Question

Full form of NISAR satellite is

• A. National Indian Satellite for Agricultural Research
• B. NASA ISRO Satellite for Agricultural Research
• C. NASA ISRO Synthetic Aperture Radar
• D. NASA ISRO Synchronised Agricultural Radar

Hint:

NISAR is a joint NASA-ISRO radar mission; expand each letter carefully.

Answer 1

The Correct Option is C

NISAR is a real, upcoming satellite mission, so this question is really just checking if you know its correct expansion.

1. National Indian Satellite for Agricultural Research: This is not the actual name; NISAR is not a purely agriculture focused mission and this expansion does not match the real acronym letters.
2. NASA ISRO Satellite for Agricultural Research: This gets the two space agencies right but wrongly narrows the mission to agriculture, which is not what the acronym stands for.
3. NASA ISRO Synthetic Aperture Radar: This is the correct expansion. NISAR is a joint mission of NASA and ISRO built around synthetic aperture radar (SAR) imaging, used to track changes in land, ice and vegetation across the globe.
4. NASA ISRO Synchronised Agricultural Radar: This mixes real agency names with an invented mission purpose and does not match the actual name.

Matching each letter of NISAR to its word gives NASA ISRO Synthetic Aperture Radar, so option (3) is correct.

Let's summarize:

• NISAR is a joint NASA and ISRO Earth observation mission.
• Its name expands to NASA ISRO Synthetic Aperture Radar, based on SAR imaging technology.

So the correct full form of NISAR is NASA ISRO Synthetic Aperture Radar.