Question # 1

In nucleophilie substitution bimolecular reaction the order of reaction with respect to substrate

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2 order

3 order

1st order

Zero order

Which of the following is primary alkyl halide

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IsopropyI halide

Sec-butyl halide

Tert-buryi halide

Neo-pentyl halide

The acidity of phenol is due to its

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Nature of Benzene

Double bond in benzene ring

Natute of phenoxide ion

Hydroxyl group

Ethyl alcohol reacts with PCL and produces:

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Haloalkane

Alkyl halide & H3PO3,

Alkyl halide & POCl3

Alkyl halides &H3PO4.

When purely alcoholic solution of sodium/potassiumhydroxide and halogenoalkanes are reacted an alkene is formed, what is the mechanism of reaction?

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Elimination

Debromination

Dehydration

Reduction

What is true about an alcohol and phenol

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Both are more acidic than water

Both react with NaOH

Both produce CO2 with Na2CO3

Both, produce H2 with Na

In elimination reaction i.e, in the formation of alkene, the reactivity of alkyl halide is in the order:

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CI>Br>I

I>Br>Cl

Br>CI>I

I>CI> Br

The starting substance for the preparation of iodoform is any of the following, except

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СН3СН(ОН)CН3

CH3CH2ОН

HCH2OH

CH3COCH3

Which of the following alkyl halides undergoes SN1 reaction fastest

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Methyl chloride

Isobutyl chlorido

Ethy l chloride

Tertiary butyl chloride

Which of the following does not give yellow precipitate with I2+ NaOH

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Acetone

Benzaldehyde

Acetildehyde

Acetophenone

Which one of the following is NOT a nucleophile

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NH2+

BF3

H2O

CH3-

Which of the following gives silver mirror with ammonicaT AgNO3

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Benzyl alcohol

Benzene

Benzoic acid

Benzaldehyde

Which one of the following is not associated with SN2 mechanism

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100 % inversion of configuration

Tertiar alkyI halides

2nd order kinetics

Change of hy bridization from sp³ to sp² in transition state

.Both aldehydes and ketones are planar to the neighborhoods of carbonyl (C-0) group. Which one of the following bonds is distorted towards the oxygen atoms?

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pi-bond of C and O

Sigma bond of C and O

Sigma bond of C and H

Sigma bond of C and C

Formalin contains-------% alcohol.

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37

80

8

52

The conversion of tertiary alcohols into alkenes in the presence of K2Cr2O7 + H2SO4 is

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Addition reaction

C-H bond cleavage

Elimination reaction

Combustion reaction

The average bond energy of C-Br is

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228 kJmol-1

250 kJmol-1

200 kJmol-1

290 kJmol-1

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

Temperature required for the dehydration of ethanol into ethene in the presence of HaSOu is

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130°C

170°C

175°C

180°C

Consider the following reaction
R-CHO + 2Ag(NH3)2OH + R-COONH+ +2Ag+2NH3+H2OThis reaction represents

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Fehling test

Ninhydrin test

Benedict lest

Tollen's test

Which of the following reactants will be required to form ethene from ethyl chloride

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_{Alcoholic KOH}

Alkaline KMnO4

Aqucous KOH

Aqucous NaOH

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