REACTOR DESIGN

Question 1

Rate of chemical reaction is independent of the concentration of reactants for
(a) zero order reaction
(b) third order reaction
(c) consecutive reaction
(d) none of these

Answer 1

zero order reaction

Question 2

Which of the following is not a unit of reaction rate?
(a) moles formed/(surface of catalyst) (time)
(b) moles formed/(volume of reactor) (time)
(c) mole formed/(volume of catalyst) (time)
(d) none of these

Answer 2

none of these

Question 3

If “n” is the order of reaction then unit of rate constant is
(a) 1/
(time) (concentration)n-1
(b) (time)-1(concentration)n-1
(c) (time)n-1 (concentration)
(d) none of these

Answer 3

(a) 1/
(time) (concentration)n-1

Question 4

Which of the following is a controlling factor in very fast heterogeneous reaction?
(a) heat and mass transfer effects
(b) pressure
(c) temperature
(d) composition of reactant

Answer 4

heat and mass transfer effects

Question 5

Rate determining step in a reaction consisting of a number of step in series is the
(a) fastest step
(b) slowed step
(c) intermediate step
(d) data insufficient; can’t be predict

Answer 5

slowed step

Question 6

Variables affecting the rate of homogeneous reactions are
(a) pressure and temperature only
(b) temperature and composition only
(c) pressure and composition only
(d) pressure, temperature and composition

Answer 6

pressure, temperature and composition

Question 7

Chemical kinetics can predict the
(a) rate of reaction
(b) feasibility of reaction
(c) both (a) and (b)
(d) none of these

Answer 7

rate of reaction

Question 8

Velocity of a chemical reaction
(a) decreases with increase in temperature
(b) increases with increase of pressure of reactant for all reactions
(c) decreases with increase of reactant concentration
(d) none of these

Answer 8

none of these

Question 9

Sum of the powers of the concentration terms in the rate equation is called the
(a) order of the reaction
(b) overall order of the reaction
(c) molecularity of the reaction
(d) none of these

Answer 9

overall order of the reaction

Question 10

Molecularity of a reaction
(a) is always equal to the overall order of reaction
(b) may not be equal to the order of reaction
(c) can’t have a fractional value
(d) both (b) and (c)

Answer 10

both (b) and (c)

Question 11

Inversion of cane sugar is an example of
(a) unimolecular reaction with first order
(b) bimolecular reaction with second order
(c) bimolecular reaction with first order
(d) unimolecular reaction with second order

Answer 11

bimolecular reaction with first order

Question 12

Concentration of the limiting reactant (with initial concentration of a moles/liter) after time t is (a-x).Then t for a first order reaction is given by
(a) kt = ln (a/a-x)
(b) kt = x/a(a-x)
(c) kt = ln (a-x/a)
(d) k.t = a (a-x)/x

Answer 12

kt = ln (a/a-x)

Question 13

Half life period of a chemical reaction is
(a) the time required to reduce the concentration of the reacting substance to half its initial value
(b) half of the space time of a reaction
(c) half of the residence time of a reaction
(d) none of these

Answer 13

the time required to reduce the concentration of the reacting substance to half its initial value

Question 14

Fill up the blanks:
Half-life period for a first order reaction is………………….. the initial concentration of the reactant
(a) directly proportional to
(b) inversely proportional to
(c) independent of
(d) none of these

Answer 14

independent of

Question 15

Fill up the blanks from among the alternatives given below: In a first order reaction the time required to reduce the concentration of reactant from 1 mole/liter to 0.5 mole/liter will be …………. that required to reduce it from 10 moles/liter to 5 moles/liter in the same volume
(a) more than
(b) less than
(c) same as
(d) data insufficient; can’t be predicted

Answer 15

same as

Question 16

Specific rate constant for a second order reaction
(a) is independent of temperature
(b) varies with temperature
(c) depends on the nature of the reactants
(d) both (b) and (c)

Answer 16

both (b) and (c)

Question 17

The reaction in which rate equation corresponds to a stoichiometric equation is called
(a) elementary reaction
(b) non-elementary reaction
(c) parallel reaction
(d) autokinetic reaction

