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GATE Chemical 2015 | Question: 57
A catalyst slab of half-thickness $L$ (the width and length of the slab $>>\:L$) is used to conduct thefirst order reaction $A{\rightarrow} B$. At $450\: K$, the Thiele m...
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GATE Chemical 2014 | Question: 50
In a steady and incompressible flow of a fluid (density = $1.25\: kg\: m^{-3}$), the difference between stagnation and static pressures at the same location in the flow i...
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GATE Chemical 2014 | Question: 48
In a steady incompressible flow, the velocity distribution is given by $\bar{V}=3x\hat{i}-Py\hat{j}+5z\hat{k}$, where, $V$ is in $m/s$ and $x,y$ and $z$ are in $m$. In or...
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GATE Chemical 2014 | Question: 24
Catalytic cracking isa hydrogen addition processa carbon rejection processan exothermic processa coking process
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GATE Chemical 2014 | Question: 19
Assuming the mass transfer coefficient in the gas and the liquid phases are comparable, the absorption of $CO_{2}$ from reformers gas $(CO_{2}+H_{2})$ into an aqueous sol...
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GATE Chemical 2013 | Question: 43
Identify which of the following statements are FALSE.(P) Oils with an oleic radical (1 double bond) are more suitable than oils with a linolenic radical (3 double bonds) ...
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GATE Chemical 2013 | Question: 41
A first order liquid phase reaction is carried out isothermally at a steady state in a CSTR and 90% conversion is attained. With the same inlet conditions and for the sam...
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GATE Chemical 2013 | Question: 38
A crosscurrent cascade of N ideal stages is used to treat a feed stream of molar flow rate E. The feed stream contains a solute which is to be recovered by a pure solvent...
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GATE Chemical 2013 | Question: 34
100 ton/h of a rock feed, of which 80% passed through a mesh size of 2.54 mm, were reduced in size such that 80% of the crushed product passed through a mesh size of 1.27...
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GATE Chemical 2013 | Question: 24
In the manufacture of sulphuric acid by the contact process, the catalytic oxidation of SO$_2$ is carried out in multiple stages mainly toincrease the reaction rate by pr...
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GATE Chemical 2013 | Question: 10
The apparent viscosity of a fluid is given by0.007 |$\frac{dv}{dy}$|$^{0.3}$ where ($\frac{dv}{dy}$) is the velocity gradient. The fluid isBingham plasticdilatantpseudopl...
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GATE Chemical 2012 | Question: 8
In a parallel flow heat exchanger operating under steady state, hot liquid enters at a temperature $T_{h,in}$ and leaves at a temperature $T_{h,out}$. Cold liquid enters ...
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GATE Chemical 2018 | Question: 8
Segmental baffles in a $2-4$ shell and tube heat exchangerchange the flow pattern of the tube side fluid and increase the overall heat transfer co-efficientincrease the h...
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GATE Chemical 2024 | Question: 1
The first non-zero term in the Taylor series expansion of $(1-x)-e^{-x}$ about $x=0$ is$1$$-1$$\frac{x^{2}}{2}$$-\frac{x^{2}}{2}$
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GATE Chemical 2024 | Question: 33
​​​Alumina particles with an initial moisture content of $5 \mathrm{~kg}$ per $\mathrm{kg}$ dry solid are dried in a batch dryer. For the first two hours, the measu...
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GATE CH 2023 | Question: 59
A unimolecular, irreversible liquid-phase reaction $\boldsymbol{A} \longrightarrow \boldsymbol{P}$ was carried out in an ideal batch ...
A unimolecular, irreversible liquid-phase reaction$$\boldsymbol{A} \longrightarrow \boldsymbol{P}$$was carried out in an ideal batch reactor at temperature $T$. The rate ...
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GATE CH 2022 | Question: 34
The directional derivative of $f\left ( x, y, z \right ) = 4x^{2}+2y^{2}+z^{2}$ ... is _________________ (rounded off to two decimal places).
The directional derivative of $f\left ( x, y, z \right ) = 4x^{2}+2y^{2}+z^{2}$ at the point $(1, 1, 1)$ in the direction of the vector $\vec{v} = \hat{i} - \hat{k}$ is _...
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GATE Chemical 2017 | Question: 53
A bond has a maturity value of $20,000$ Rupees at the end of $4$ years. The interest is compounded at the rate of $5\%$ per year.The initial investment to be made, rounde...
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GATE Chemical 2016 | Question: 7
In a cyclone separator used for separation of solid particles from a dust laden gas, the separation factor is defined as the ratio of the centrifugal force to the gravita...
