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MPSC State Service 2017 · GS · Question 67 of 100

A unit of Van der Waals constant (a) is

Chemistry

  1. AkPa
  2. BkPa dm3
  3. CkPa dm3 mol-1
  4. DkPa dm6 mol-2Correct

Answer: D. kPa dm6 mol-2

Explanation

The van der Waals constant 'a' has units of pressure × volume² / mol², i.e. kPa·dm⁶·mol⁻².

Source: MPSC Rajyaseva Prelims 2017 GS Paper I (official paper)

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