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Which of the following molecules can be ...

Which of the following molecules can be optically active

A

`CH_2 = C = CH_2`

B

`CH_2 = C = CHCl`

C

`ClCH = C = CHCl`

D

all the above

Text Solution

Verified by Experts

The correct Answer is:
C


Allens are optically active even though they do not have any chiral centre but acts as chiral molecule due to the presence of chiral axis. Hence allenes with different substituted atoms are optically active.
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AAKASH SERIES-ISOMERISM -ADDITIONAL PRACTICE EXERCISE (LEVEL-I(MAIN) STRAIGHT OBJECTIVE TYPE QUESTIONS)
  1. Which of the following statements best explain (s) the relationship be...

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  2. Total number of stereoisomers of the following compound is CHCl=CH-CH(...

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  3. Which of the following molecules can be optically active

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  4. Butyne and Butadiene are

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  5. The number of geometrical isomers of CH3CH=CH-CH-CH=CH-Cl

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  6. Which of the following compounds can exhibit geometrical isomerism?

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  7. A similarity between optical and geometrical isomerism is that

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  8. Which of the following compounds exhibits stereo isomerism

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  9. The number of carbon atoms present in a smallest alkane which can exhi...

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  10. A compound with molecular formula, C7 H(16)shows optical isomerism, th...

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  11. The number of enantiomers of the compound CH(3)CHBrCHBrCOOH is

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  12. Assertion (A): The boiling point of cis-2-butene is more than trans-2-...

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  13. Assertion(A): Lactic acid is optically active compound Reason (R): I...

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  14. The chirality of the compounds H(3)C=overset(Br)overset(|)underset(Cl)...

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  15. The compounds A, B, C have R or S configurations respectively

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  16. Total number of stereoisomers of the following compound is CHCl=CH-CH(...

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  17. Total number of stereoisomers of the following compound is CHCl=CH-CH(...

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  18. Isopentane can form four structurally isomeric mono bromo derivatives....

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  19. Optically active compounds among the following is

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  20. Which of the following form diastereomeric pair?

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