Answer 17

elementary reaction

Question 18

Equilibrium of a chemical reaction as viewed by kinetics is a
(a) dynamic steady state
(b) static steady state
(c) dynamic unsteady state
(d) none of these

Answer 18

dynamic steady state

Question 19

For a zero order reaction, concentration of product increases with
(a) increase of reaction time
(b) increase in initial concentration
(c) total pressure
(d) decrease in total pressure

Answer 19

increase of reaction time

Question 20

Fill up the blanks
Arrhenius equation shows the variation of __________with temperature
(a) Reaction rate
(b) Rate constant
(c) Energy of activation
(d) Frequency factor

Answer 20

Rate constant

Question 21

The energy of activation of a chemical reaction
(a) is same as heat of reaction at constant pressure
(b) is the minimum energy which the molecules must have before the reaction can take place
(c) varies as fifth power of the temperature
(d) both (b) and (c)

Answer 21

is the minimum energy which the molecules must have before the reaction can take place

Question 22

Rate constant ‘k’ and the absolute temperature T are related by collision theory (for bimolecular) as
(a) k  T 1.5
(b) k  e –E/RT
(c) k  T
(d) k  T

Answer 22

k  T

Question 23

Transition state theory relates the above quantities as
(a) k  e –E/RT
(b) k  Te –E/RT
(c) k  T
(d) k  T 1.5

Answer 23

NO ANSWER

Question 24

Reactions with high activation energy are
(a) very temperature sensitive
(b) temperature insensitive
(c) always irreversible
(d) always reversible

Answer 24

very temperature sensitive

Question 25

In autocalytic reactions (a) one of the reactants acts as a catalyst (b) one of the products acts as a catalyst (c) catalyst has very high selectivity (d) no catalyst is used

Answer 25

one of the products acts as a catalyst

Question 26

With increase in temperature, the equilibrium conversion of a reversible exothermic reaction (a) decreases (d) increases (c) remain unaffected (d) decreases linearly with temperature

Answer 26

decreases

Question 27

With decrease in temperature, the equilibrium conversion of a reversible endothermic reaction (a) decreases (b) increases (c) remains unaffected (d) increases linearly with temperature

Answer 27

decreases

Question 28

The equilibrium constant of a chemical reaction (a) increases in the presence of catalyst (b) decreases in the presence of catalyst (c) remains unaffected in the presence of a catalyst (d) can either increase or decrease; depends on the type of catalyst

Answer 28

remains unaffected in the presence of a catalyst

Question 29

Conversion increases with increase in temperature of (a) Autocatalytic reaction (b) Irreversible reaction (c) Reversible endothermic reaction (d) Reversible exothermic reaction

Answer 29

Reversible endothermic reaction

Question 30

The heat of reaction (a) depends on the pressure only (b) depends on the mechanism of reaction only (c) depends on both pressure and mechanism of reaction (d) is independent of the mechanism of reaction

Answer 30

is independent of the mechanism of reaction

Question 31

Integral method for analyzing the kinetic data is used (a) when the data are scattered (b) for testing specific mechanisms with simple rate expression (c) both (a) and (b) (d) none of these

Answer 31

both (a) and (b)

Question 32

Differential method for analyzing the kinetic data is used (a) for testing complicated mechanisms (b) when the data are scattered (c) when rate expressions are very simple (d) none of these

Answer 32

for testing complicated mechanisms

Question 33

Exposure of a photographic plate to produce a latent image is an example of (a) Very slow reaction (b) Very fast reaction (c) Photochemical reaction (d) Both (b) and (c)

Answer 33

Both (b) and (c)

Question 34

A trickle bed reactor is one which (a) has altogether three streams either entering or leaving (b) processes three reactants at different flow rates (c) processes three reactant with same flow rate (d) employs all the three phases (i.e. solid liquid and gas)

Answer 34

employs all the three phases (i.e. solid liquid and gas)

Question 35

According to Arrhenius equation of temperature dependency of rate constant for an elementary reaction (a) k  T (b) k  e-E/RT (c) k  Te-E/RT (d) none of these

Answer 35

k  e-E/RT

Question 36

With increases in temperature, the rate constant obeying Arrhenius equation (a) increases (b) decreases (c) decreases exponentially with temperature (d) can either increase or decrease, depends on the frequency factor

