Description : In a CSTR __________ varies with time. (A) Reaction rate (B) Concentration (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (D) Neither (A) nor (B)
Description : For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption. (A) Physical (B) Chemical (C) Both (A) and (B) (D) Neither (A) nor (B)
Last Answer : (B) Chemical
Description : Corrosion involves exchange of electrons in __________ corrosion. (A) Chemical (B) Electrochemical (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : Design of heterogamous catalytic reactor involves consideration of __________ steps. (A) Only chemical (B) Only physical (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : With increase in temperature, the equilibrium __________ rises in case of endothermic reaction. (A) Constant (B) Conversion (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (B) Conversion
Description : Equilibrium of a chemical reaction as viewed by kinetics is a __________ state. (A) Dynamic steady (B) Static steady (C) Dynamic unsteady (D) None of these
Last Answer : (A) Dynamic steady
Description : A catalyst in a chemical reaction __________ free energy change in the reaction. (A) Increases (B) Decreases (C) Either (A) or (B); depends on the type of catalyst (D) Neither (A) nor (B)
Last Answer : (C) Either (A) or (B); depends on the type of catalyst
Description : The cake resistance increases steadily with the time of filtration in a plate and frame filter employing constant __________ filtration. (A) Rate (B) Pressure (C) Both (A) & (B) (D) Neither (A) nor (B
Description : The rate of shear versus the shear stress curves are time dependent for __________ fluid. (A) Thixotropic (B) Rheopectic (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : The effect of friction on the flow of steam through a nozzle is to decrease the __________ of steam. (A) Wetness (B) Mass flow rate (C) Both 'a' & 'b' (D) Neither 'a' nor 'b'
Last Answer : (C) Both 'a' & 'b'
Description : Predicting the feasibility of reaction and does not indicate the rate of chemical reaction
Last Answer : What does the expression –dc/dt indicates ?
Description : Kinetics is the study of: (1) The rate of chemical reaction (2) How fast the reactions go (3) The mechanisms and paths of the molecules take in joining from one reactant to products (4) All of these are correct
Last Answer : (4) All of these are correct Explanation: In chemistry, the study of rates and mechanisms of chemical processes and, of the factors on which they depend, is called kinetics. is the study of ... provides a very detailed picture of which bonds are broken and formed during the course of a reaction.
Last Answer : All of these are correct
Description : For multi-component multiple phases to be in equilibrium at the same pressure and temperature, the __________ of each component must be same in all phases. (A) Chemical potential (B) Fugacity (C) Both (A) and (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) and (B)
Description : For __________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same. (A) Unsaturated surface (B) Constant rate (C) Both (A) and (B) (D) Neither (A) nor (B)
Description : If ΔG (free energy change) for a chemical reaction is very large and negative, then the reaction is (A) Not feasible (B) Just feasible (C) Very much feasible (D) Unpredictable as ΔG is no measure of feasibility of a reaction
Last Answer : (C) Very much feasible
Description : Reaction of calcium carbide with water produces a gas, which is used (A) As an illuminant (B) For metal cutting/welding (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : Pick out the wrong statement. (A) 'Hold back' is defined as the fraction of material that stays longer than the mean residence time (B) Study of non-ideal flow reactor is done experimentally ... final stages of reaction (D) A batch reactor cannot be used to study the kinetics of catalytic reaction
Last Answer : (D) A batch reactor cannot be used to study the kinetics of catalytic reaction
Description : In nuclear reactions, __________ number is conserved. (A) Mass (B) Atomic (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : Width and speed of a conveyor belt depends upon the __________ of the material. (A) Lump size (B) Bulk density (C) Both (A) & (B) (D) Neither (A) nor (B
Description : Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill. (A) Cage (B) Hammer (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : Use of baffles in agitators help in minimising the __________ tendency. (A) Swirling (B) Vortexing (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : The important dimensional group involved in the power requirement calculation in mixing operation is the __________ number. (A) Reynold's (B) Froude (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : Separation of isotopes is generally done using a/an __________ centrifuge. (A) Ultra (B) Disk-bowl (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (A) Ultra
