Basic Principles of Orgainc Chemistry MCQs for NEET — Chemistry Questions with Answers

Practice free Basic Principles of Orgainc Chemistry (Chemistry) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

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α-D-glucose and β-D glucose have a specific rotation of +112° and +19° respectively. In aqueous solution the rotation becomes +52°. This process is called:

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Explanation

(c) The conversion of α-glucose and β-glucose is called mutarotation.

 

Racemic mixture is formed by mixing two:

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(d) A pair of d- l-optical isomers, i.e, enantiomer on mixing in equal moles gives racemic mixture.

A compound of molecular formula C7H16 shows optical isomerism, compound will be

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Stereoisomers (geometrical or opticals) which are neither superimposable nor mirror image to each other are called:

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Explanation

(d) It is the definition of diastereoisomers.

Diastereomers can be separated by:

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Explanation

(a) 

 

  • Recrystallization: solids that are selectively crystallized in the presence of other compounds.
  • the diastereomers have formed, is to separate them using recrystallisation. This is possible because enantiomers have shared physical properties such as melting point and boiling point, but diastereomers have different chemical properties, so they can be separated like any two different molecules.

The angle of rotation of plane of polarized light depends upon:

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Explanation

(d) Read optical activity

The process of separation of racemic mixture into d- and l-enantiomers is called:

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Explanation

(b) It is definition of resolution. 

Which of the following will exhibit chirality?             

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Explanation

(b) 3-methyl hexane contains chiral carbon atom, it exhibits chirality.

                          HCH3-CH2-C*(CH3)-CH2CH2CH3                       

Number of tertiary carbon atoms in tertiary butyl alcohol is:

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The number of isomers for the aromatic compound of the formula C7H8O is:

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