${CH}_{3} - \underset{OH}{\underset{|}{CH}} - \underset{OH}{\underset{|}{CH}} - {CH}_{2} - {CH}_{3}$

How many optical isomers are possible in this compound ?

1. 2

2. 3

3. 4

4. 5

Subtopic: Stereo Isomers |

65%

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Q73:

The numbers of stereoisomers possible for $HOOC - {(CHOH)}_{4} - COOH$ is :

1. 32

2. 16

3. 14

4. 10

Subtopic: Stereo Isomers |

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Q74:

Indicate whether each of the following pairs are identical, or enantiomers and diastereomers ?

	I	II	III
1.	enantiomers	diastereomers	enantiomers
2.	identical	enantiomers	enantiomers
3.	enantiomers	diastereomers	identical
4.	enantiomers	identical	identical

Subtopic: Stereo Isomers |

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2

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Q75:

Which conformational form of 2-Fluoro ethanol is most stable ?

1. Anti

2. Partially eclipsed

3. Full eclipsed

4. Gauche

Subtopic: Stereo Isomers |

57%

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Q76:

Total number of optical isomers obtained after monohalogenation of 3-Methylpentane are-

1. 2

2. 4

3. 6

4. 8

Subtopic: Stereo Isomers |

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Q77:

has the configuration

1. R,R

2. S,S

3. R,S

4. May be 1 or 2

Subtopic: Stereo Isomers |

57%

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Q78:

$C_{4} H_{6}$ may have

1. One triple bond

2. Two double bonds

3. Two cycles

4. All of the above

Subtopic: Hybridisation & Structure of Carbon Compounds |

72%

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Q79:

The number of chain isomers for $C_{5} H_{12}$ and $C_{6} H_{14}$ are, respectively :

1. 3,3
2. 3,5
3. 4,4
4. 3,4

Subtopic: Structural Isomers |

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Q80:

Total isomers for $C_{4} H_{10} O$ are-

1. 4

2. 5

3. 7

4. 8

Subtopic: Structural Isomers |

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Q81:

Which of the following is the most stable carbocation?

1. 2.

3. ${({CH}_{3})}_{3} \overset{+}{C}$ 4. ${CH}_{2} = CH - \overset{\oplus}{C} H_{2}$

Subtopic: Electron Displacement Effects |

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${CH}_{3} - \underset{OH}{\underset{|}{CH}} - \underset{OH}{\underset{|}{CH}} - {CH}_{2} - {CH}_{3}$

How many optical isomers are possible in this compound ?

1. 2

2. 3

3. 4

4. 5

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CH3-CH|OH-CH|OH-CH2-CH3 How many optical isomers are possible in this compound ? 1. 2 2. 3 3. 4 4. 5

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${CH}_{3} - \underset{OH}{\underset{|}{CH}} - \underset{OH}{\underset{|}{CH}} - {CH}_{2} - {CH}_{3}$

How many optical isomers are possible in this compound ?

1. 2

2. 3

3. 4

4. 5