In the dehydration reaction,
    CH3CONH2P2O5CH3CN,
the hybridization state of carbon changes from:

(1) sp3 to sp2

(2) sp to sp

(3) sp2 to sp

(4) sp to sp3

Subtopic:  conversion chart for n to n carbon |
 85%
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The reagent used in dehydrohalogenation process is:

(1) alcoholic KOH

(2) NaNH2

(3) C2H5ONa

(4) all of these

Subtopic:  conversion chart for n to n carbon |
 73%
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The reaction, CH2=CHCHOHXgives:

(1) CH3CHXCHO

(2) CH2XCHCHO

(3) CH2=CHCHX2

(4) none of these

Subtopic:  Differentiation of Organic Compound |
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The reagent used in dehalogenation process is:

1. KOH alc.

2. Zn dust+ alc.

3. Na

4. KOH(aq)

Subtopic:  conversion chart for n to n carbon |
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Zn-Cu couple used as reducing agent is:

(1) mixture of Zn and Cu powder

(2) copper deposited on granulated zinc

(3) Zn deposited on copper fillings

(4) a rod half made of copper and half made of zinc

Subtopic:  Oxidizing & Reducing Agents |
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Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

(1) Chlorination, nitration, reduction

(2) Nitration, chlorination, reduction

(3) Nitration, reduction, chlorination

(4) Nitration, reduction, acylation, chlorination, hydrolysis

Subtopic:  Aromatic Conversion |
 57%
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An unknown compound A has a molecular formula C4H6. When A is treated with excess of Br2 a new substance B with formula C4H6Br4 is formed. A forms a white ppt. with ammoniacal silver nitrate solution. A may be-

1. But-1-yne

2. But-2-yne

3. But-1-ene

4. But-2-ene

Subtopic:  Differentiation of Organic Compound |
 63%
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The appropriate reagent for the following transformation,

  is :

 

(1) Zn(Hg),HCl

(2) NH2NH2, OH-

(3) H2/Ni

(4) NaBH4

Subtopic:  Differentiation of Organic Compound |
 61%
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Which compound would give 5-keto-2-methyl hexanal upon ozonolysis?

1. 2.
3.

Subtopic:  Aldehydes & Ketones |
 67%
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The reduction of an alkyne to alkene using Lindlar's catalyst results into:

(1) cis-addition of hydrogen atoms

(2) trans-addition of hydrogen atoms

(3) a mixture obtained by cis- and trans-additions of hydrogen which are in equilibrium with each other

(4) a mixture obtained by cis- and trans-additions of hydrogen atoms which are not in equilibrium with each other.

Subtopic:  Differentiation of Organic Compound |
 66%
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