For multiple reactions, the flow pattern within the vessel affects the (A) Size requirement (B) Distribution of reaction products (C) Both (A) and (B) (D) Neither (A) nor (B)

For multiple reactions, the flow pattern within the vessel affects the
(A) Size requirement
(B) Distribution of reaction products
(C) Both (A) and (B)
(D) Neither (A) nor (B)
by

1 Answer

Answer :

(C) Both (A) and (B)
by

Related questions

Pick out the wrong statement. (A) In a batch reactor, which is exclusively used for liquid phase reactions; temperature pressure and composition may vary with time (B) In a semi-batch reactor, one reactant is charged batch wise, while the other reactant is fed continuously (C) In a continuous flow reactor, uniform concentration cannot be maintained throughout the vessel even in a well agitated system (D) In a continuous flow reactor, both the reactants and the products flow out continuously

Description : Pick out the wrong statement. (A) In a batch reactor, which is exclusively used for liquid phase reactions; temperature pressure and composition may vary with time (B) In a semi-batch reactor, ... system (D) In a continuous flow reactor, both the reactants and the products flow out continuously

Last Answer : (C) In a continuous flow reactor, uniform concentration cannot be maintained throughout the vessel even in a well agitated system

Sulphur in metallurgical coal (A) Contributes to its heating value (B) Affects the quality of steel produced as cracks develop on the surface while rolling the steel (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Sulphur in metallurgical coal (A) Contributes to its heating value (B) Affects the quality of steel produced as cracks develop on the surface while rolling the steel (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

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 : 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)

Last Answer : (C) Both (A) & (B)

The exit age distribution of fluid leaving a vessel is used to know the (A) Activation energies of a reaction (B) Reaction mechanism (C) Extent of non-ideal flow in the vessel (D) None of these

Description : The exit age distribution of fluid leaving a vessel is used to know the (A) Activation energies of a reaction (B) Reaction mechanism (C) Extent of non-ideal flow in the vessel (D) None of these

Last Answer : (C) Extent of non-ideal flow in the vessel

Which of the following reactions involve NEITHER oxidation nor reduction? w) burning antimony in chlorine x) decomposition of potassium chlorate y) reaction of sodium with water z) reaction of potassium hydroxide with nitric acid

Description : Which of the following reactions involve NEITHER oxidation nor reduction? w) burning antimony in chlorine x) decomposition of potassium chlorate y) reaction of sodium with water z) reaction of potassium hydroxide with nitric acid

Last Answer : ANSWER: Z -- REACTION OF POTASSIUM HYDROXIDE WITH NITRIC ACID  

In nuclear reactions, __________ number is conserved. (A) Mass (B) Atomic (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : In nuclear reactions, __________ number is conserved. (A) Mass (B) Atomic (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

The solvent used in liquid-liquid extraction should have __________ less than one. (A) Selectivity (B) Distribution co-efficient(C) Both (A) and (B)(D) Neither (A) nor (B)

Description : The solvent used in liquid-liquid extraction should have __________ less than one. (A) Selectivity (B) Distribution co-efficient (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (D) Neither (A) nor (B)

In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow? (A) Discharge of water by a centrifugal pump being run at a constant rpm (B) Water flow in the suction and discharge pipe of a reciprocating pump (C) Water discharge from a vertical vessel in which constant level is maintained (D) Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe

Description : In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow? (A) ... level is maintained (D) Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe

Last Answer : (B) Water flow in the suction and discharge pipe of a reciprocating pump

The 'shanks system' of leaching (i.e., counter-current multiple contact leaching) is used for (A) Recovery of tannis from the tree barks and woods (B) Leaching sodium nitrate from Chilean nitrate bearing rock (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : The 'shanks system' of leaching (i.e., counter-current multiple contact leaching) is used for (A) Recovery of tannis from the tree barks and woods (B) Leaching sodium nitrate from Chilean nitrate bearing rock (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Economy of a multiple effect evaporator depends upon the (A) Heat balance consideration (B) Rate of heat transfer (C) Both (A) and (B) (D) Neither (A) nor (B

Description : Economy of a multiple effect evaporator depends upon the (A) Heat balance consideration (B) Rate of heat transfer (C) Both (A) and (B) (D) Neither (A) nor (B

Last Answer : (A) Heat balance consideration

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)

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)

An isolated system is one in which  (a) mass does not cross boundaries of the system, though energy may do so  (b) neither mass nor energy crosses the boundaries of the system  (c) both energy and mass cross the boundaries of the system  (d) mass crosses the boundary but not the energy  (e) thermodynamic reactions do not occur.

