Recent questions

Consider the following continuously differentiable function $$\textbf{v}(x,y,z)=3x^2y \textbf{ i} + 8y^2z \textbf{ j} + 5xyz \textbf{ k}$$ where $\textbf{i, j,}$ and $\te...

Consider the following unit step function.The Laplace transform of this function is$\dfrac{e^{-3s}}{s} \\ $$\dfrac{e^{-3s}}{s^2} \\$$\dfrac{e^{-3s}}{3s} \\$$\dfrac{e^{-6s...

In a constant-pressure cake filtration with an incompressible cake layer, volume of the filtrate $(V)$ is measured as a function of time $t$. The plot of $t/V$ versus $V$...

In a laboratory experiment, a unit pulse input of tracer is given to an ideal plug flow reactor operating at steady state with a recycle ratio, $R=1$. The exit age distri...

The square of Thiele modulus, $M_{T}$, is given by $M_{T}^2 = \dfrac{L^2k}{D_{eff}}$, where $L$ is the characteristic length of the catalyst pellet, $k$ is the rate const...

Hot-wire anemometer is used for the measurement ofcompositionflowpressuretemperature

Pure gas $\textbf{P}$ is being absorbed into a liquid. The dissolved $\textbf{P}$ undergoes an irreversible reaction in the liquid film. The reaction is first order with ...

Consider a batch distillation process for an equimolar mixture of benzene and toluene at atmospheric pressure. The mole fraction of benzene in the distillate collected af...

Which one of the following is $\textbf{NOT CORRECT}$?nylon$-6,6$ is produced by condensation polymerizationphenol-formaldehyde resin is a thermosetting polymerhigh densit...

The operating temperature range for the Haber process is $350-500^{\circ}C$. It is used for the production of ammonia at$20 \:MPa$ using $Fe$ catalyst in an exothermic re...

Consider the refinery processes in $\textbf{Group-I}$ and the catalysts in $\textbf{Group-2}$.$\begin{array}{llll} & \textbf{Group-I} && \textbf{Group-2} \\ \textbf{P} & ...

Consider the processes in $\textbf{Group – 1}$ and the reactions in $\textbf{Group – 2}$.$\begin{array}{llll} & \textbf{Group – 1} & & \textbf{Group – 2} \\ \textbf{P} & ...

Annual capacity of a plant producing phenol is $100$ metric tons. Phenol sells at INR $200$ per kg, and its production cost is INR $50$ per kg. The sum of annual fixed ch...

A rigid spherical particle undergoes free settling in a liquid of density $750 \: kg \: m^{-3}$ and viscosity $9.81 \times 10^{-3} \: Pa \: s$. Density of the particle is...

Consider an incompressible flow of a constant property fluid over a smooth, thin and wide flat plate. The free stream flows parallel to the surface of the plate along its...

Ratio of momentum diffusivity to thermal diffusivity isReynolds numberPrandtl numberNusselt numberPeclet number

Mole fraction and activity coefficient of component $1$ in a binary liquid mixture are $x_1$ and $\gamma _1$ respectively. $G^E$ is excess molar Gibbs energy of the mixtu...

Leidenfrost phenomenon refers tothe condensation of vapour on a cold surfacethe exchange of heat between two solidsthe melting of frostfilm boiling and evaporation of liq...

The expenditure on the project _____ as follows: equipment Rs.$20$ lakhs, salaries Rs.$12$ lakhs, and contingency Rs.$3$ lakhs.break downbreakbreaks downbreaks

The search engine’s business model ____ around the fulcrum of trust.revolvesplayssinksbursts

Two cars at the same time from the same location and go in the same direction. The speed of the first car is $50$ km/h and the speed of the second car is $60$ km/h. The n...

Ten friends planned to share equally the cost of buying a gift for their teacher. When two of them decided not to contribute, each of the other friends had to pay Rs. $15...

A court is to a judge as _________ is to a teachera studenta punishmenta syllabusa school

The police arrested four criminals – $P, Q, R$ and $S.$ The criminals knew each other. They made the following statements:$P$ says “Q committed the crime.”$Q$ says “S com...

In the given diagram, teachers are represented in the triangle, researchers in the circle and administrators in the rectangle. Out of the total number of the people, the ...

“A recent High Court judgement has sought to dispel the idea of begging as a disease – which leads to its stigmatization and criminalization – and to regard it as a symp...

In a college, there are three student clubs, $60$ students are only in the Drama club, $80$ students are only in the Dance club, $30$ students are only in Maths club, $40...

The value of the expression $\underset{x\rightarrow \frac{\pi }{2}}{\lim}\: \mid \frac{\tan\:x}{x} \mid $ is $\infty$$0$$1$$-1$

Consider a rigid, perfectly insulated, container partitioned into two unequal parts by a thin membrane (see figure). One part contains one mole of an ideal gas at pressur...

For a single component system, vapor (subscript $g$) and liquid (subscript $f$) coexist in mechanical, thermal and phase equilibrium when$u_{g}=u_{f}$ (equality of specif...

For a binary nonideal $A-B$ mixture exhibiting a minimum boiling azeotrope, the activity coefficients, $\gamma_{i} \left ( i=A, B \right )$, must satisfy$\gamma _{A} 1,\g...

For a fully-developed turbulent hydrodynamic boundary layer for flow past a flat plate, the thickness of the boundary layer increases with distance $x$ from the leading e...

Consider a cylinder (diameter $D$ and length $D$), a sphere (diameter $D$) and a cube (side length $D$). Which of the following statements concerning the sphericity $\lef...

Prandtl number signifies the ratio of$\frac{Momentum \: Diffusivity}{Thermal \: Diffusivity}$$\frac{Mass \: Diffusivity}{Thermal \: Diffusivity}$$\frac{Thermal \: Diffusi...

Pool boiling equipment operating above ambient temperature is usually designed to operatefar above the critical heat fluxnear the critical heat fluxfar above the Leidenfr...

The desired liquid-phase reaction$D+E\overset{k_{1}}{\rightarrow}F \:\:\:\:\:\:\:\:\:r_{F}=k_{1}\:C_{D}^{2}\:C_{E}^{0.3}$is accompanied by an undesired side reaction$D+E\...

For a first order reaction in a porous spherical catalyst pellet, diffiusional effects are most likely to lower the observed rate of reaction for slow reaction in a pell...

A thermocouple senses temperature based on theNernst Effect Maxwell Effect Seebeck EffectPeltier Effect