Answer 36

increases

Question 37

A batch reactor is characterized by (a) constant residence time (b) the variation in extent of reaction and properties of the reaction mixture with time (c) variation in reactor volume (d) very low conversion

Answer 37

the variation in extent of reaction and properties of the reaction mixture with time

Question 38

A plug-flow reactor is characterized by (a) high capacity (b) presence of axial mixing (c) presence of lateral mixing (d) constant composition and temperature of reaction mixture

Answer 38

presence of lateral mixing

Question 39

In a semi-batch reactor (a) velocity of reaction can be controlled (b) maximum conversion can be controlled (c) both the as reactants flow counter-currently (d) residence time is constant

Answer 39

velocity of reaction can be controlled

Question 40

A back mix reactor (a) is same as plug-flow reactor (b) is same as ideal stirred tank reactor (c) employs mixing in axial direction only (d) is most suitable for gas phase reaction

Answer 40

is same as ideal stirred tank reactor

Question 41

In a continuous flow stirred tank reactor the composition of the exit stream (a) is same as that in the reactor (b) is different than that in the reactor (c) depends upon the flow rate of inlet stream (d) none of these

Answer 41

Is same as that in the reactor

Question 42

In an ideal tubular-flow reactor (a) there is no mixing in longitudinal direction (b) mixing takes place in radial direction (c) there is a uniform velocity across the radius (d) all (a), (b) and (c)

Answer 42

all (a), (b) and (c)

Question 43

Space velocity (a) describes the extensive operating characteristics of a tubular flow reactor (b) is the maximum feed rate per unit volume of reactor for is given conversion (c) is a measure of the case of the reaction job (d) all (a), (b) and (c)

Answer 43

all (a), (b) and (c)

Question 44

A high space velocity means that a given (a) reaction can be accomplished with small reactor (b) conversion can be obtained with a high feed rate (c) both (a) and (b) (d) none of these

Answer 44

both (a) and (b)

Question 45

Space time in flow reactor is (a) usually equal to the residence time (b) the reciprocal of the space velocity (c) a measure of its capacity (d) both (a) and (c)

Answer 45

both (a) and (c)

Question 46

A space-time of 3 hours for a flow reactor means that (a) the time required to process one reactor volume of feed (measured at specified conditions) is 3 hour (b) three reactor volumes of feed can be processed every hour (c) it takes three hours to dump the entire volume of the reaction with feed (d) conversion is cent per cent after three hour

Answer 46

the time required to process one reactor volume of feed (measured at specified conditions) is 3 hour

Question 47

Space time equals the mean residence time (a) when the density of the reaction mixture is constant (b) for large diameter tubular reactor (c) for narrow diameter tubular reactor (d) for CSTR

Answer 47

when the density of the reaction mixture is constant

Question 48

Fluidized bed reactor is characterized by (a) uniformity of temperature (b) comparatively smaller equipment (c) very small pressure drop (d) absence of continuous catalyst regeneration facility

Answer 48

uniformity of temperature

Question 49

A batch reactor is (a) suitable for gas-phase reaction on commercial scale (b) suitable for liquid –phase reaction involving small production rate (c) least expensive to operate for a given rate (d) most suitable for very large production rate

Answer 49

Suitable for liquid–phase reaction involving small production rate

Question 50

Which of the following is the most suitable for very high-pressure gas-phase reaction? (a) batch reactor (b) tubular flow reactor (c) stirred tank reactor (d) fluidized bed reactor

Answer 50

tubular flow reactor

Question 51

For nearly isothermal operation involving large reaction time in a liquid –phase reaction, the most suitable reactor is (a) stirred tank reactor (b) tubular flow reactor (c) batch reactor (d) fixed bed reactor

Answer 51

stirred tank reactor

Question 52

A stirred tank reactor compared to tubular-flow reactor provides (a) more uniform operation condition (b) permits operation at the optimum temperature for a long reaction time (c) higher overall selectivity for a first order consecutive reaction (d) all (a), (b) and (c)

Answer 52

all (a), (b) and (c)

Question 53

For the same residence time, which will give the maximum conversion? (a) single stirred tank (v=5liters) (b) two stirred tank (each of 2.5liters) in series (c) stirred tank followed by tubular flow reactor (each 2.5liters) (d) single tubular flow reactor (v=5liters)