Description : An isolated system is one in which  (a) mass does not cross boundaries of the system, though energy may do so  (b) neither mass nor energy crosses the boundaries of the system  (c) both ... system  (d) mass crosses the boundary but not the energy  (e) thermodynamic reactions do not occur.

Last Answer : Answer : b

An open system is one in which  (a) mass does not cross boundaries of the system, though energy may do so  (b) neither mass nor energy crosses the boundaries of the system  (c) both energy and mass cross the boundaries of the system  (d) mass crosses the boundary but not the energy  (e) thermodynamic reactions do not occur.

Description : An open system is one in which  (a) mass does not cross boundaries of the system, though energy may do so  (b) neither mass nor energy crosses the boundaries of the system  (c) both energy ... system  (d) mass crosses the boundary but not the energy  (e) thermodynamic reactions do not occur.

Last Answer : Answer : c

A closed system is one in which  (a) mass does not cross boundaries of the system, though energy may do so  (b) mass crosses the boundary but not the energy (c) neither mass nor energy crosses the boundaries of the system  (d) both energy and mass cross the boundaries of the system  (e) thermodynamic reactions take place.

Description : A closed system is one in which  (a) mass does not cross boundaries of the system, though energy may do so  (b) mass crosses the boundary but not the energy (c) neither mass nor energy ...  (d) both energy and mass cross the boundaries of the system  (e) thermodynamic reactions take place.

Last Answer : Answer : a

For all positive reaction orders for a particular duty, (A) Mixed reactor is always larger than the plug-flow reactor (B) Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order (C) Reactor size is independent of the type of flow (D) Density variation during reaction affects design

Description : For all positive reaction orders for a particular duty, (A) Mixed reactor is always larger than the plug-flow reactor (B) Ratio of the volume of the mixed reactor to that of the plug-flow ... (C) Reactor size is independent of the type of flow (D) Density variation during reaction affects design

Last Answer : (A) Mixed reactor is always larger than the plug-flow reactor

Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type (A) Parallel flow with equal heat capacities (B) Counter flow with equal heat capacities (C) Counter flow with unequal heat capacities (D) Parallel flow with unequal heat capacities

Description : Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type (A) Parallel flow with equal heat capacities (B) Counter ... (C) Counter flow with unequal heat capacities (D) Parallel flow with unequal heat capacities

Last Answer : (B) Counter flow with equal heat capacities

It is important to balance the chemical equations to satisfy the law of conservation of mass. Which of the following statements of the law is incorrect? (a) The total mass of the elements present in the reactants is equal to the total mass of the elements present in the products. (b) The number of atoms of each element remains the same, before and after a chemical reaction. (c) The chemical composition of the reactants is the same before and after the reaction (d) Mass can neither be created nor can it be destroyed in a chemical Reaction.

Description : It is important to balance the chemical equations to satisfy the law of conservation of mass. Which of the following statements of the law is incorrect? (a) The total mass of the elements present in ... the reaction (d) Mass can neither be created nor can it be destroyed in a chemical Reaction.

Last Answer : Answer : (c) The chemical composition of the reactants is the same before and after the reaction

The exit age distribution of a fluid leaving a vessel (denoted by E) is used to study the extent of non-ideal flow in the vessel. The value of ∫∞ 0 E.dt is (A) 0 (B) 1 (C) ∞ (D) √2π

Description : The exit age distribution of a fluid leaving a vessel (denoted by E) is used to study the extent of non-ideal flow in the vessel. The value of ∫∞ 0 E.dt is (A) 0 (B) 1 (C) ∞ (D) √2π

Last Answer : (B) 1

Income from operations appears on a. both a multiple-step and a single-step income statement. b. neither a multiple-step nor a single-step income statement. c. a single-step income statement. d. a multiple-step income statement.

Description : Income from operations appears on a. both a multiple-step and a single-step income statement. b. neither a multiple-step nor a single-step income statement. c. a single-step income statement. d. a multiple-step income statement.