Description : The damage/deterioration of metals by the __________ action of fluids is called 'erosion'. (A) Abrasive (B) Corrosive (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (A) Abrasive
Description : Dry bulb temperature of unsaturated air is more than its __________ temperature. (A) Dew point (B) Wet bulb (C) Both 'a' & 'b' (D) Neither 'a' nor 'b
Last Answer : (C) Both 'a' & 'b
Description : Diffusion in concentrated solutions differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution. (A) Degree of ideality (B) Viscosity (C) Both 'a '& 'b' (D) Neither 'a' nor 'b'
Last Answer : (C) Both 'a '& 'b
Description : In the desorption of highly soluble gas from the liquid, the main resistance will be in the __________ phase. (A) Gas (B) Liquid (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (B) Liquid
Description : In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase. (A) Liquid (B) Gas (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (B) Gas
Description : The ratio of Murphree plate efficiency to point efficiency is always > 1 in a __________ flow model. (A) Plug (B) Perfectly mixed (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (A) Plug
Description : The ratio of Murphree plate efficiency to point efficiency is 1 in a __________ flow model. (A) Plug (B) Perfectly mixed (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (B) Perfectly mixed
Description : Packed column distillation is limited to the column __________ metres. (A) Height < 6 (B) Diameter < 0.6 (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : In case of constant underflow extraction operation, the __________ atall solute concentration. (A) Solids are drained to the same extent (B) Ratio of the insoluble to solution is constant (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : Nusselt number (for forced convection heat transfer) is a function of the __________ number. (A) Prandtl (B) Reynolds (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : Kirchoff’s law applies to __________ radiation. (A) Total (B) Monochromatic (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : . A perfect black body is a perfect __________ of radiation. (A) Absorber (B) Emitter (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : With increase in the oxygen content of the coal, its __________ decreases. (A) Calorific value (B) Caking power (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : Very __________ coals are completely devoid of cokability i.e., it is non-coking. (A) Young (B) Mature (C) Both 'a' & 'b' (D) Neither 'a' nor 'b
Description : Bomb calorimeter can be used to determine the __________ of the coal. (A) Sulphur content (B) Calorific value (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : . A Rotameter works on the principle of __________ pressure drop. (A) Constant (B) Variable (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (A) Constant
Description : Velocity head on sudden enlargement in a horizontal pipe is converted into __________ head. (A) Elevation (B) Pressure (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (B) Pressure
Description : Signal normally used to study non-ideal flow by stimulus response technique is __________ input. (A) Pulse (B) Step (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : The single parameter model proposed for describing non-ideal flow is the __________ model. (A) Tank in series (B) Dispersion (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : Sodium bisulphite is used for __________ water. (A) Deaeration (B) Dechlorination (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : If an ideal solution is formed by mixing two pure liquids in any proportion, then the __________ of mixing is zero (A) Enthalpy (B) Volume (C) Both 'a' & 'b' (D) Neither 'a' nor 'b'
Description : In any spontaneous process, the __________ free energy decreases. (A) Helmholtz (B) Gibbs (C) Both ‘a’ & ‘b’ (D) Neither 'a' nor 'b'
Last Answer : (C) Both ‘a’ & ‘b’
Description : For a constant volume process __________ by the system is used only to increase the internal energy. (A) Heat absorbed (B) Work done (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (B) Work done
Description : he gas law (PV = RT) is true for an __________ change. (A) Isothermal (B) Adiabatic (C) Both (A) & (B) (D) Neither (A) nor (B)
Description : Trouton's ratio of __________ liquids is calculated using Kistyakowsky equation. (A) Polar (B) Non-polar (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (B) Non-polar
Description : Optical activity is a/an __________ property. (A) Additive (B) Constitutive (C) Both (A) & (B) (D) Neither (A) nor (B)