Organic chemistry quiz 12:Chemical properties of alcohols. To : Detection of phenol

#1. (7) It is not preferred to prepare aldehydes by oxidation of primary alcohols.

a)Because the reaction does not stop at formation of aldehydes but continue to form the corresponding organic acid

b)because the reaction does not stop at formation of aldehydes but continue to form the corresponding mineral acid

c)Because the reaction does not stop at formation of acid but continue to form the corresponding aldehydes

d)there is no correct answer

#2. (8) The reaction products of ethanol with sulphuric acid depend on the temperature.

a)Because: at 180 c the water molecule is removed from 2 molecules of alcohols forming ether while at 140 c:water molecule is removed from one molecule of alcohol forming the corresponding alkene

b)Because: at 140 c the water molecule is removed from one molecules of alcohols forming ether while at 180:water molecule is removed from one molecule of alcohol forming the corresponding alkene

c)Because: at 140 c the water molecule is removed from 2 molecules of alcohols forming ether while at 180:water molecule is removed from one molecule of alcohol forming the corresponding alkene

d)Because: at 140 c the water molecule is removed from 2 molecules of alcohols forming ether while at 180:water molecule is removed from 2 molecule of alcohol forming the corresponding alkene

#3. (9) Ethanol is used in thermometers, which measure the lower temperature.

a)due to the low melting point of ethanol [-110]

b)due to the low freezing point of ethanol [-210]

c)due to the high freezing point of ethanol [110]

d)Due to the low freezing point of ethanol [-110]

Organic chemistry quiz 12:Chemical properties of alcohols. To : Detection of phenol

Results

#1. (7) It is not preferred to prepare aldehydes by oxidation of primary alcohols.

#2. (8) The reaction products of ethanol with sulphuric acid depend on the temperature.

#3. (9) Ethanol is used in thermometers, which measure the lower temperature.