Last Answer : d. a multiple-step income statement.

In Hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen (A) Enhances the desulphurisation process (B) Minimises coke formation (C) Both (A) and (B) (D) Neither (A) nor (B

Description : In Hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen (A) Enhances the desulphurisation process (B) Minimises coke formation (C) Both (A) and (B) (D) Neither (A) nor (B

Last Answer : (C) Both (A) and (B)

Use of grinding aids results in the (A) Enhanced production rate (B) Finer products (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Use of grinding aids results in the (A) Enhanced production rate (B) Finer products (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (D) Neither (A) nor (B)

The main function of a muffle in the muffle furnace is to (A) Protect the charge from the effects of the products of combustion (B) Smooth out temperature inequalities on the combustion side of the muffle wall (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : The main function of a muffle in the muffle furnace is to (A) Protect the charge from the effects of the products of combustion (B) Smooth out temperature inequalities on the combustion side of the muffle wall (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Nicotine is(A) A volatile alkaloid (B) Obtained by treating by-products of the tobacco processing industry (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Nicotine is(A) A volatile alkaloid (B) Obtained by treating by-products of the tobacco processing industry (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Stefan's law describes the mass transfer by (A) Diffusion (B) Bulk flow (C) Both 'a' & 'b' (D) Neither 'a' nor 'b'

Description : Stefan's law describes the mass transfer by (A) Diffusion (B) Bulk flow (C) Both 'a' & 'b' (D) Neither 'a' nor 'b'

Last Answer : (C) Both 'a' & 'b'

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)

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

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)

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

With diminishing cross-sectional area in case of subsonic flow in a converging nozzle, the (A) Velocity increases (B) Pressure decreases (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : With diminishing cross-sectional area in case of subsonic flow in a converging nozzle, the (A) Velocity increases (B) Pressure decreases (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Hydraulic mean depth (Dm) for a circular pipe of diameter 'D' flowing full is 0.25 D. For a circular channel, at Dm = 0.3 D, gives the condition for the maximum (A) Flow rate (B) Mean velocity (C) Both 'a' & 'b' (D) Neither 'a' nor 'b

Description : Hydraulic mean depth (Dm) for a circular pipe of diameter 'D' flowing full is 0.25 D. For a circular channel, at Dm = 0.3 D, gives the condition for the maximum (A) Flow rate (B) Mean velocity (C) Both 'a' & 'b' (D) Neither 'a' nor 'b

Last Answer : (B) Mean velocity

Mass velocity in case of steady flow and through a constant cross￾section conduit is independent of the (A) Temperature (B) Pressure (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Mass velocity in case of steady flow and through a constant cross￾section conduit is independent of the (A) Temperature (B) Pressure (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the (A) Wall roughness (B) Reynolds number (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the (A) Wall roughness (B) Reynolds number (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids (A) Having high viscosities (B) Moving at low velocities (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids (A) Having high viscosities (B) Moving at low velocities (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Fanning friction factor for laminar flow of fluid in a circular pipe is (A) Not a function of the roughness of pipe wall (B) Inversely proportional to Reynolds number (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Fanning friction factor for laminar flow of fluid in a circular pipe is (A) Not a function of the roughness of pipe wall (B) Inversely proportional to Reynolds number (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Fanning friction factor equation applies to the __________ fluid flow. (A) Non-isothermal condition of (B) Compressible (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Fanning friction factor equation applies to the __________ fluid flow. (A) Non-isothermal condition of (B) Compressible (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (D) Neither (A) nor (B)

. In magnetic flow meters, voltage generation is (A) Due to the motion of conducting fluid through an externally generated uniform field (B) Proportional to the fluid velocity (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : . In magnetic flow meters, voltage generation is (A) Due to the motion of conducting fluid through an externally generated uniform field (B) Proportional to the fluid velocity (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Aerodynamic noise resulting from turbulent gas flow is the most prevalent source of valve noise in fluid flow control. It is caused due to (A) Reynold stresses (B) Shear forces (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Aerodynamic noise resulting from turbulent gas flow is the most prevalent source of valve noise in fluid flow control. It is caused due to (A) Reynold stresses (B) Shear forces (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

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 : 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)

Last Answer : (C) Both (A) & (B)

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 : 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)

Last Answer : (C) Both (A) & (B)

In case of a P.F.R., there (A) May be lateral mixing of fluid (B) Should not be any mixing along the flow path (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : In case of a P.F.R., there (A) May be lateral mixing of fluid (B) Should not be any mixing along the flow path (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Work done may be calculated by the expression ∫ p dA for __________ processes. (A) Non-flow reversible (B) Adiabatic (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Work done may be calculated by the expression ∫ p dA for __________ processes. (A) Non-flow reversible (B) Adiabatic (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

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'

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'

Which of the following reactions involves neither oxidation nor reduction ?

