Topic Question Set
Q 1
:
Which one of the following compounds will readily react with dilute NaOH? [2024]
(1)
Acidic strength order is:
Phenols > > water > alcohols
Acid-base reactions proceed from stronger to weaker side.
Q 2
:
A toxic compound “A” when reacted with NaCN in aqueous acidic medium yields an edible cooking component and food preservative ‘B’. ‘B’ is converted to ‘C’ by diborane and can be used as an additive to petrol to reduce emission. “C” upon reaction with oleum at 140°C yields an inhalable anesthetic “D”. Identify “A”, “B”, “C” and “D”, respectively. [2025]
Methanol; formaldehyde; methyl chloride; chloroform
Ethanol; acetonitrile; ethylamine; ethylene
Methanol; acetic acid; ethanol; diethyl ether
Acetaldehyde; 2-hydroxypropanoic acid; propanoic acid; dipropyl ether
(3)
Q 3
:
Given below are two statements: [2025]
Statement I: Dimethyl ether is completely soluble in water. However, diethyl ether is soluble in water to a very small extent.
Statement II: Sodium metal can be used to dry diethyl ether and not ethyl alcohol.
In the light of given statements, choose the correct answer from the options given below:
Statement I is false but Statement II is true.
Both Statement I and Statement II are false.
Statement I is true but Statement II is false.
Both Statement I and Statement II are true.
(4)
Statement I: Due to hydrogen bonding with water dimethyl ether is completely soluble in water. However due to increased hydrophobic part in diethyl ether, its solubility in water is less than that of dimethyl ether.
Statement II: Ethyl alcohol reacts with Na metal to evolve hydrogen.
Q 4
:
The reactions which cannot be applied to prepare an alkene by elimination, are [2025]
Choose the correct answer from the options given below:
B and E only
B, C and D only
A, C and D only
B and D only
(4)
