Question

The lower standard point of a celsius thermometer, corresponds to:

• A. Freezing point of pure water.
• B. Melting point of pure ice.
• C. both (A) and (B).
• D. None of these

Answer 1

The correct option is C

both (A) and (B).

1. The freezing point of water is 0 $°C$.
2. The melting point of ice is 0$°C$.
3. The lower standard point of a celsius thermometer is 0$°C$, which corresponds to the freezing point of pure water and melting point of ice.

Hence, option (C) is the correct option.