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GATE Chemical 2017 | Question: 55
Match the equipment in Group-$1$ with the process in Group-$2$$\begin{array}{cc}\&\text{Group-$1$} & \text{Group-$2$} \\ &\text{P. Fluidized bed} & \text{ I. Paper-making...
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GATE Chemical 2016 | Question: 5
The partial molar enthalpy (in $kJ$/mol) of species $1$ in a binary mixture is given by $\bar{h}_{1}=2 -60x_{2}^{2}+100x^{1}x_{2}^{2},$ where $x_{1}$ and $x_{2}$ are the ...
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GATE Chemical 2016 | Question: 25
Match the industrial processes in $Group–I$ with the catalyst materials in $Group–2$.$\begin{array}{cc}\\ \\&\text{Group-1} & \text{Group-2} \\ &\text{P. Ethylene po...
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GATE Chemical 2015 | Question: 41
An ideal gas is initially at a pressure of $0.1\:MPa$ and a total volume of $2\:m^{3}$. It is first compressed to $1\:MPa$ by a reversible adiabatic process and then cool...
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GATE Chemical 2013 | Question: 49
A fraction $f$ of the feed is bypassed and mixed with the permeate to obtain treated water having a fluoride concentration of 1 mg/L. Here also the flow rate of the rejec...
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GATE Chemical 2013 | Question: 15
Taking the acceleration due to gravity to be 10 m/s$^{2}$, the separation factor of a cyclone 0.5 m in diameter and having a tangential velocity of 20m/s near the wall is...
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GATE Chemical 2013 | Question: 6
The thermodynamic state of a closed system containing a pure fluid changes from $(T1,p1)$ to $(T2, p2)$, where $T$ and $p$ denote the temperature and pressure, respective...
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GATE Chemical 2012 | Question: 51
If the ratio of recycle gas to purge gas $(F{_R}{_G}/F{_P}{_G})$ is $4$ then $Y{_R}{_B}$ is $3/8$$2/5$$1/2$$3/4$
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GATE Chemical 2012 | Question: 16
If the Nusselt number $(\text{Nu})$ for heat transfer in a pipe varies with Reynolds number $(Re)$ as $\text{Nu}$ $ {\displaystyle \propto }\; Re^{0.8}$, then for constan...
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GATE Chemical 2018 | Question: 9
In connection with petroleum refining, identify the incorrect statement among the following options.Desalting of crude oil is done before processing it in atmospheric dis...
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GATE Chemical 2024 | Question: 28
​​​​​Hot oil at $110{ }^{\circ} \mathrm{C}$ heats water from $30^{\circ} \mathrm{C}$ to $70{ }^{\circ} \mathrm{C}$ in a counter-current double-pipe heat exchang...
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GATE CH 2022 | Question: 47
The dry-bulb temperature of air in a room is $30^{\circ}C$ ... = ____________ (rounded off to one decimal place).
The dry-bulb temperature of air in a room is $30^{\circ}C$. The Antoine equation for wateris given as $$\text{ln} P^{sat} = 12.00 -\frac{4000}{T - 40}$$ where $T$ is the ...
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GATE CH 2021 | Question: 38
The combustion of carbon monoxide is carried out in a closed, rigid and insulated vessel. $1 \text{ mol}$ ... is ___________ bar (round off to $1$ decimal place).
The combustion of carbon monoxide is carried out in a closed, rigid and insulated vessel. $1 \text{ mol}$ of $CO$, $0.5 \text{ mol}$ of $O_2$ and $2 \text{ mol}$ of $N_2$...
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GATE CH 2021 | Question: 46
A distillation column handling a binary mixture of $A$ and $B$ is operating at total reflux. It has two ideal stages ... $2$ decimal places).
A distillation column handling a binary mixture of $A$ and $B$ is operating at total reflux. It has two ideal stages including the reboiler. The mole fraction of the more...
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GATE Chemical 2020 | Question: 53
Consider the following closed loop system.$G_c, G_f$ , and $G_p$ are the transfer functions of the controller, the final control element and the process, respectively. $Y...
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GATE Chemical 2019 | Question: 50
Two spherical camphor particles of radii $20$ $cm$ and $5$ $cm$ far away from each other, are undergiong sublimation in a stream of air. The mass transfer coefficient is ...
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GATE Chemical 2019 | Question: 55
A taxi-car is bought for $Rs\: 10$ lakhs. Its salvage value is zero. The expected yearly income after paying all expenses and applicable taxes is $Rs$ $3$ lakhs. The comp...
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GATE Chemical 2017 | Question: 23
The $DCDA$ (Double Contact Double Absorption) process is used for the manufacture of ureasulphuric acidnitric acidammonia
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GATE Chemical 2017 | Question: 24
Match the polymerization precesses in Group-$1$ with the polymers in Group-$2$.$\begin{array}{cc}\&\text{Group-1} & \text{Group-2} \\ &\text{P. Free radical polymerizatio...
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GATE Chemical 2017 | Question: 40
A fluid flows over a heated horizontal plate maintain at temperature $T_{W}$. The bulk temperature of the fluid is $T_{\infty }$ . The temperature profile in the thermal...
