Question

Identify the correct statements from the following

Choose the correct answer from the options given below

• A. C and D only
• B. B and C only
• C. A and B only
• D. A, B and C only

Hint:

Remember the definitions of metamers, functional isomers, position isomers, and homologous series. Identify the relationships between the given pairs of compounds based on their structures and functional groups.

Answer 1

The Correct Option is C

In option C are momologues to each - other and option D are only organic molecule not isomers.

Answer 2

To solve the question, we need to analyze the given statements about isomerism and identify which ones are correct. Let's examine each statement one by one:

1. Statement A: The molecules shown are metamers. 
   Metamers are a type of structural isomer where compounds have the same molecular formula but differ in the distribution of alkyl groups around a functional group. The structures in option A differ in the distribution of their alkyl groups around the ketone functional group. Therefore, statement A is correct.
2. Statement B: The compounds are functional isomers. 
   Functional isomers have the same molecular formula but differ in their functional groups. Here, one compound has a cyano group (-CN) while the other has an isocyanate group (NC-), which fits the definition. Thus, statement B is correct.
3. Statement C: The molecules are position isomers. 
   Position isomers have the same molecular formula and functional group but differ in the position of the functional group on the carbon skeleton. Both molecules in option C have hydroxyl groups (-OH), but they are positioned differently. Hence, statement C is correct.
4. Statement D: The compounds are homologues. 
   Homologues belong to a series of compounds differing by a CH₂ unit. The compounds shown have different functional groups (NH₂ and NH) and do not belong to a homologous series. Thus, statement D is incorrect.

Based on the analysis above, statements A and B are the correct identifications of isomers. Hence, the correct answer is: A and B only.