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  9. Q97

OPSC OCS 2022 · Question 97 of 98

Meniscus rise in glass thermometer is due to the change in

General Science

  1. ADensityCorrect
  2. BMass
  3. CHeat capacity
  4. DThermal conductivity

Answer: A. Density

Explanation

When the temperature increases, the liquid (usually mercury or alcohol) in the thermometer expands, causing its density to decrease. This decrease in density leads to the meniscus rising in the capillary tube. Hence option A is correct. mometer%20works,in%20movement%20up%20the%20thermometer.

Source: OPSC OCS (2022) Preliminary GS Paper-I; answers per Apti Plus Academy compilation (to be verified against official OPSC key)

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