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GATE Chemical 2017 | Question: 46
The $C$-curve measured during a pulse tracer experiment is shown below. In the figure, $C(t)$ is the concentration of the tracer measured at the reactor exit in mol/liter...
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GATE Chemical 2017 | Question: 51
The open loop transfer function of a process with a proportional controller (gain $K_{C}$) is$$G_{OL}=K_{C}\frac{e^{-2s}}{s}$$Based on the Bode criterion for closed-loop ...
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GATE Chemical 2016 | Question: 18
What is the order of response exhibited by a $U$-tube manometer? Zero orderFirst orderSecond orderThird order
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GATE Chemical 2016 | Question: 24
Two paper pulp plants $P$ and $Q$ use the same quality of bamboo as a raw material. The chemicals used in their digester are as follows:$$\begin{array}{clcIcI|cI|cI|c}\hl...
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GATE Chemical 2016 | Question: 40
In a $1-1$ pass shell and tube exchanger, steam is condensing in the shell at a temperature $(T_{s})$ of $135^{\circ}C$ and the cold fluid is heated from a temperature $(...
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GATE Chemical 2016 | Question: 51
A liquid flows through an “equal percentage” valve at a rate of $2\:m^{3}/h$ when the valve is $10\%$ open. When the valve opens to $20\%$ the flowrate increases to $...
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GATE Chemical 2015 | Question: 53
A binary feed consisting of $25$ mol$\%$ liquid and $75$ mol$\%$ vapour is separated in a staged distillation column. The mole fraction of the more volatile component in ...
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GATE Chemical 2014 | Question: 16
A spherical storage vessel is quarter-filled with toluene. The diameter of the vent at the top of the vessel is $1/20^{th}$ of the diameter of the vessel. Under the stead...
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GATE Chemical 2013 | Question: 14
In the Tyler standard screen scale series, when the mesh number increase from 3 mesh to 10 mesh, thenthe clear opening decreasesthe clear opening increasethe clear openin...
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GATE Chemical 2012 | Question: 22
The final boiling points of gasonline, diesel, atmospheric gas oil $\text{(AGO)}$ and lubricating oils vary as gasonline>diesel>$\text{AGO}$ lubricating oilslubricating o...
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GATE Chemical 2012 | Question: 21
In petroleum refining, catalytic reforming is used to convertparaffins and naphthenes to armaticsParaffins to hydrogen and carbon monoxideGas oil to diesel and gasonlineL...
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GATE CH 2021 | Question: 39
A gaseous mixture at $1$ bar and $300 \: K$ consists of $20 \text{ mol } \% \: CO_2$ ... and pressure is ________ $\text{kJ}$ (round off to nearest integer)
A gaseous mixture at $1$ bar and $300 \: K$ consists of $20 \text{ mol } \% \: CO_2$ and $80 \text{ mol } \%$ inert gas.Assume the gases to be ideal. Take $R=8.314 \text{...
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GATE CH 2021 | Question: 42
Seawater is passed through a column containing a bed of resin beads. Density of seawater $=1025 \: \text{ kg m}^{-3}$ ... (round off to nearest integer).
Seawater is passed through a column containing a bed of resin beads.Density of seawater $=1025 \: \text{ kg m}^{-3}$Density of resin beads $=1330 \text{ kg m}^{-3}$Diame...
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GATE Chemical 2020 | Question: 51
A catalytic gas phase reaction $P \rightarrow Q$ is conducted in an isothermal packed bed reactor operated at steady state. The reaction is irreversible and second order ...
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GATE Chemical 2017 | Question: 54
The total cost $(C_{T})$ of an equipment in terms of the operating variables $x$ and $y$ is$$C_{T}=2x+\frac{12000}{xy}+y+5$$The optimal value of $C_{T}$, rounded to $1$ d...
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GATE Chemical 2016 | Question: 12
Match the dimensionless numbers in $Group–I$ with the ratios in $Group–2$.$\begin{array}{cc}\\&\text{Group-1} & \text{Group-2} \\ &\text{P. Biot number} & \text{ I. ...
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GATE Chemical 2016 | Question: 15
The variations of the concentration $\left ( C_{A} ,C_{R}\:and\:C_{S}\right )$ for three species $\left ( A,R\:and\:S \right )$ with time, in an isothermal homogeneous ba...
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GATE Chemical 2016 | Question: 36
An agitated cylinder vessel is fitted with baffles and flat blade impellers. The power number for this system is given by $N_{p}=\frac{P}{\rho n^{3}D^{5}}$ where $P$ is t...
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GATE Chemical 2016 | Question: 55
A catalytic reforming plant produces hydrogen and benzene from cyclohexane by de-hydro aromatisation. In order to increase the production of hydrogen, the owner plans to ...
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GATE Chemical 2015 | Question: 43
A binary mixture of components $(1)$ and $(2)$ forms an azeotrope at $130^{\circ}C$ and $X_{1}=0.3$. The liquid phase non-ideality is described by In $\gamma _{1}=Ax{_{2}...
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