Which one of the following pairs (Aluminium Plant – State) is not correctly matched?

1. A

   Alupuram (Alwaye) – Kerala

   Option (a) pairs Alupuram (Alwaye) with Kerala, which is a correctly matched location for an aluminium plant in India. Therefore, this option is not the correct choice for the question.

2. B

   Belagavi – Karnataka

   Option (b) pairs Belagavi with Karnataka, representing another correctly matched aluminium plant situated in the state. Hence, this option is also eliminated.

3. C

   Muri – Chhattisgarh

   Option (c) pairs Muri with Chhattisgarh, which is incorrectly matched because Muri is actually located in Jharkhand (formerly part of Bihar), not Chhattisgarh. Because this pair fails the matching test asking which is not correctly matched, it serves as the official key.

4. D

   Hirakud – Odisha

   Option (d) pairs Hirakud with Odisha, forming a correct geographical match for aluminium production facilities in the region. Thus, this option is incorrect.

Summary. Official key is (c) Muri – Chhattisgarh. The question asks to identify the incorrectly matched pair of aluminium plants and their respective states. Alupuram in Kerala, Belagavi in Karnataka, and Hirakud in Odisha are all correctly matched pairs of major aluminium smelting or refining units. In contrast, Muri is situated in the state of Jharkhand, making the pairing with Chhattisgarh wrong. Aspirants must carefully study the geographical locations of key mineral-based industries like aluminium and copper plants across India.