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GATE Chemical 2016 | Question: 13
For what value of Lewis number, the wet-bulb temperature and adiabatic saturation temperature are nearly equal?$0.33$$0.5$$1$$2$
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GATE Chemical 2015 | Question: 44
For Fanning friction factor $f$ (for flow in pipes) and drag coefficient $C_{D}$ (for flow over immersed bodies), which of the following statements are true?$P.$ $f$ acco...
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GATE Chemical 2015 | Question: 63
The cost of two independent process variables $f_{1}$ and $f_{2}$ affects the total cost $C_{T}$ (in lakhs of rupees) of the process as per the following function :$$C_{T...
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GATE Chemical 2014 | Question: 42
Carbon monoxide $(CO)$ is burnt in pressure of $200\%$ excess pure oxygen and the flame temperature achieved is $2298\:K$. The inlet streams are at $25^{\circ}$. The stan...
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GATE Chemical 2014 | Question: 41
Two elemental gases ($A$ and $B$) are reacting to form a liquid ($C$) in a steady state process as per the reaction $A+B{\rightarrow}C$. The single-pass conversion of the...
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GATE Chemical 2014 | Question: 7
Match the following $$\begin{array}&&\textbf{Group I} & \textbf{Group II} \\ &\text{P. $\left [ \frac{\partial G}{\partial n_{i}} \right ]_{T,P,n_{\int =i}}$} & \text{I....
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GATE Chemical 2013 | Question: 53
The vapor liquid equilibrium relation for an ideal binary system is given by y*${_A}$ = $\frac{\alpha{_A}{_B}x{_A}}{...
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GATE Chemical 2013 | Question: 36
In a double pipe counter-current heat exchanger, the temperature profiles shown in the figure were observed. During operation, due to fouling inside the pipe, the heat tr...
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GATE Chemical 2013 | Question: 18
A hole of area 1 cm$^{2}$ is opened on the surface of a large spherical cavity whose inside temperature is maintained at 727 $^{o}$C. The value of stefan-Boltzmann consta...
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GATE Chemical 2013 | Question: 16
The effectiveness of a heat exchanger in the $\varepsilon$-NTU method is defined as$\frac{increase\ in temperature\ of\ the\ cold\ fluid}{decrease\ in\ temperature\ of\ t...
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GATE Chemical 2012 | Question: 20
Consider the reaction scheme shown below $$A \xrightarrow {k_1} B \xrightarrow {k_2}C$$Both the reactions are first-order. The activation energie...
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GATE Chemical 2012 | Question: 19
The half-life of an $n^{th}$ order reaction in a batch reactor depends ononly the rate constantonly the rate constant and the order of the reactiononly the rate constant ...
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GATE Chemical 2012 | Question: 7
If the temperature of saturated water is increased infinitesimally at constant entropy, the resulting state of water will beLiquidLiquid – vapor coexistenceSaturated va...
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GATE Chemical 2018 | Question: 11
The molecular formula of the predominant chemical compound in commercial sugar is$C_{12}H_{22}O_{11}$$C_{12}H_{24}O_{12}$$C_{6}H_{10}O_{5}$$C_{6}H_{12}O_{6}$
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GATE CH 2023 | Question: 43
$\mathrm{CO}$ and $\mathrm{H}_2$ ...
$\mathrm{CO}$ and $\mathrm{H}_2$ participate in a catalytic reaction. The partial pressures (in atm) of the reacting species $\mathrm{CO}$ and $\mathrm{H}_2$ in the feed ...
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GATE Chemical 2020 | Question: 5
In a constant-pressure cake filtration with an incompressible cake layer, volume of the filtrate $(V)$ is measured as a function of time $t$. The plot of $t/V$ versus $V$...
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GATE Chemical 2020 | Question: 8
Hot-wire anemometer is used for the measurement ofcompositionflowpressuretemperature
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GATE Chemical 2017 | Question: 43
The Sherwood number $(Sh_{L})$ correlation for laminar flow over a flat plate of length $L$ is given by$$Sh_{L}=0.664\:Re_{L}^{-0.5}\:Sc^{1/3}$$where $Re_{L}$ and $Sc$ re...
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GATE Chemical 2016 | Question: 21
Standard pipes of different schedule numbers and standard tubes of different $BWG$ numbers are available in the market. For a pipe/tube of a given nominal diameter, which...
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GATE Chemical 2015 | Question: 19
If $v,\:u,\:s$ and $g$ represent respectively the molar volume, molar internal energy, molar entropy and molar Gibbs free energy, then match the entries in the left and r...
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GATE Chemical 2015 | Question: 21
For uniform laminar flow over a flat plate, the thickness of the boundary layer, $\delta$ at a distance $x$ from the leading edge of the plate follows the reaction :$\del...
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