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The structures that do not actually exis...

The structures that do not actually exist are called:

A

Tautomers

B

Conformational isomers

C

Canonical structures

D

Optical isomers

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The correct Answer is:
C
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MBD PUBLICATION-ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES AND TECHNIQUES-QUESTION TYPE
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  2. In butane, which of the following form has the least stable ?

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  3. The structures that do not actually exist are called:

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  4. Which of the following will have least hindered rotation about C-C bon...

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  5. The strongest base and nucleophile among the following is:

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  6. The number of pi- electrons present in cyclobutasdienyl anion (C4H4)^2...

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  7. Removal of hydrogen atom is easier when it is attached to:

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  8. Unpaired electron in CH3 occupies:

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  9. Which one of the following will most readily be dehydrated in acidic c...

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  10. Dichloro ethylene shows:

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  11. "The negative part of the addendum adds on the carbon atom joined to t...

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  12. The production of an optically active compound from a symmetric molecu...

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  13. Heterolysis of propane gives:

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  14. Which one of the following is found in alkenes ?

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  15. The maximum number of positional isomers for an alkene with molecular...

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  16. The process of separation of racemic mixture into d- and l-enantiomers...

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  17. In which of the following species the central carbon atom is negativel...

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  18. The number of different substitution products possible when ethane is ...

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  19. Which of the following contains only three pairs of electrons ?

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  20. Which of the following is optically active?

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