Question

After he had finished his work, he returned home
is this compound, complex, compound-complex

Answer 1

Explanation:

In the compound both ketone and the carboxylic group is present. Priority is given to carboxylic group at C-1, and the ketonic group at C-3 is treated as a substituent. Thus the prefix used is "keto" and the suffix used is "oic acid".

Thus IUPAC name is 3-ketobutanoic acid

Answer 2

$\huge{\mathcal{\purple{A}\green{N}\pink{S}\blue{W}\purple{E}\green{R}\pink{!}}}$

Compound sentence joins two or more independent clauses with a coordinator such as for, an, or, but or a semi-colon. The given sentence is an example of a compound sentence which can be broken into two simple sentences.

Options A is incorrect as 'but' coordinator is used to join two independent clauses. The ask is to break the compound sentence in simple sentences. Options C and D are not simple sentences as they are starting from 'after' and 'since'. Thus, option B is the correct answer according to the rules.