Chemistry : Organic Chemistry – Some Basic Principles and Techniques

Most acidic is

• CH₃COOH

• C₆H₅CH₂COOH

• HCOOH

• CH₃CH₂COOH

The number of enantiomers and mesa forms for the compound , 

HOOC-CH(CH₃)-CHOH-CHBr-CHOHCH(CH₃)-COOH are respectively:

• 12 , 2

• 12 , 4

• 8 , 4

• 8 , 2

Which of the following yields as a major product is mono chlorination of ethyl benzene in the presence of light and heat.

• m- chlorotoluene

• a mixture of -O- and p-chlorotoluene

• 1-chloro-2- phenylethane

• 1-chloro -1- phenyl ethane

The correct IUPAC name of

• 4-methyoxy -2- nitrobenzaldehyde

• 4-formyl -3- nitro anisole

• 4- methoxy -6- nitrobenzaldehyde

• 2-formyl -5- methoxy nitrobenzene

The correct order of stability of carbocations, is :

• 1$°$ < 2$°$ < 3$°$ < CH₃

• $\stackrel{+}{\mathrm{C}}$H₃ < 1$°$ < 2$°$ < 3$°$

• 3$°$ < 2$°$ < 1$°$ < $\stackrel{+}{\mathrm{C}}$H₃

• 2$°$ < 3$°$ < 1$°$ < $\stackrel{+}{\mathrm{C}}$H₃

The IUPAC name of the following compound is

• bicyclo [2, 2, 0] octane

• bicyclo [0, 2, 2] hexane

• bicyclo [2, 1, 1] hexane

• bicyclo [2, 2, 0] hexane

The following compound can not exhibit

CH₃CH = CH - CH(OH).COOH

• geometrical isomerism

• optical isomerism

• metamerism

• position isomerism

Which of the following statement is not true about homolytic cleavage?

• In homolytic cleavage the movement of a single electron takes place instead of an electron pair.

• The organic reaction which proceed through homolytic bond cleavage are called ionic reactions or polar reactions

• Homolytic cleavage results in the formation of neutral species which contains an unpaired electrons

• None of the above

Which of the following has the maximum acidic strength ?

• p-nitrophenol

• p-nitrobenzoic acid

• o-nitrobenzoic acid

• m-nitrobenzoic acid

A light greenish coloured salt was soluble in water. On passing H₂S into the solution a black precipitate was obtained which dissolved readily in HCl The metal ion present is:

• Co²⁺

• Fe²⁺

• Ni²⁺

• Mn²⁺