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GATE Chemical 2012 | Question: 9
For an exothermic reversible reaction, which one of the following correctly describes the dependence of the equilibrium constant $(K)$ with temperature $(T)$ and pressure...
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GATE Chemical 2012 | Question: 26
The one-dimensional unsteady state heat conduction equation in a hollow cylinder with a constant heat source $q$ is$$ \frac{\partial T}{\partial t}=\frac{1}{r}\frac{\part...
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GATE Chemical 2012 | Question: 40
The characteristic equation for a system is $S^{3}+9S^{2}+26S+12(2+K{_c}) = 0$.Using the Routh test, the value of $K{_...
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GATE Chemical 2012 | Question: 4
A box containing $10$ identical components has $6$ red balls and $2$ blue balls. If each compartment can hold only one ball, then the number of different possible arrange...
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GATE Chemical 2012 | Question: 31
Consider a binary liquid mixture at constant temperature $T$ and pressure $P$. If the enthalpy change of mixing, $\Delta H = 5x_1x_2$, where $x_1$ and $x_2$ are the mole ...
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GATE Chemical 2012 | Question: 53
The force per unit area (in the $x$ -direction) that must be exerted on the bottom plate to maintain the flow is$\mu V/b$-$\mu V/b$$2\mu V/b$$-2\mu V/b$
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GATE Chemical 2012 | Question: 55
The plug flow reactor is replaced by 3 mixed flow reactors in series, each of 2.0 liters volume. The exact conversion of A (in %) is35.952.573.794.8
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GATE Chemical 2013 | Question: 19
The packing of an existing absorption tower is replaced with a new type of packing. The height of the packing and the inlet conditions are maintained the same as before. ...
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GATE Chemical 2012 | Question: 54
The first order liquid phase reaction $A \rightarrow P$ is conducted isothermally in a plug flow reactor of $5$ liter volume. The inlet volumetric flow rate is $1$ liter/...
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GATE Chemical 2012 | Question: 17
In the McCabe-Thiele diagram, if the $x$-coordinate of the point of intersection of the $q$-line and the vapor-liquid equilibrium curve is greater then the $x$-coordinate...
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GATE Chemical 2012 | Question: 50
The reaction A${_l}{_i}{_q}$ +B${_g}{_a}{_s}$ $\rightarrow$C${_l}{_i}{_q}$ +D${_g}{_a}{_s}$, is carried out in a rector followed by a separator as shown below ...
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GATE Chemical 2012 | Question: 35
In a counter-flow double pipe heat exchanger, oil ($\dot m = 2 \text{ kg/s}, C_p= 2.1 \text{ kJ/kg}.\:^{\circ} C$) is cooled from $90^{\circ}C$ to $40^{\circ} C$ by water...
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GATE Chemical 2012 | Question: 6
In a throttling process, the pressure of an ideal gas reduce by $50\%$. If $C{_p}$ and $C{_v}$ are the heat capacities at constant pressure and constant volume, respectiv...
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GATE Chemical 2012 | Question: 24
A thermometer initially at $100^{ \circ}C$ is dipped at $t = 0$ into an oil bath, maintained at $150^{\circ}C$. If the recorded temperature is $130^{\circ}C$ after $1$ mi...
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GATE Chemical 2012 | Question: 41
The elementary reversible exothermic gas-phase reaction A + 3B $\rightleftharpoons$ 2Cis to be conducted in a non-i...
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GATE Chemical 2012 | Question: 43
A batch reactor 1x10$^{5}$ kg of a product per year. The total batch time (in hours) of the reactor is k$\sqrt{P}{_B}$, where ${P}{_B}$is the product per batch in kg and ...
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GATE Chemical 2012 | Question: 47
Match the polymer in Group I to the polymer characteristic in Group II Group I ...
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GATE Chemical 2012 | Question: 44
Heat integration is planned in a process plant at an investment Rs. 2x10$^{6}$. This would result in a net energy savings of 20 GJ per year. If the nominal rate of intere...
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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 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: 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 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: 15
A solid sphere with an initial temperature $T{_1}$ is immersed in a large thermal reservoir of temperature $T{_0}$. The sphere reaches a steady temperature after a certai...
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GATE Chemical 2012 | Question: 36
The rate-controlling step for the solid-catalyzed irreversible reaction $ A + B \longrightarrow C$is known ...
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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 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: 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: 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 2012 | Question: 13
In a mixing tank operating at very high Reynolds number($>10^{4}$), if the diameter of the impeller is doubled (other conditions remaining constant), the power required i...
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GATE Chemical 2012 | Question: 23
The main unit processes used for the production of hydrogen from natural gas are stream reforming $(\text{SR})$, pressure swing adsorption $(\text{PSA})$, low temperature...
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GATE Chemical 2012 | Question: 25
The Bode stability criterion is applicable whenGain and phase curves decrease continuously with frequencyGain curve increase and phase curve decreases with frequencyGain ...
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GATE Chemical 2012 | Question: 38
An equimolar mixture of $A$ and $B$ (A being more volatile) is flash distilled continuously at a feed rate of $100 \text{ kmol/h}$, such that the liquid product contains ...
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GATE Chemical 2012 | Question: 18
For which of the following combinations, does the absorption operation become gas -film controlled?$P$. The solubility of gas in the liquid is very high$Q$. The solubilit...
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GATE Chemical 2012 | Question: 12
For uniform laminar flow(in the $x$-direction) past a flat plate at high Reynolds number, the local boundary layer thickness ($\delta$) varies with the distance along the...
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GATE Chemical 2012 | Question: 10
Water is flowing under laminar conditions in a pipe of length $L$. If the diameter of the pipe is doubled, for a constant volumetric flow rate, the pressure drop across t...
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GATE Chemical 2012 | Question: 11
The local velocity of a fluid along a streamline can be measured byPitot tubeVenturi meterRotameterOrifice meter
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GATE Chemical 2018 | Question: 16
Choose the correct statementIn viscose rayon manufacturing process,carbon disulphide used as reactant for xanthate formation is regenerated in a later stepcaustic soda us...
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GATE Chemical 2018 | Question: 53
The humidity of air at a dry-bulb temperature of $65^{\circ}\:C$ is $0.025$ $kg$ water/$kg$ dry air. The latent heat of vaporization of water at $0^{\circ}\:C$ is $2500$ ...
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GATE Chemical 2018 | Question: 27
In the year $2005$, the cost of a shell and tube heat exchanger with $68\:m^{2}$ heat transfer area was $Rs.\:12.6$ Lakh. Chemical Engineering Index for cost in $2005$ wa...
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GATE Chemical 2018 | Question: 49
The volume of liquid filled in a spherical storage tank of radius $R$ is computed from height of liquid, $h$, in the outside tube (neglecting the volume of liquid in the ...
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