Statement A: Celsius scale is the best scale for measuring temperature...
Kelvin scale is used as standard unit of temperature. CO2 is heavier gas than N2 and O2.
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Statement A: Celsius scale is the best scale for measuring temperature...
The correct answer is option 'C' - Statement B.
Explanation:
Statement A: Celsius scale is the best scale for measuring temperature.
- This statement is not entirely accurate. The choice of temperature scale depends on the specific application and context. The Celsius scale is commonly used for everyday temperature measurements, especially in scientific and meteorological settings. However, there are other temperature scales like Kelvin and Fahrenheit that are also widely used in different contexts. Each scale has its advantages and disadvantages, and the choice of scale depends on factors like convenience, historical usage, and scientific requirements. Therefore, it is incorrect to claim that the Celsius scale is the best scale for measuring temperature without considering the specific application.
Statement B: CO2 is a heavier gas than both N2 and O2.
- This statement is true. The molecular weight of carbon dioxide (CO2) is approximately 44 grams per mole, while the molecular weights of nitrogen (N2) and oxygen (O2) are approximately 28 grams per mole and 32 grams per mole, respectively. Since the molecular weight of CO2 is higher than both N2 and O2, CO2 is indeed a heavier gas compared to N2 and O2. This property can be observed in various phenomena, such as the sinking of carbon dioxide gas in air or its concentration at lower levels in the atmosphere due to its higher density.
In summary, statement B is true, while statement A is not entirely accurate.
Statement A: Celsius scale is the best scale for measuring temperature...
The Kelvin scale is used for measuring temperature of various substances, it best for measuring temperatures and is the standard unit of temperature.
Celcius scale and Fahrenheit scale are good only to measure temperatures of surroundings.
CO2 is heavier than N2 and O2 as it has compound molecules and is used in fire extinguishers.
Thus correct answer is C.
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