Recent questions and answers in Mass Transfer

Which of the following statements is/are applicable to Fick's second law:Concentration changes with timeSteady state condition prevailsDiffusion is time dependentConcentr...

A wet solid, fed to a dryer at a rate of $5 \mathrm{~kg} / \mathrm{s}$, is dried using hot air. In this process its moisture content is reduced from $25 \%$ to $15 \%$. T...

At $873 \: \mathrm{K}$ , hydrogen diffuses under steady state condition through a $5\: \mathrm{mm}$ thick palladium sheet with a cross-sectional area of $0.3 \mathrm{~m}^...

A fruit juice is concentrated using an ultrafiltration membrane. A feed stream at $10 \mathrm{~kg} / \mathrm{min}$ with $6 \%$ total solids (by weight) is increased to $2...

In hot weather, a human body cools by the evaporation of sweat from its skin. The amount of water that must evaporate to cool the body by $1^{\circ} \mathrm{C}$ is $\_\_\...

A $2$ mm thick palladium sheet of $1000 \mathrm{~mm}^{2}$ cross section is used as a diffusional membrane to purify hydrogen. The hydrogen concentration is maintained at ...

$100$ moles of moist air at $70 \%$ relative humidity is cooled from $70^{\circ} \mathrm{C}$ to $50^{\circ} \mathrm{C}$ at a constant pressure of $1$ bar . The vapour pre...

A tubular bowl centrifuge is used to separate an aqueous phase from an oil phase. The radii of outlets of the light and heavy liquids are set at $4.5$ cm and $4.6$ cm, re...

\begin{tabular}{l|l}Q.149 & Identify the correct pair(s) of governing law with respective process operation. \\\hline& Stoke's law - Mass transfer \\\hline& Kirchhoff's l...

It is known that component A diffuses into a solid to a depth of $10 \mu \mathrm{m}$ in 1 hour at $300 \mathrm{~K}$. Treat diffusion in one dimension. The time taken for ...