This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
One of the following is true about the physical state of thiopentone 
Select and explain. 
A. Colorless, B. Pale yellow color, C. Green color, D. Acidic solution
B: Pale yellow color
Answer: B: Pale yellow color 
Explanation: Thiopentone is available as yellow amorphous powder.