The number of primary amines of the formula C4H11N are :

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

Subtopic:  Structural Isomers |
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But-2-ene exhibits cis-trans isomerism due to-

1. Rotation around C3-C4 sigma bond

2. Rotation around  C1-C2 bond

3. Restricted rotation around C=C bond

4. Rotation around  C2-C3 double bond

Subtopic:  Stereo Isomers |
 72%
From NCERT
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The C-C bond length of the following molecules are in the order-

1. C2H6>C2H4>C6H6>C2H2

2. C2H2<C2H4<C6H6<C2H6

3. C2H6>C2H2>C6H6>C2H4

4. C2H4>C2H6>C2H2>C6H6

Subtopic:  Hybridisation & Structure of Carbon Compounds |
From NCERT
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An isomer of ethanol is-

1. Methanol 2. Diethyl ether
3. Acetone 4. Dimethyl ether
Subtopic:  Structural Isomers |
 71%
From NCERT
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The maximum number of carbon atoms arranged linearly in the molecule,  CH3-CC-CH=CH2, are -

1. 3

2. 4

3. 5

4. 6

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 52%
From NCERT
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The IUPAC name of the above mentioned compound is - 

1. p-Phenyl diphenyl

2. p-1-biphenyl benzene

3.  1,1',4',1''-terphenyl

4. Terphenyl

Subtopic:  Nomenclature |
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The hydrocarbons having the lowest dipole moment among the following is:

1. 

2. CH3 - C ≡ C - CH3

3. CH3 CH2 CH = CH2

4. CH2 = CH - C ≡ CH

Subtopic:  Aromaticity & Polarity |
 70%
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The Cl — C — Cl angles in 1,1,2,2-tetrachloroethene and tetrachloromethane will be about :

1. 120° and 109.5°

2. 90° and 109.5°

3. 109.5° and 90°

4. 109.5° and 120°

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 62%
From NCERT
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The compound with an isopropyl group is-

1. 2,2,3,3-Tetramethylpentane

2. 2,2-Dimethylpentane

3. 2,2,3-Trimethylpentane

4. 2-Methylpentane

Subtopic:  Nomenclature |
 68%
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The enolic form of an acetone contains:

1. 9 sigma bonds, 1 pi bond, and 2 lone pairs of electrons

2. 8 sigma bonds, 2 pi bonds, and 2 lone pairs of electrons

3. 10 sigma bonds, 1 pi bond, and 1 lone pair of electrons

4. 9 sigma bonds, 2 pi bonds, and 1 lone pair of electrons

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 77%
From NCERT
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