The number of primary carbon atoms in the following compound are:

1. 6 2. 2
3. 4 4. 3

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 86%
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4-methylpent-2-ene is  achiral because it has:

1. a centre of symmetry 

2. a plane of symmetry 

3. symmetry at C 4 carbon

4. both centre and a plane of symmetry 

Subtopic:  Stereo Isomers |
 54%
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The (R)- and (S)-enantiomers of an optically active compound differ in

1. their solubility in a chiral solvent

2. their reactivity with a chiral reagent

3. their optical rotation of plane polarised light

4. their melting points

Subtopic:  Stereo Isomers |
 90%
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The cylindrical shape of an alkyne is due to the presence of- 

1. Three sigma C-C bonds

2. Three π C-C bonds

3. Two sigma C-C and one π C-C bonds

4. One sigma C-C and two π C-C bonds

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 80%
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What is decreasing order of basicity of 1°, 2° and 3° ethyl amines and ammonia in aqueous medium?          

1. NH3>C2H5NH2>(C2H5)2NH>(C2H5)3N

2. (C2H5)3N>(C2H5)2NH>C2H5NH2> NH3

3. (C2H5)3NH>C2H5NH2>(C2H5)3N>NH3

4. (C2H5)2NH>(C2H5)3N>C2H5NH2>NH3

Subtopic:  Acidic & Basic Character |
 58%
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The shortest C-C bond distance is found in               

1. Diamond             

2. Ethane

3. Benzene             

4. Acetylene

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 66%
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Which of the following is more basic than aniline?                    

1. Diphenylamine

2. Triphenylamine

3. p-nitroaniline

4. Benzylamine

Subtopic:  Acidic & Basic Character |
 61%
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Which one of the following has the shortest carbon-carbon bond length?                      

1. Benzene                     

2. Ethene

3. Ethyne                         

4. Ethane

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 86%
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Which one of the following compounds is most acidic?                                   

1. 

2. 

3. 

4. 

Subtopic:  Acidic & Basic Character |
 84%
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Which of the following represents the correct order of acidity in the given compounds?

1. FCH2COOH > CH3COOH > BrCH2COOH > ClCH2COOH

2. BrCH2COOH > ClCH2COOH > FCH2COOH > CH3COOH

3. FCH2COOH > ClCH2COOH > BrCH2COOH > CH3COOH

4. CH3COOH > BrCH2COOH > ClCH2COOH > FCH2COOH 

Subtopic:  Acidic & Basic Character |
 86%
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