Answer 53

single tubular flow reactor (v=5liters)

Question 54

Oil hydrogenated using nickel catalyst in a (a) batch reactor (b) slurry reactor (c) fluidized bed reactor (d) fixed bed reactor

Answer 54

slurry reactor

Question 55

A second order reaction of the form A+B C is called a pseudo-first order reaction when (a) CAO = CBO (b) CAO > CBO (c) CAO  CBO (d) CBO > CAO

Question 55

A second order reaction of the form A+B C is called a pseudo-first order reaction when (a) CAO = CBO (b) CAO > CBO (c) CAO  CBO (d) CBO > CAO

Question 55

A second order reaction of the form A+B->C is called a pseudo-first order reaction when (a) CAO = CBO (b) CAO > CBO (c) CAO  CBO (d) CBO > CAO

Answer 55

CBO > CAO

Question 56

A first order irreversible reaction A->B is carried separately in a constant volume as well as a in a variable volume reactor for a particular period. It signifies that (a) both conversion as well as concentration are same in the two reactors (b) conversion in both will be the same but concentrations will be different in the two reactors (c) both the conversion as well as concentrations will be different in the two reactors (d) none of these

Answer 56

conversion in both will be the same but concentrations will be different in the two reactors

Question 57

A space velocity of 5 hour means that (a) five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour (b) after five hours, reactor is being filled with the feed (c) cent percent conversion can be achieved in at least 5 hours (d) a fixed conversion of a given batch of feed takes 5 hours

Answer 57

five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour

Question 58

Which of the following fixes the volume of a batch reactor for a particular conversion and production rate? (a) operating conditions (e.g. pressure and temperature) (b) rate constant (c) density of mixture (d) none of these

Answer 58

density of mixture

Question 59

In a CSTR (a) reaction rate varies with time (b) concentration varies with time (c) both (a) and (b) occur (d) neither (a) nor (b) occurs

Answer 59

neither (a) nor (b) occurs

Question 60

The use of space-time is preferred over the mean residence time in the design of (a) batch reactor (b) ideal tubular-flow reactor (c) slurry reactor (d) CSTR

Answer 60

ideal tubular-flow reactor

Question 61

For all positive reaction orders for a particular duty (a) mixed reactor is always larger than the plug-flow reactor (b) the 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

Answer 61

mixed reactor is always larger than the plug-flow reactor

Question 62

With the same reaction time, initial concentration and feed rate, the reaction 2A->B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be (a) higher in P.F. reactor (b) higher in CSTR (c) same in both the reactors (d) data insufficient; can’t be predicted

Answer 62

higher in P.F. reactor

Question 63

For an autocatalytic reactor, the suitable reactor set up is (a) P.F. reactors in series (b) CSTR in series (c) CSTR followed by P.F. reactor (d) P.F. reactor followed by CSTR

Answer 63

CSTR followed by P.F. reactor

Question 64

For multiple reactions, the reaction within the vessel affects the (a) Size requirement (b) Distribution of reaction product (c) Both (a) and (b) (d) Neither (a) nor (b)

Answer 64

Both (a) and (b)

Question 65

A first order reaction requires two unequal sized CSTR. Which of the following gives a higher yield? (a) Large reactor followed by smaller one (b) Smaller reactor followed by larger one (c) Either of the arrangement (a) or (b) will give the same yield (d) Data insufficient; can’t be predicted

Answer 65

Either of the arrangement (a) or (b) will give the same yield

Question 66

A first order reaction requires two equal sized CSTR. The conversion is (a) Less when they are connected in series (b) More when they are connected in series (c) More when they are connected in parallel (d) Same whether they are connected in series or parallel

Answer 66

More when they are connected in series

Question 67

The concentration of A in a first order reaction A →B decreases (a) Linearly with time (b) Exponentially with time (c) Very abruptly toward the end of the reaction (d) Logarithmically with time

Answer 67

Exponentially with time

Question 68

The concentration of A in a first order reaction A →B decreases (a) Linearly with time (b) Exponentially with time (c) Very abruptly toward the end of the reaction (d) Logarithmically with time

