The commonly used dehydrating agent in the preparation of an ester is :

1. P2O5                                   

2. Anhydride CaCl2

3. Anhydride AlCl3                     

4.Conc. H2SO4

Subtopic:  Alcohols: Preparation & Properties |
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Oxidation of allylic alcohol, (CH2=CH-CH2OH) gives a mixture of oxalic acid and formic acid. If this oxidation is done in presence of bromine. One would expect only:

1. Oxalic acid

2. Formic acid

3. Succinic acid

4. Acrylic acid

Subtopic:  Alcohols: Preparation & Properties |
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Consider the following reaction, 

Ethanol PBr3XAlc.KOHY(ii)H2O, heat(i) H2SO4, room temperatureZ

product Z is:

1. CH2=CH2

2. CH3CH2OCH2CH3

3. CH3CH2OSO3H

4. CH3CH2OH

Subtopic:  Alcohols: Preparation & Properties |
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AIPMT - 2009
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Which of the following are known as mercaptans?

1. Thio-alcohols                         

2. Thio-ethers

3. Thio-aldehydes                     

4. Thio-acids

Subtopic:  Ethers: Preparation & Properties, Uses |
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Glycol condenses with ketones to give:

1. Cyclic acetals                   
2. Cyclic ketals
3. Acetaldehyde                   
4. oxalic acid

Subtopic:  Alcohols: Preparation & Properties |
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Salol is used as:

1. antiseptic                               

2. antipyretic

3. both 1. and 2.                     

4. none of these

Subtopic:  Ethers: Preparation & Properties, Uses |
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Z in the reaction below is:
\(CH_3CH_2CH_2OH \xrightarrow[160\ - \ 180 ^\circ C]{Conc.\ H_2SO_4}\ X\ \xrightarrow{Br_2}\ Y\)
\( Y\ \xrightarrow[2.\ NaNH_2]{1.\ Alc.\ KOH}\ Z\)

1.  2.
3. 4.  \(CH_3-C\equiv CH\)
Subtopic:  Alcohols: Preparation & Properties |
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Ethyl propanoate on reduction with LiAlH4 yields:

1. Methanol

2. Ethanol and Propanol

3. Propane

4. Mixture of ethanol and methanol

Subtopic:  Ethers: Preparation & Properties, Uses |
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The most acidic alcohol among the following is -

1. Methanol                               

2. Ethanol

3. Isopropyl alcohol                     

4. t-Butyl alcohol

Subtopic:  Alcohols: Preparation & Properties |
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Consider the following reaction,

PhenolZn-dustXAnhy.AlCl3CH3ClYAlk.KMnO4Z                                     

The product Z is

1. toluene

2. benzaldehyde

3. benzoic acid

4. benzene

Subtopic:  Phenols: Preparation & Properties |
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