What is produced when Br2 is added to cis-but-2-ene?

1. Racemic mixture of 2,3-Dibromobutane

2. Meso form of 2,3-Dibromobutane

3. Dextro form of 2,3-Dibromobutane

4. Laevo form of 2,3-Dibromobutane 

Subtopic:  Isomerism & Chirality |
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When (CH3)3CMgCl reacts with D2O, it produces:

1. (CH3)3CD 2. (CH3)3OD
3. (CD3)3CD 4. (CD3)3OD
Subtopic:  Chemical Properties |
 72%
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The product X in the below mentioned reaction is:

1.  2.
3. 4.
Subtopic:  Mechanism of Reactions |
 76%
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Chloroform is kept in dark-colored bottles because:
1. It is inflammable. 2. It gives a peroxide.
3. It undergoes rapid chlorination. 4. It is oxidized to poisonous phosgene.

Subtopic:  Iodoform, Freons & DDT |
 83%
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The reactivity order of alkyl halides depends upon:

1. Nature of alkyl group only

2. Nature of halogen atom only

3. Nature of both alkyl group and a halogen atom

4. None of the above

Subtopic:  Chemical Properties |
 86%
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Which of the following reactions cannot form new carbon-carbon bonds?

1. Reimer-Tiemann reaction

2. Cannizaro reaction

3. Wurtz reaction

4. Friedel-Crafts acylation

Subtopic:  Mechanism of Reactions |
 62%
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AIPMT - 2010
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Which of the options is correct about product (A)?

1. Product is aromatic  

2. Product has a high dipole moment

3. Product has less resonance energy          

4. Both A and B

Subtopic:  Chemical Properties |
 71%
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Sandmeyer's reaction described by among the following is:

1. 
2. 
3. 
4.   

Subtopic:  Mechanism of Reactions | Chemical Properties |
 90%
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The X and Y in the below mentioned reaction are

X Y
1. Dilute aqueous NaOH, 20 oC HBr/Acetic acid, 20 oC
2. Concentrated alcoholic NaOH, 80 oC HBr/Acetic acid, 20 oC
3. Diluted aqueous NaOH, 20 oC, Br2 / CHCl3 , 0 oC
4. Concentrated alcoholic NaOH, 80 ° C Br2/CHCl3, 0 oC
Subtopic:  Chemical Properties |
 67%
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When vinyl chloride is passed through an alcoholic KOH solution, which of the following is correct?

1. It gets dissolved.                              

2. It forms vinyl alcohol

3. It forms acetylene                     

4. It has no action

Subtopic:  Chemical Properties |
 68%
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