Question 69

Which of the following is most suitable for isothermal reaction ? (a) Batch reactor (b) Back-mix reactor (c) Plug-flow reactor (d) Fixed bad reactor

Answer 69

Back-mix reactor

Question 70

Which of the following is the optimum operating condition for an exothermic reversible reaction-taking place in a plug-flow reactor (a)Temperature should be high in the beginning and decreased towards the end of the reaction (b) Very low temperature should be used throughout the reaction (c) Very high temperature should be used throughout the reaction (d) None of these

Answer 70

Temperature should be high in the beginning and decreased

Question 71

With increase in the space-time of an irreversible isothermal reaction being carried out in a P.F. reactor, the conversion will (a) Increase (b) Decrease (c) Remain same (d) Data sufficient; can’t be predicted

Answer 71

Increase

Question 72

The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way that the (a) Space time for each parallel line is same (b) Space time for parallel lines is different (c) Larger reactors have more space time compared to smaller ones (d) None of these

Answer 72

Space time for each parallel line is same

Question 73

Back mixing is most predominant in (a) A well stirred reactor (b) Plug-flow reactor (c) A single CSTR (d) CSTR connected in series

Answer 73

A single CSTR

Question 74

The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called (a) Operational yield (b) Relative yield (c) Selectivity (d) None of these

Answer 74

Selectivity

Question 75

The performance of a cascade of CSTR’s can be improved by adding (a) a P.F. reactor in series (b) a P.F. reactor in parallel (c) More CSTR’s in series (d) More CSTR’s in parallel

Answer 75

More CSTR’s in series

Question 76

An auto thermal reactor is (a) Most suitable for a second order reaction (b) Most suitable for a reversible reaction (c) Completely self supporting in its thermal energy requirements (d) Isothermal in nature

Answer 76

Completely self supporting in its thermal energy requirements

Question 77

For series reaction,the (a) Relative yield is always greater for plug-flow reactor tha) for the single CSTR of the same volume (b) Statement in a is wrong (c) Relative yield decreases with increasing conversion (d) Both (a) and (c) hold good

Question 78

When a high liquid hold up is required in a reactor for a gas-liquid reaction, use (a) Packed column (b) Spray column (c) Tray column (d) Bubble column

Answer 78

Bubble column

Question 79

For reactions in parallel viz. A→P (desired product) and A→Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a (a) Batch rector is preferred over a single CSTR for high yield (b) Tubular rector is preferred over a single CSTR for high yield (c) Both (a) and (b) (d) A single CSTR is the most suitable

Answer 79

Both (a) and (b)

Question 80

In question 78, high yield would be favored ( for gas phase reactions) (a) At high pressure (b) At low pressure (c) By the presence of the inner gases in the reactabt stream (d) Both (b) and (c)

Answer 80

At high pressure

Question 81

When all the limiting reactant is consumed in the reaction, the operation yield (a) Is greater than relative yield (b) Is smaller than relative yield (c) Equals the relative yield (d) Can be greater or smaller than relative yield, depends on the type of reaction

Answer 81

Equals the relative yield

Question 82

Design of heterogeneous catalytic reactor involves consideration of (a) Only chemical steps (b) Only physical steps (c) Both (a) and (b) (d) Neither (a) and (b)

Answer 82

Both (a) and (b)

Question 83

Pick out the wrong statement (a) A catalyst does not alter the final position of equilibrium in a reversible reaction. (b) A catalyst initiate a reaction (c) A catalyst is specific in action (d) A catalyst remain unchanged in chemical composition at the end of the reaction

Answer 83

A catalyst initiate a reaction

Question 84

Catalyst is a substance which (a) Increases the speed of chemical reaction (b) Decreases the speed of chemical reaction (c) Can either increase or decrease the speed of chemical reaction (d) Alters the value of equilibrium constant in a reversible reaction

Answer 84

Can either increase or decrease the speed of chemical reaction

Question 85

Catalyst carriers (a) Have very high selectivity (b) Increase the activity of a catalyst (c) Provide large surface area with small amount of active material (d) Inhibit catalyst poisoning

Answer 85

Provide large surface area with small amount of active material

Question 86

A catalyst promoter (a) Improves the activity of a catalyst (b) Acts as a catalyst support (c) Itself has very high activity (d) All (a) (b) and (c)

