The artificial sweetener used only for cold food is

The correct answer is Option (3) → Aspartame

Aspartame is about 100 times as sweet as cane sugar, but it is unstable at cooking temperature. Its use is therefore limited to cold foods and soft drinks.

Note: This question is from the pre-rationalised NCERT book (2022-23). The topic is not there in the latest NCERT book (2026-27), and it is also out of the CUET 2026 syllabus.

NCERT (Pre-rationalised edition, 2022-23):
Artificial Sweetening Agents – …