Statement A: Celsius scale is the best scale for measuring temperature...
Understanding the Statements
Statement A: "Celsius scale is the best scale for measuring temperature."
Statement B: "CO2 (liquid state) is stored under high pressure."
Analysis of Statement A
- The Celsius scale is widely used for everyday temperature measurement, particularly in most countries.
- However, it may not be the best scale for all scientific applications.
- For example, the Kelvin scale is preferred in scientific contexts as it starts from absolute zero, providing a more accurate representation of thermal energy.
Analysis of Statement B
- Carbon dioxide (CO2) in its liquid state must be stored under high pressure.
- This is necessary because CO2 only becomes liquid at pressures above 5.1 atmospheres at room temperature.
- Hence, storing liquid CO2 requires specialized high-pressure containers to maintain its liquid form.
Conclusion
- Statement A is subjective and not universally true; thus, it is not entirely accurate to claim it is the best scale.
- Statement B is a factual statement regarding the storage of liquid CO2 under high pressure.
Final Answer
- Therefore, the correct answer is option 'C': Statement B is true, while Statement A is not necessarily the best.
Statement A: Celsius scale is the best scale for measuring temperature...
Statement A ("Celsius scale is the best scale for measuring temperature") is subjective and incorrect in a scientific context, as the Kelvin scale is the SI unit for temperature and preferred for scientific measurements. Statement B ("CO₂ (liquid state) is stored under high pressure") is true, as liquid CO₂ requires high pressure to remain stable.
Thus, only statement B is true.