Recent questions without answers

"He often $\_\_\_\_$ the numbers. False claims are not going to help. Honesty $\_\_\_\_$ trust", said the manager.Choose the option with the correct order of words to fil...

In the sequence of tiles shown below, the missing tile indicated by the question mark should be

A school has $100$ students distributed among $1^{\text {st }}$ to $10^{\text {th }}$ standards.Based on this, which one of the following statements is always correct?The...

Charity: $\text{P}$ :: Retaliation: $\text{Q}$Choose the appropriate pair of words $\text{P}$ and $\text{Q}$ that fit the analogy.$\text{P} =$ Parsimonious; $\text{Q} =$ ...

A paper shown in Panel $\text{I}$ is folded along the dashed lines $( -)$ to construct a cube. The shaded regions shown in Panel $\text{I}$ appear on the outer surface of...

Four hills $\text{H1, H2, H3}$, and $\text{H4}$ are present in an area. The following observations are made about them:Neither $\text{H2}$ nor $\text{H3}$ is the easternm...

In the P&ID shown below, which one of the following is the function of PAH in the process?to maintain a constant pressure in the vessel by throttling the pump outletto al...

According to the phase rule, which one of the following is the number of degrees of freedom for pure water at its triple point?$-3$$0$$1$$3$

An irreversible chemical reaction occurs on a porous catalyst. All the pores are of same size. In strong pore diffusion regime, the observed activation energy is $120 \ma...

In a traditional continuous Kraft (Sulfate) pulping process, consider the following major steps:Bleaching $\text{(BL)}$, Chipping $\text{(CH)}$, Debarking $\text{(DE)}$, ...

For an irreversible reaction containing inerts in the feed, single-pass conversion in a reactor is $70 \%$. Which one of the following statements is CORRECT?Recycle elimi...

A binary mixture of butane and butadiene is to be separated in an extractive distillation using furfural. Furfural lowers the activity of butadiene more than it does for ...

A two-dimensional temperature profile is given as $T=2 x^{2}+3 x y+y^{2}$. If $\hat{\boldsymbol{\imath}}$ and $\hat{\boldsymbol{\jmath}}$ are the unit vectors along $x$ a...

Which one of the following is produced by catalytic reforming of straight run gasoline and naphtha?diesel oilfurnace oilhigh octane gasolinekerosene

A process exhibits an inverse response to a step input. Which of the following statements is/are necessarily TRUE about the process?Its transfer function has a positive z...

Urea has its major use as a solid fertilizer for nitrogen fixation. Which of the following is/are other application(s) of urea?manufacturing of resins and plasticsmelamin...

Which of the following statements regarding the heat of reaction is/are CORRECT?For endothermic reaction, it is positive.For exothermic reaction, it is negative.For exoth...

In which of the following condition(s), Bernoulli's equation is applicable?incompressible flowinviscid flowunsteady flowflow along a streamline

Which of the following methods for calculating profitability does/do NOT consider the time value of money?rate of return on investmentdiscounted cash flow rate of returnp...

Consider two successive screen sizes in the Tyler standard screen scale, viz. $150$ meshes per inch and $200$ meshes per inch. Their linear sizes of the openings are $\ma...

Consider a homogeneous gas phase reaction, $\mathrm{A}+2 \mathrm{~B} \rightarrow 2 \mathrm{C}+3 \mathrm{D}$, occurring at constant temperature and pressure in a varying v...

Water is discharged from vertical side of a tank through a circular orifice of diameter $2$ cm under laminar flow conditions. The water surface in the tank is maintained ...

Consider a non-reactive binary mixture of two ideal gases $\text{A}$ and $\text{B}$ in an isothermal horizontal closed tube. Due to the concentration difference at the tw...

An experiment is performed by rolling an unbiased die once. Events A and B are defined as follows:Event A: The outcome of the rolled die is a prime number.Event B: The ou...

Using single step trapezoidal rule, the value of\[\int_{0}^{0.5}\left(1+16 x-20 x^{2}\right) d x\]is $\_\_\_\_$ (rounded off to two decimal places).

$K$ value is defined as the ratio of mole fraction of a component in the vapor phase to that in the liquid phase. The $K$ values of propane and iso-butane at $293$ $K$ ar...

Consider a flow with the following velocity field\[\overrightarrow{\boldsymbol{V}}=(x+y) \hat{\boldsymbol{\imath}}+(y+z) \hat{\boldsymbol{\jmath}}+(z+x) \widehat{\boldsym...

 Vapor pressure of water at various temperature is given in the table.\[\begin{array}{|l|c|c|c|c|c|}\hline\text{Temperature (in K)} & 284 & 289 & 294 & 299 & 310 \\\hline...

A volatile organic compound $\text{(VOC)}$ is to be adsorbed from air onto a bed of activated carbon. The equilibrium capacity of activated carbon at the feed conditions ...

Consider the following homogeneous isothermal liquid-phase parallel reactions carried out in three reactor configurations (having identical volumes and same operating tem...

A control valve with hyperbolic characteristics has a turndown ratio (ratio of maximum flow to minimum controllable flow) of $50$. The flow rate through the valve at $70 ...

The gross energy requirement, to reduce a very large feed of coal to such a size that $80 \%$ of the product passes through a $100 ~\mu \mathrm{m}$ screen, is $13 \text{k...

In a certain project, $15 \%$ of the total investment is the working capital. The minimum acceptable rate of return is $4.95 \%$ and the period of evaluation is $15$ year...

A continuous distillation column is used to separate an equimolar mixture of diethylamine (DEA) and methanol. The feed enters the column as saturated liquid at a flow rat...

A gas stream with $2.01 \mathrm{~mol} \%$ ammonia is to be scrubbed in a counter-current isothermal packed bed absorber using pure water to reduce its concentration to $0...

Laboratory filtration is conducted at constant pressure drop of $200 \text{ kPa}$ on a slurry of $\mathrm{CaCO}_{3}$ in water at room temperature. The time taken to colle...

Consider three identical non-interacting first order processes in series, each having unit gain and a time constant of $2$ min. Tuning of proportional controller using cl...

A thermometer initially at a steady temperature of $30^{\circ} \mathrm{C}$ is inserted in a water bath maintained at $90^{\circ} \mathrm{C}$. The initial rate of temperat...

In a double pipe cocurrent heat exchanger, operating at steady state, oil (specific heat capacity $=2100 \mathrm{~J} \mathrm{~kg}^{-1}{ }^{\circ} \mathrm{C}^{-1}$ ) enter...

A pipe with outer diameter of $0.02 \text{ m},$ carries hot water. The temperature at the outer surface of the pipe is $70^{\circ} \mathrm{C}$. This pipe is covered with ...