Ethylidene dichloride on treatment with aqueous KOH gives:

(1) CH3CHO

(2) CH2OH|CH2OH

(3) HCHO

(4) CHO|CHO

Subtopic:  Mechanism of Reactions |
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Mark the appropriate reagent used to distinguish vicinal and geminal dihalides.:

1. KOH (aq.) 2. KOH(alc.)
3. Zn dust 4. None of these
Subtopic:  Mechanism of Reactions |
From NCERT
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A compound A of formula C3H6Cl2 on reaction with alkali can give B of formula C3H6O or C of formula C3H4. B on oxidation gave a compound of the formula C3H6O2. C with dilute H2SOcontaining Hg2+ ion gave D of formula C3H6O, which with bromine and NaOH gave the sodium salt of C2H4O2. Then A is:

1. CH3CH2CHCl2

2. CH3CCl2CH3

3. CH3CHClCH2Cl

4. CH2ClCH2CH2Cl

Subtopic:  Mechanism of Reactions |
 59%
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Ethylene on treatment with chlorine gives:-

1. Ethylene dichloride

2. Ethylene chlorohydrin

3. CH4

4. C2H6

Subtopic:  Mechanism of Reactions |
 86%
From NCERT
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The compound A forms B with sodium metal and again A forms C with PCl5, but B and C form diethyl ether. Thus A, B and C are:

(1) C2H5OH, C2H5ONa , C2H5Cl

(2) C2H5OH, C2H5Cl, C2H5ONa

(3) C2H5OH, C2H5Cl, C2H4Cl2

(4) C2H5OH, C2H5Cl, C2H5OC2H5

Subtopic:  Mechanism of Reactions |
 82%
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The halide which undergoes nucleophilic substitution most readily is:

(1) p-H3CC6H4Cl

(2) o-H3COC6H4Cl

(3) p-ClC6H4Cl

(4) p-O2NC6H4Cl

Subtopic:  Mechanism of Reactions | Chemical Properties |
 69%
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Which chloro derivative of benzene among the following would undergo hydrolysis most readily with aqueous NaOH to furnish the corresponding hydroxy derivative?

1. 

2. 

3. 

4. C6H5Cl

Subtopic:  Mechanism of Reactions |
 75%
From NCERT
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Which would be least reactive towards bromine?

(1) Nitrobenzene

(2) Anisole

(3) Phenol

(4) Chlorobenzene

Subtopic:  Chemical Properties |
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Chlorobenzene is prepared commercially by:

1. Grignard reaction

2. Raschig process

3. Wurtz-Fittig reaction

4. Friedel-Crafts reaction

Subtopic:  Mechanism of Reactions | Chemical Properties |
 51%
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Compound (A), C8H9Br, gives a white precipitate when warmed with alcoholic AgNO3. Oxidation of (A) gives an acid (B), C8H6O4. (B) easily forms anhydride on heating. Identify the compound (A).

1. 

2. 

3. 

4. 

Subtopic:  Mechanism of Reactions |
 63%
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