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An optically active compound $A$ , gave an ${[α]}_{D}^{25} = 30 °,$ while a mixture of $A$ and its enantiomer $B,$ gave ${[α]}_{D}^{25} = + 15 ° .$ The ratio of $A$ and $B$ in the mixture is

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Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

Which one of the following statements is false?

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

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

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

In assigning R-S configuration which among the following groups has highest priority?

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

The absolute configuration of

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is:

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

Which of the following biphenyls is optically active?

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

With respect to the conformers of ethane, which of the following statements is true?

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

(+) 2-Methylbutan-1-ol and (-) 2- Methylbutan-1-ol have different values for which property?

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

Among

(a) - (d),

the complexes that can show geometrical isomerism are:

(a)

{[P t {(N H_{3})}_{3} C l]}^{+}

(b)

{[P t (N H_{3}) C l_{5}]}^{-}

(c)

[P t {(N H_{3})}_{2} C l (N O_{2})]

(d)

{[P t {(N H_{3})}_{4} C l B r]}^{2 +}

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

The optically inactive compound from the following is:

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

The number of stereoisomers possible for the following compound is

C H_{3} - C H = C H - C H (O H) - C H_{3}

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

The number of chiral carbons in chloramphenicol is ____________.

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

Among the following, the conformation that corresponds to the most stable conformation of meso-butane-

2, 3

-diol is

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

The number of chiral carbon centres in penicillin is _________.

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

In the following structure, the double bonds are marked as

I, II, III

and

IV

Geometrical isomerism is not possible at the site(s):

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

Total number of isomers, considering both structural and stereoisomers, of cyclic ethers with the molecular formula

C_{4} H_{8} O

is ________

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

Among the following compounds, geometrical isomerism is exhibited by :

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

Which of the following compounds produces an optically inactive compound on hydrogenation?

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

The number of stereoisomer possible for the following compound is

{CH}_{3} - CH = CH - CH (Br) - {CH}_{2} - {CH}_{3}

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

Which of the following compounds will exhibit geometrical isomerism?

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Chemistry>Organic Chemistry>Organic Chemistry- Some Basic Principles and Techniques>Some Other Terms Related to Stereoisomers

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

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An optically active compound A, gave an αD25=30°, while a mixture of A and its enantiomer B, gave αD25=+15°. The ratio of A and B in the mixture is

Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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An optically active compound $A$ , gave an ${[α]}_{D}^{25} = 30 °,$ while a mixture of $A$ and its enantiomer $B,$ gave ${[α]}_{D}^{25} = + 15 ° .$ The ratio of $A$ and $B$ in the mixture is