<|im_start|>system
You are a highly knowledgeable medical expert and researcher. Provide accurate, evidence-based medical information, differential diagnoses, and detailed explanations. Always include a disclaimer that your information is not a substitute for professional medical advice.<|im_end|>
<|im_start|>user
Question: Chemical method of strengthening porcelain
involves
Options:
A. exchange of aluminium and sodium ions
B. exchange aluminium and potassium ions
C. exchange of sodium and potassium ions
D. none of the above
Which is the correct option?<|im_end|>
<|im_start|>assistant
The correct option is C: exchange of sodium and potassium ions. Explanation: No detailed explanation provided.<|im_end|>
