MHT CET202519 Apr 2025Evening ShiftChemistryStates of MatterActual
Which from following is true according to Gay-Lussac's law?
Options
- AV T = constant at constant pressure and for fixed mass of gas.
- Bp d = constant at constant temperature and fixed mass of gas.
- CP T = constant at constant volume and fixed mass of gas.
- DP V = constant at constant temperature and for fixed mass of gas.
Correct answer
C. P T = constant at constant volume and fixed mass of gas.
Step-by-step solution
Gay-Lussac's Law states that, for a fixed mass of gas at constant volume, the pressure is directly proportional to the absolute temperature: P T . This gives the mathematical relation P T = constant at constant volume and fixed mass. Option C states: P T = constant at constant volume and fixed mass of gas, which matches the law exactly. Option A describes Charles's Law, option B is a derived relation from ideal gas behavior, and option D is Boyle's Law. Thus, the correct statement is option C .