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GATE 2018
Easy
According to the surface renewal theory, the unit of fractional rate of surface renewal is
- Am² s⁻²
- Bm² s⁻¹
- Cm s⁻¹
- s⁻¹
Explanation
The fractional rate of surface renewal (s in Danckwerts' theory) has units of inverse time, s⁻¹.
Source: GATE CH 2018 (2018)
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