Top 80+ Solved Alcohol MCQ Questions Answer
Q. Methanol and ethanol are distinguished by the…….
a. Action of HCl
b. Iodoform test
c. Solubility in water
d. Sodium
Q. Ethyl alcohol exhibits acidic character on reacting with…….
a. Acetic acid
b. Sodium metal
c. Hydrogen iodide
d. Acidic potassium dichromate
Q. Which of the following is not characteristic of alcohols……
a. They are lighter than water
b. Their boiling points rise fairly uniformly with increasing molecular weight
c. Lower members are insoluble in water and organic solvents but solubility regularly increases with molecular weight
d. Lower members have pleasant smell and burning taste, while higher members are odourless and tasteless
Q. By means of calcium chloride which of following can be dried……
a. Methanol
b. Ethanol
c. Both (a) and (b)
d. None of these
Q. Dimethyl ether and ethyl alcohol are …..
a. Branched isomer
b. Position isomer
c. Functional isomer
d. Tautomer
Q. The process of manufacture of absolute alcohol from rectified spirit is…….
a. Fractional distillation
b. Steam distillation
c. Azeotropic distillation
d. Vacuum distillation
Q. When ethyl alcohol reacts with acetic acid, the products formed are…..
a. Sodium ethoxide + hydrogen
b. Ethyl acetate + water
c. Ethyl acetate + soap
d. Ethyl alcohol + water
Q. Methanol and ethanol are miscible in water due to…..
a. Covalent character
b. Hydrogen bonding character
c. Oxygen bonding character
d. None of these
Q. Which of the following is most soluble in water……
a. Normal butyl alcohol
b. Isobutyl alcohol
c. Tertiary butyl alcohol
d. Secondary butyl alcohol
Q. If ethanol dissolves in water, then which of the following would be done……
a. Absorption of heat and contraction in volume
b. Emission of heat and contraction in volume
c. Absorption of heat and increase in volume
d. Emission of heat and increase in volume
Q. When rectified spirit and benzene are distilled together, the first fraction obtained is……
a. A ternary azeotrope
b. Absolute alcohol
c. A binary azeotrope
d. Denatured spirit
Q. Alcohols combine with acetylene in the presence of mercury compounds as catalyst to form…….
a. Acetals
b. Xanthates
c. Vinyl ethers
d. None of the above
Q. The boiling point of methanol is greater than that of methyl thiol because
a. There is intramolecular hydrogen bonding in methanol and intermolecular hydrogen bonding in methyl thiol
b. There is intermolecular hydrogen bonding in methanol and no hydrogen bonding in methyl thiol
c. There is no hydrogen bonding in methanol and intermolecular hydrogen bonding in methyl thiol
d. There is intramolecular hydrogen bonding in methanol and no hydrogen bonding in methyl thiol
Q. At 530 K , glycerol reacts with oxalic acid to produce …….
a. Allyl alcohol
b. Formic acid
c. Glyceraldehyde
d. Glycerol monooxalate
Q. With anhydrous zinc chloride, ethylene glycol gives…….
a. Formaldehyde
b. Acetylene
c. Acetaldehyde
d. Acetone