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Questions and Answers
Why is mercury used in measuring atmospheric pressure?
Why is mercury used in measuring atmospheric pressure?
- It is easily available and cost-effective for making barometers
- It has low density and doesn't evaporate, making it ideal for barometers
- It has high density and doesn't stick to glass, making it suitable for barometers (correct)
- It is a non-toxic and environmentally friendly option for barometers
What property of mercury makes it suitable for measuring atmospheric pressure?
What property of mercury makes it suitable for measuring atmospheric pressure?
- It has low density, making it rise in the barometer tube with changes in atmospheric pressure
- It is a non-reactive metal, ensuring accurate pressure readings
- It is a good conductor of electricity, allowing accurate pressure measurements
- It has a high boiling point, ensuring it remains in liquid form at room temperature (correct)
Why is mercury preferred over water in barometers for atmospheric pressure measurement?
Why is mercury preferred over water in barometers for atmospheric pressure measurement?
- Mercury's high density allows for a wider range of pressure measurement compared to water
- Mercury is less affected by temperature changes compared to water (correct)
- Water's low density causes inaccuracies in pressure measurement
- Water evaporates quickly, making it unsuitable for long-term pressure measurement
