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245 questions found · practise this subject as a set Show 20 · 50 per page
#QuestionSubject and topicDifficulty
161 What is formed when phenol is treated with bromine water? Chemistry
Properties of phenols		 Easy
162 Which product is obtained in the Reimer–Tiemann reaction of phenol? Chemistry
Properties of phenols		 Easy
163 Why is phenol more acidic than ethanol? Chemistry
Properties of phenols		 Medium
164 Which compound is the most acidic? Chemistry
Properties of phenols		 Medium
165 Why can o-nitrophenol be separated from p-nitrophenol by steam distillation? Chemistry
Properties of phenols		 Hard
166 What is the reaction of an alkyl halide with a sodium alkoxide to form an ether called? Chemistry
Ethers		 Easy
167 What are the products when anisole is heated with HI? Chemistry
Ethers		 Easy
168 Why do ethers have much lower boiling points than isomeric alcohols? Chemistry
Ethers		 Medium
169 Which pair of reactants is best for preparing tert-butyl methyl ether by Williamson synthesis? Chemistry
Ethers		 Medium
170 What are the main products when methyl tert-butyl ether, (CH₃)₃C–O–CH₃, is treated with HI? Chemistry
Ethers		 Hard
171 Why is methanol called "wood spirit"? Chemistry
Commercially important alcohols		 Easy
172 Which enzyme in yeast converts glucose into ethanol and carbon dioxide? Chemistry
Commercially important alcohols		 Easy
173 What substances are added to make denatured alcohol? Chemistry
Commercially important alcohols		 Medium
174 Why is air excluded during the fermentation of sugar to ethanol? Chemistry
Commercially important alcohols		 Medium
175 Methanol is manufactured industrially by which reaction? Chemistry
Commercially important alcohols		 Hard
176 What is the hybridisation of the carbonyl carbon atom in propanone? Chemistry
The carbonyl group		 Easy
177 What is the IUPAC name of CH₃CH₂COCH₃? Chemistry
The carbonyl group		 Easy
178 Why do nucleophiles attack the carbon atom of a carbonyl group? Chemistry
The carbonyl group		 Medium
179 What is the IUPAC name of CH₃CH(CH₃)CH₂CHO? Chemistry
The carbonyl group		 Medium
180 Which compound is named β-chlorobutyraldehyde in the common system? Chemistry
The carbonyl group		 Hard