Which one of the following statements about the BrahMos missile and related organisations is not correct?

Introduction / Context:
BrahMos is one of the most important supersonic cruise missiles in the Indian arsenal and is frequently discussed in defence and current affairs sections of competitive examinations. It has been developed through Indo Russian collaboration and has been integrated on multiple platforms. This question asks which statement about BrahMos and related organisations is not correct, so you must know which institutions are actually responsible for developing the missile and which companies manufacture the aircraft on which it is mounted.

Given Data / Assumptions:

• BrahMos is described as a supersonic cruise missile developed by India and Russia together.
• The name is said to be derived from the Brahmaputra and Moskva rivers.
• Indian scientists are reported to have integrated BrahMos on the Sukhoi-30 MKI fighter aircraft.
• One option claims that the Defence Research and Development Organisation manufactures the Sukhoi-30 MKI fighter.
• Only one of these statements needs to be identified as incorrect.

Concept / Approach:
The main concepts involved are basic facts about BrahMos and knowledge of which organisations design or manufacture specific defence platforms. BrahMos is a joint venture between India and Russia, and the name does indeed come from the Brahmaputra and Moskva rivers. The missile has been successfully integrated with the Sukhoi-30 MKI fighter aircraft used by the Indian Air Force. However, the Sukhoi-30 MKI is originally designed by the Russian Sukhoi Design Bureau and licence produced in India by Hindustan Aeronautics Limited. Defence Research and Development Organisation is a research and development agency, not the aircraft manufacturer. Recognising this mismatch allows you to identify the incorrect statement.

Step-by-Step Solution:
Step 1: Check Option A. BrahMos is widely known as a supersonic cruise missile developed through an Indo Russian partnership, so this statement is correct. Step 2: Check Option B. The name BrahMos is indeed derived from the names of two rivers, Brahmaputra in India and Moskva in Russia. Therefore, this statement is also correct. Step 3: Check Option C. BrahMos has been integrated on several platforms, including ships and Sukhoi-30 MKI fighter aircraft, and Indian scientists have played a key role in this. Hence, this statement is correct. Step 4: Check Option D. It states that Defence Research and Development Organisation manufactures the Sukhoi-30 MKI fighter. In reality, the aircraft is designed by the Sukhoi Design Bureau and licence produced in India by Hindustan Aeronautics Limited, while Defence Research and Development Organisation focuses on research and development of defence technologies. Therefore, Option D is incorrect. Step 5: Conclude that the incorrect statement is the one that attributes manufacture of the Sukhoi-30 MKI to Defence Research and Development Organisation.

Verification / Alternative check:
You can verify this by recalling that all major Indian military aircraft such as Tejas, Jaguar and the licence built versions of Su-30 MKI, MiG-21 and others are produced by Hindustan Aeronautics Limited. Defence Research and Development Organisation works closely with Hindustan Aeronautics Limited and other organisations but is not the production agency for fighter aircraft. In contrast, BrahMos Aerospace is a joint venture company and represents cooperation between India and Russia, confirming that statements regarding the missile's joint origin and name are reliable. This cross check confirms that only Option D contains a factual error.

Why Other Options Are Wrong:

• Option A: Correctly describes BrahMos as a supersonic cruise missile created through Indo Russian collaboration.
• Option B: Accurately explains the origin of the name BrahMos from the Brahmaputra and Moskva rivers.
• Option C: Correctly notes that the missile has been integrated with the Sukhoi-30 MKI fighter.

Common Pitfalls:
A typical mistake is to assume that Defence Research and Development Organisation directly manufactures all indigenous defence equipment simply because it is associated with many projects. Another pitfall is to overlook the distinction between design and manufacturing roles among different defence organisations. Some candidates may also confuse BrahMos Aerospace, the joint venture company, with Hindustan Aeronautics Limited or Defence Research and Development Organisation. Keeping track of each organisation's specific role helps you avoid such confusion.

Final Answer:
The statement that is not correct is that Defence Research and Development Organisation is the manufacturer of the Sukhoi-30 MKI fighter aircraft.