EASY
Earn 100

The specific rotation of a pure enantiomer is + 16°. Its observed rotation if it is isolated from a reaction with 25% recemisation and 75% retention is

50% studentsanswered this correctly

Important Questions on Isomerism in Organic Compounds

EASY
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
In assigning R-S configuration which among the following groups has highest priority?
EASY
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
The number of stereoisomer possible for the following compound is CH3-CH=CH-CH(Br)-CH2-CH3
MEDIUM
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
(+) 2-Methylbutan-1-ol and (-) 2- Methylbutan-1-ol have different values for which property?
EASY
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
The absolute configuration of

Question Image is:
MEDIUM
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
Which of the following compounds will exhibit geometrical isomerism?
EASY
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
With respect to the conformers of ethane, which of the following statements is true?
MEDIUM
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
3-Methyl-pent-2-ene on reaction with HBr in presence of peroxide forms an addition product. The number of possible stereoisomers for the product is
HARD
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
Among a-d, the complexes that can show geometrical isomerism are:
a PtNH33Cl+
b PtNH3Cl5-
c PtNH32ClNO2
d PtNH34ClBr2+
MEDIUM
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
Which of the following biphenyls is optically active?
MEDIUM
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
The optically inactive compound from the following is:
EASY
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
The number of chiral carbons in chloramphenicol is ____________.
MEDIUM
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
Among the following, the conformation that corresponds to the most stable conformation of meso-butane-2,3-diol is
MEDIUM
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
The number of chiral carbon centres in penicillin is _________.
EASY
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
Which one of the following statements is false?
HARD
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
Total number of isomers, considering both structural and stereoisomers, of cyclic ethers with the molecular formula C4H8O is ________
EASY
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
Among the following compounds, geometrical isomerism is exhibited by :
MEDIUM
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
Which of the following compounds produces an optically inactive compound on hydrogenation? 
MEDIUM
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
The number of stereoisomers possible for the following compound is

CH3-CH=CH-CHOH-CH3
EASY
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity
In the following structure, the double bonds are marked as I, II, III and IV. 

Question Image

 Geometrical isomerism is not possible at the site(s):
HARD
Chemistry>Organic Chemistry>Isomerism in Organic Compounds>Optical Activity

For the given compound X, the total number of optically active stereoisomers is ____.

Question Image