MPSC Rajyaseva 2017 GS Paper 1 — Question 67
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स्थिरांकाचे (a) चे एकक ______ व्हॅन डर वाल्स. A unit of Van der Waals constant (a) is
1)kPa
2)kPa dm³
3)kPa dm³ mol⁻¹
4)kPa dm⁶ mol⁻²✓ Correct
Van der Waals constant 'a' corrects for intermolecular forces of attraction in real gases. Its SI/derived unit is pressure times volume squared per mole squared, which is kPa dm⁶ mol⁻².