Question

The GNSS service developed indigenously by the ISRO is

• A. EGNOS
• B. MSAS
• C. IRNSS
• D. CWAAS

Hint:

A GNSS (Global Navigation Satellite System) provides positioning and timing. Different countries and regions have built their own systems. The question asks which one was developed indigenously by ISRO of India.

Answer 1

The Correct Option is C

Step 1: Understand a GNSS.
A GNSS is a satellite system that tells you your position and the exact time. Many regions have built their own.

Step 2: Identify the foreign systems.
EGNOS is European and MSAS is Japanese. These are augmentation systems, not India's own.

Step 3: Rule out the odd name.
CWAAS is not a recognised Indian navigation system.

Step 4: Find the Indian system.
India's space agency ISRO built its own regional navigation system called IRNSS (also known as NavIC).

Step 5: Recall its role.
IRNSS gives accurate position and timing over India and the surrounding area, independent of foreign systems.

Step 6: Conclusion.
The GNSS developed indigenously by ISRO is IRNSS.
\[ \boxed{\text{IRNSS}} \]