Which of the following components cannot be retained by gas-liquid columns but can be separated by using gas-solid chromatography?
A. Formaldehyde
B. Hydrogen sulphide
C. Benzene
D. Carbon dioxide
Answer:B
Which of the following components cannot be retained by gas-liquid columns but can be separated by using gas-solid chromatography?
A. Formaldehyde B. Hydrogen sulphide C. Benzene D. Carbon dioxide
Explanation: Hydrogen sulphide cannot be retained by gas-liquid columns. It can be separated using gas-solid chromatography.