Which of the following cannot be a gas chromatography detector?

مندرجہ ذیل میں سے کون گیس کرومیٹوگرافی کا پتہ لگانے والا نہیں ہوسکتا؟

FID

TCD

DAD

None of these

DAD (Diode Array Detector) is used in liquid chromatography (HPLC), not gas chromatography.

FID (Flame Ionization Detector), TCD (Thermal Conductivity Detector), and MS (Mass Spectrometry) are all common GC detectors.