7. +6.+4.+2

+4, +6, +7,+2

Which one does not declourized KMnO₄

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Alkenes

Alkynes

Bezene

All above

Which of the following salt is soluble in water

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CaCO₃

CaSO₄

MgSO₄

BaSO₄

Equal volumes of ethylene glycol (molar mass = 62) and water (molar mass = 18) are mixed. The depression in freezing point of water is (given K_rof water = 1.86 K mol^-1kg and specific gravity of ethylene glycol is 1.11)

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0.003

3.33

0.333

33.3

Transition metals mostly are

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Diamagnetic

Paramagnetic

Neither diamagnetic nor paramagnetic

Both diamagnetic and paramagnetic

Which of the following reactions occur at moderate rate :

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Rusting of iron

Chemical weathering of stone work of buildings by acidic gases in atmosphere.

Hydrolysis of an ester

Fermentation of sugars

A dry alkaline cell has porous Zn anode and MnO₂as cathode the electrolyte used is

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Ca(OH)₂

NaOH

KOH

NH₄OH

To prepare ethanol by fernentation the optimum temp. is

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10 - 20°C

25 - 30°C

20°C

35°C

Phenol is used in the preparation of

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Bakelite

Phenatherene

Cellulose

All of these

Concentration of rectified spirit is:

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12%

14%

90%

95%

The total number of transition elements is

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10

14

40

50

Nitration of phenol gives

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o-nitrophenol

p-nitrophenol

m-nitrophenol

Both o and p-nitrophenol

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