Practice free Basic Principles of Orgainc Chemistry (Chemistry) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
A compound contains 2 dissimilar asymmetric carbon atoms. The number of optically active isomers is:
(c) a = 2n; where n is no. of dissimilar asymmetric carbon atoms and a is no. of optically active isomers.
Geometrical isomerism is caused:
(a)
Due to the hindered rotation around carbon-carbon double bond, the relative positions of atoms or group attached to the doubly bonded carbon atoms get fixed.
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:
(c) The conversion of α-glucose to B-glucose is called mutarotation.
Which of the following is optically active?
Alanine is an optically active amino acid. 2-butanol is a chiral compound containing an asymmetric carbon atom, making it optically active. Lactic acid also contains an asymmetric carbon atom and is therefore optically active. Since all the given options are optically active, the correct answer is 'All of these'.
The isomerism which exists between CH3CHCl2 and CH2ClCH2Cl is:
(c) The positions of Cl are different.
Lactic acid is:
(c) Lactic acid is CH3βCαHOHCOOH, i.e., α-hydroxy propanoic acid.
On monochlorination of n-pentane, the number of isomers formed is:
(b) CH3CH2CHClCH2CH3; CH3CHClCH2CH2CH3; CH2ClCH2CH2CH2CH3
The compound which exhibits optical isomerism is:
(c) Due to asymmetric carbon atom in it.
Benzaldoxime exists in how many forms?
Total number of isomeric aldehydes and ketones that can exist with the molecular formula C5H10O:
(d) Draw all possible isomers.
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