The boiling point elevation constant \( K_b \) is also known as:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Ebullioscopic Constant
The elevation of the boiling point of a dilute solution is proportional to its molality:
\( \displaystyle \Delta T_b=K_b\,m \)
Kb is the elevation of boiling point for a 1 molal solution, in K kg mol−1.
NCERT (2026-27 edition):
Elevation of Boiling Point – …
Note: The same/similar question has been asked in different years by NTA as per the details given below:
| 2026 | 2025 | 2024 | 2023 | 2022 |
|---|---|---|---|---|
| – | 15-05 S2 | 29-05 S1 | – | – |