17851. An elementary liquid phase decomposition reaction is to be carried out in a CSTR. The design equation is
17852. Kinetics of a solid catalysed reaction can best be studied in a __________ reactor.
17853. According to Arhenious equation of temperature dependency of rate constant for an elementary reaction
17854. The reactions of high molecularity are rare, because
17855. Which of the following is the most suitable for isothermal operation ?
17856. For a first order chemical reaction, the rate constant
17857. Which of the following is an autocatalytic reaction ?
17858. The performance of a cascade of CSTR's can be improved by adding
17859. A multiple reaction may be classified as a __________ reaction.
17860. Holding time for flow reactors is __________ the space time, for constant fluid density
17861. A report of an auditor which contains certain conditions or reservations
17862. The order of the reaction, , is
17863. Arhenious equation shows the variation of __________ with temperature.
17864. When a catalyst increases the rate of chemical reaction, the rate constant
17865. In which of the following reactions, thee-quilibrium will shift to the right, if the total pressure is increased ?
17866. The catalyst in a first order chemical reaction changes the
17867. Oil is hydrogenated using nickel catalyst in a __________ reactor.
17868. The performance equations for constant density systems are identical for
17869. Reaction rate of a first order reaction, which is half completed in 23 minutes will be
17870. Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor ?
17871. The half life period 't' of a zero order reaction, , is equal to
17872. The point selectivity of the product 'Y' in the reaction,
is equal to
17873. In case of calcination of limestone, CaCO3 CaO + CO2, the addition of more of CaO will result in __________ in the concentration of CO2.
17874. The rate of a homogeneous reaction is a function of
17875. In the fluid catalytic cracker (FCC), the cracking reaction is __________ (A) and the regeneration is___(B) __________
17876. Profit prior to incorporation is a
17877. Promoter is added to the catalyst to improve its
17878. An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will
17879. When a high liquid hold up is required in a reactor for gas liquid reaction, use __________ coloumn.
17880. In an exothermic reaction, the energy of the reacting substances as compared to that of products is
17881. For a tubular flow reactor with uniform concentration and temperature, the independent variable is
17882. Who appoints first auditors of a Company?
17883. Rights co- exist with ......... in a democratic country?
17884. The extent of a reaction is
17885. Higher free energy of activation of a chemical reaction (at a given temperature) implies
17886. Calcination reaction of limestone (CaCO3 CaO + CO2) goes to completion in the rotary kiln, because
17887. The reactions with low activation energy are
17888. Molecularity of an elementary reaction, P + Q R + S is
17889. Which of the following is not endothermic in nature ?
17890. Magnetic tape is not practical for applications where data must be quickly recalled because tape is?
17891. The space time is equivalent to the holding time in a steady state mixed reactor for
17892. The dispersion number of perfect mixed flow is
17893. For the reaction , the rate of formation of Z is 0.2 gm mole/litre.hr. what is the rate of disappearance of X in gm mole/litre. hr ?
17894. An irreversible aqueous phase reaction, A + B P, is carried out in an adiabatic mixed flow reactor. A feed containing 4kmole/m3 of each A and B enters the reactor at 8m3 /hr. If the temperature of the exit stream is never to exceed 390 K, what is the maximum inlet feed temperature allowed?
Data: Heat of reaction = - 50 kJ/mole
Density of the reacting mixture = 1000kg/m3
Specific heat of reacting mixture = 2kJ/kg.K
The above data can be assumed to be independent of temperature and composition.
17895. For a heterogenous catalytic reaction, A + B C, with equimole feed of A and B, the initial rate - rA0 is invariant with total pressure. The rate controlling step is
17896. Half life period of a first order irreversible reaction A B is
17897. What do you call the first meeting of a Company?
17898. Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm2 /sec.D1 = diffusion co-efficient; cm2/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm3/sec . V = volume, cm3.)
17899. Carriage inwards appears in
17900. The energy of activation of a chemical reaction