An organic compound A reacts with sodium metal and forms B. On heating with conc. H2SO4, A gives diethyl ether. So A and B are:
1. C3H7OH and CH3ONa
2. CH3OH and CH3ONa
3. C4H9OH and C4H9ONa
4. C2H5OH and C2H5ONa

Subtopic:  Alcohols: Preparation & Properties | Mechanism of Dehydration, Methanol & Ethanol |
 79%
From NCERT
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Widespread deaths due to liquor poisoning occur due to the presence of-
1. Lead compounds in liquor 2. Methyl alcohol in liquor
3. Ethyl alcohol in liquor 4. Carbonic acid in liquor
Subtopic:  Mechanism of Dehydration, Methanol & Ethanol |
 78%
From NCERT
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Upon dehydration, the below mentioned compound will not give:

1.  2.  
3.    4.  
Subtopic:  Mechanism of Dehydration, Methanol & Ethanol |
 74%
From NCERT
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Consider the following alcohols,

I.
II.
III.
IV.

Ease of dehydration of the above alcohols will be in the order of-

1. I < II < III < IV 2. I > II > III > IV
3. III  < II < I < IV 4. II < III < IV < I
Subtopic:  Mechanism of Dehydration, Methanol & Ethanol |
 64%
From NCERT
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The best method to prepare cyclohexene from cyclohexanol is by using:

1. conc. HCl + ZnCl2 2. conc. H3PO4
3. HBr 4. conc. HCl
Subtopic:  Alcohols: Preparation & Properties | Mechanism of Dehydration, Methanol & Ethanol |
 69%
From NCERT
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"A" and "B" are respectively:

 
A B
1.     
2. 
3.   
4.   

Subtopic:  Mechanism of Dehydration, Methanol & Ethanol |
 57%
From NCERT
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The correct order of dehydration of compounds (i), (ii) and (iii) by conc. H2SO4 is:

(i) 
(ii) 
(iii)

1. (i) > (iii) > (ii)                                             

2. (i) > (ii) > (iii)

3. (ii) > (i) > (iii)                                             

4. (ii) > (iii) > (i)

Subtopic:  Mechanism of Dehydration, Methanol & Ethanol |
 62%
From NCERT
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Optically active 2-octanol rapidly loses its optical activity when exposed to :

1. Dilute acid 2. Dilute base
3. Light 4. Humidity
Subtopic:  Alcohols: Preparation & Properties | Mechanism of Dehydration, Methanol & Ethanol |
 57%
From NCERT
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The most reactive compound among the following toward electrophilic aromatic substitution reaction is:

1.  2.
3.   4.   
 

Subtopic:  Mechanism of Dehydration, Methanol & Ethanol |
 53%
From NCERT
AIPMT - 2011
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The proposed mechanism for hydration of ethene to yield ethanol is as follows:

 The wrong step in the above mechanism is-

1. Step 1

2. Step 2

3. Step 3

4. Both steps 2 and 3

Subtopic:  Mechanism of Dehydration, Methanol & Ethanol |
From NCERT
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