silica gel
A: 硅胶
B: %
C: @
A: 硅胶
B: %
C: @
举一反三
- Which of the following silica gel as adsorbent in TLC, contains neither inorganic adhesive material(gypsum ustum) nor fluorescence indicator? A: Silica gel H B: Silica gel G C: Silica gel GF254 D: None of above
- You must insert …….bags inside cartons. A: carbon B: gel C: silica gel
- Measure the rate of how the silica gel the moisture. A: absorb (v.) B: absorption (n.)
- Silica gel is belongs to ___ adsorbent. A: non-polar B: polar C: semi-chemical D: alkaline E: chemical
- In TLC identification, the activation condition of silica gel thin<br/>layer plate is ____. A: 110℃<br/>bake for 30min B: 210℃<br/>bake for 30min C: 310℃<br/>bake for 30min D: 410℃<br/>bake for 30min