In the following, the most stable conformation of n-butane is:

1. 2.

3. 4.

Subtopic: Conformational Isomers |

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Q27:

Decreasing order of acidic character for cyclohexanol (I), acetic acid (II), 2, 4, 6-trinitrophenol (III) and phenol (IV), will be

1. III>II>IV>I

2. II>III>I>IV

3. II>III>IV>I

4. III>IV>II>I

Subtopic: Acidic & Basic Character |

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Q28:

Which one of the following is most reactive towards electrophilic reagent?

1.

2.

3.

4.

Subtopic: Mechanism of Dehydration, Methanol & Ethanol |

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AIPMT - 2011

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Q29:

The correct IUPAC name of the compound

1. 3-ethyl-4-ethenylheptane

2. 3-ethyl-4-propylhex-5-ene

3. 3-(1-ethyl propyl) hex-1-ene

4. 4-ethyl-3-propylhex-1-ene

Subtopic: Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |

53%

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AIPMT - 2011

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Q30:

The correct order of increasing bond length of
C-H, C-O, C-C and C=C is

1. $C - C < C = C < C - O < C - H$

2. $C - O < C - H < C - C < C = C$

3. $C - H < C - O < C - C < C = C$

4. $C - H < C = C < C - O < C - C$

Subtopic: Hybridisation & Structure of Carbon Compounds |

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AIPMT - 2011

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Q31:

Considering the state of hybridization of carbon atoms, find out the molecules among the following which is linear.

1. ${CH}_{3} - C \equiv C - {CH}_{3}$

2. ${CH}_{2} = CH - {CH}_{2} - C \equiv CH$

3. ${CH}_{3} - {CH}_{2} - {CH}_{2} - {CH}_{3}$

4. ${CH}_{3} - CH = CH - {CH}_{3}$

Subtopic: Aliphatic Hydrocarbon- Physical Properties |

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AIPMT - 2011

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Q32:

Which nomenclature is not according to IUPAC system?

1.

\underset{1 - bromo prop - 2 - ene}{Br - {CH}_{2} - CH = {CH}_{2}}

2.

3.

4.

Subtopic: Nomenclature |

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AIPMT - 2012

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Q33:

The structure of isobutyl group in an organic compound is:

1.

2. CH₃–CH₂–CH₂–CH₂–

3.

4.

Subtopic: Nomenclature |

77%

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AIPMT - 2013

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Q34:

The radical,

is aromatic because it has:

1. 7 p-orbitals and 6 unpaired electrons
2. 7 p-orbitals and 7 unpaired electrons
3. 6 p-orbitals and 7 unpaired electrons
4. 6 p-orbitals and 6 unpaired electrons

Subtopic: Aromaticity & Polarity |

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Q35:

The order of stability of the following tautomeric compounds is :

1. III > II > I
2. II > I > III
3. II > III > I
4. I > II > III

Subtopic: Isomers & Reaction Mechanism |

AIPMT - 2013

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In the following, the most stable conformation of n-butane is:

1. 2.

3. 4.

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In the following, the most stable conformation of n-butane is: 1. 2. 3. 4.

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In the following, the most stable conformation of n-butane is:

1. 2.

3. 4.