Given below are two statements:
Statement-I : The hot water flows faster than cold water.
Statement-II : Soap water has higher surface tension as compared to fresh water.
In the light above statements, choose the correct answer from the options given below
Statement-I : The hot water flows faster than cold water.
Statement-II : Soap water has higher surface tension as compared to fresh water.
In the light above statements, choose the correct answer from the options given below
- (A)Statement-I is false but Statement II is true
- (B)Statement-I is true but Statement II is false✓ Correct
- (C)Both Statement-I and Statement-II are true
- (D)Both Statement-I and Statement-II are false
Answer: (B)
Solution
Hot water has lower viscosity than cold water, and lower viscosity means less resistance to flow, so hot water indeed flows faster than cold water through a given pipe or opening — Statement I is true.
Soap is a surfactant: adding it to water lowers the surface tension rather than raising it, so soap water has *lower* surface tension than fresh water — Statement II is false.
Statement I is true but Statement II is false.
Soap is a surfactant: adding it to water lowers the surface tension rather than raising it, so soap water has *lower* surface tension than fresh water — Statement II is false.
Statement I is true but Statement II is false.
JEE Main · 2025 · 23 Jan 2025 · Shift 1 · Single correct option