Description : Which of the following reactions involves neither oxidation nor reduction ?

Last Answer : Which of the following reactions involves neither oxidation nor reduction ? A. `CrO_(4)^(2-)rarrCr_(2)O_(7)^(2-)` ... 2)O_(3)^(2-)rarrS_(4)O_(6)^(2-)`

Why do aldehydes undergo nucleophilic addition reactions while esters undergo nucleophilic acyl substitution reactions? (a) The carbonyl carbon of an ester is more electrophilic than that of an aldehyde. (b) Aldehydes are more sterically hindered than esters. (c) Once the nucleophile adds to an aldehyde, the tetrahedral intermediate is too sterically hindered to eliminate one of the attached groups. (d) Once the nucleophile adds to an aldehyde, neither H− nor R− can be eliminated since they are strongly basic

Description : Why do aldehydes undergo nucleophilic addition reactions while esters undergo nucleophilic acyl substitution reactions? (a) The carbonyl carbon of an ester is more electrophilic than that of an aldehyde. (b) ... adds to an aldehyde, neither H− nor R− can be eliminated since they are strongly basic

Last Answer : Once the nucleophile adds to an aldehyde, neither H− nor R− can be eliminated since they are strongly basic

There is generally an agreement within the auditing profession and the courts that the auditor a. Is both a guarantor and an insurer of the financial statements. b. Is a guarantor but not an insurer of the statements. c. Is an insurer but not a guarantor of the statements. d. Is neither a guarantor nor an insurer of financial statements

Description : There is generally an agreement within the auditing profession and the courts that the auditor a. Is both a guarantor and an insurer of the financial statements. b. Is a guarantor but not an ... not a guarantor of the statements. d. Is neither a guarantor nor an insurer of financial statements

Last Answer : Is neither a guarantor nor an insurer of financial statements

In the reversible reaction of the type, A + B ⇌ AB, in general (A) Both forward and backward reactions will be exothermic (B) Neither of the reactions will be endothermic (C) The combination reaction will be exothermic, while the dissociation reaction will be endothermic (D) The combination reaction will be endothermic, while the dissociation reaction will be exothermic

Description : In the reversible reaction of the type, A + B ⇌ AB, in general (A) Both forward and backward reactions will be exothermic (B) Neither of the reactions will be endothermic (C) ... will be endothermic (D) The combination reaction will be endothermic, while the dissociation reaction will be exothermic

Last Answer : (C) The combination reaction will be exothermic, while the dissociation reaction will be endothermic

Non-catalytic fluid-solid reactions are represented by __________ model. (A) Continuous reaction (B) Unreacted core (C) Both (A) and (B) (D) Neither (A) and (B)

Description : Non-catalytic fluid-solid reactions are represented by __________ model. (A) Continuous reaction (B) Unreacted core (C) Both (A) and (B) (D) Neither (A) and (B)

Last Answer : (C) Both (A) and (B)

The mechanism of size reduction by a hammer mill is by impact and attrition between the (A) Grinding element & the housing (B) Feed particles (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : The mechanism of size reduction by a hammer mill is by impact and attrition between the (A) Grinding element & the housing (B) Feed particles (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

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 : 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

Last Answer : (C) Both (A) & (B)

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 : 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)

Last Answer : (C) Both (A) & (B)

Toothed roll crushers achieve size reduction by (A) Tearing (shear) and compression (B) Impact and attrition (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Toothed roll crushers achieve size reduction by (A) Tearing (shear) and compression (B) Impact and attrition (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

The uniformity of a gas fluidised bed depends upon the __________ of the solid particles. (A) Size (B) Surface properties (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : The uniformity of a gas fluidised bed depends upon the __________ of the solid particles. (A) Size (B) Surface properties (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)