Answer 86

Improves the activity of a catalyst

Question 87

A catalyst inhibitor (a) Lessens its selectivity (b) May be useful for suppressing undesirable side reaction (c) Is added in small quantity during the catalyst manufacture itself (d) All (a) (b) and (c)

Answer 87

All (a) (b) and (c)

Question 88

Carbon catalyst accumulated on the catalyst used in the gas oil cracking lies in the category of : (a) Deposited poison (b) Chemisorbed poison (c) Selectivity poison (d) Stability poison

Answer 88

Deposited poison

Question 89

Slurry reactors are characterised by (a) Lack of intra-particle diffusion resistance (b) Presence of two mobile phase (c) Both (a) and (b) (d) Neither (a) nor (b)

Answer 89

Lack of intra-particle diffusion resistance

Question 90

A reaction . A→ 3 B is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increase 3 times in 6 minutes. The final conversion is (a) 0.33 (b) 0.50 (c) 1 (d) Data insufficient, can’t be predicted

Answer 90

1

Question 91

The most suitable reactor for carrying out an auto-thermal reaction is (a) Batch reactor (b) CSTR (c) Semi-batch reactor (d) Plug-flow reactor

Answer 91

Semi-batch reactor

Question 92

Which of the following factors control the design of a fluid solid reactor? (a) The reaction kinetics for single particle (b) The size distribution of solids being treated (c) Flow patterns of solids and fluids in the reactor (d) All (a) (b) and (c)

Answer 92

All (a) (b) and (c)

Question 93

Kinetics of solid catalyst reaction can be studied in a (a) Batch reactor (b) Plug-flow reactor (c) Mixed reactor (d) None of these

Answer 93

Mixed reactor

Question 94

For high conversion in highly exothermic solid catalyzed reaction, use a (a) Fixed bed reactor (b) Fluidized bed reactor followed by a fixed bed reactor (c) Fixed bed reactor followed by a fluidized bed reactor (d) Fluidized bed reactor

Answer 94

Fluidized bed reactor followed by a fixed bed reactor

Question 95

For high conversion in highly exothermic solid catalyzed reaction, use a (a) Fixed bed reactor (b) Fluidized bed reactor followed by a fixed bed reactor (c) Fixed bed reactor followed by a fluidized bed reactor (d) Fluidized bed reactor

Question 96

For high conversion in highly exothermic solid catalyzed reaction, use a (a) Fixed bed reactor (b) Fluidized bed reactor followed by a fixed bed reactor (c) Fixed bed reactor followed by a fluidized bed reactor (d) Fluidized bed reactor

Question 97

In case of staged packed bed reactors carrying out exothermic reaction, use (a) High recycle for pure glass (b) Plug flow for dilute liquid require no large preheating of feed (c) Cold shot operations for a dilute solution requiring large preheating to bring the steam up to the reaction temperature (d) All (a) (b) and (c)

Answer 97

All (a) (b) and (c)

Question 98

Which of the following will give the maximum gas conversion ? (a) Fixed bed reactor (b) fluidized reactor (c) Semi-fluidized reactor (d) Plug flow catalytic reactor

Answer 98

Semi-fluidized reactor

Question 99

Which of the following factors control the deactivation of a porous catalyst pellet? (a) Decay reactions (b) Pore diffusion (c) Form of surface attack of poison (d) All (a) (b) and (c)

Answer 99

All (a) (b) and (c)

Question 100

BET apparatus is used to determine the (a) Specific surface of porous catalyst (b) Pore size distribution (c) Pore diameter (d) Porosity of the catalyst bed

Answer 100

Specific surface of porous catalyst

Question 101

If pore diffusion is the controlling step in a solid catalyzed reaction the catalyst (a) Porosity is very important (b) Porosity is less importance (c) Internal surface is utilized efficiently (d) None of these

Answer 101

Porosity is less importance

Question 102

BET apparatus (a) Measure the catalyst surface area directly (b) Operates at very high pressure (c) Is made entirely by stainless steel (d) None of these

Answer 102

None of these

Question 103

Helium-mercury method can be used to determine the (a) Pore volume (b) Solid density (c) Porosity of catalyst particle (d) All (a) (b) and (c)

Answer 103

All (a) (b) and (c)