31351. Which of the following resistances is not involved in a gas phase catalytic (gas-solid) reaction ?
31352. If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is
31353. A batch adiabatic reactor at an initial temperature of 373°K is being used for the reaction, A B. Assume the heat of reaction is - 1kJ/mole at 373°K and heat capacity of both A and B to be constant and equal to 50J/mole.K. The temperature rise after a conversion of 0.5 will be
31354. If CA is the quantity of reactants initially present, the quantity left after 'n' half periods will be equal to
31355. A photochemical reaction is
31356. The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the
31357. A catalyst is said to be a negative catalyst, ifit
31358. For the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance.
31359. Pure ethanol vapor is fed to a reactor packed with alumina catalyst, at the rate of 100 kmole / hr. The reactor products comprise: ethylene :95 kmole / hr, water vapour: 97.5 k mole / hr and diethyl ether :2.5 kmole/hr. The reactions occuring can be represented by:C2H5OH C2H4 + H2O2C2H5OH C2H5 - O - C2H5 + H2OThe percent conversion of ethanol in the reactor is
31360. In the expansion of CORE banking,letter R stands for
31361. A backmix reactor
31362. Rate of a chemical reaction is not influenced by the
31363. Standard assets require a provision of
31364. The reaction A B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m3 is fed to the reactor at the rate of 0.01 m3 /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k)is (Data: Heat of reaction at 298 K = - 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature))
31365. Which of the following is not a theory of homogeneous reaction?
31366. A first order homogeneous reaction of the type X Y Z (consecutive reaction) is carried out in a CSTR. Which of the following curves respectively show the variation of the concentration of X, Y and Z with time?
31367. In a semi-batch reactor,
31368. Most important characteristics of gas-liquid reactors are the
31369. Which of the following is a controlling factor in very fast heterogeneous reaction ?
31370. Enzymes are destroyed, when the
31371. For an autocatalytic reactor, the suitable reactor set up is
31372. Ionic reactions occur in
31373. Sometimes, batch process is preferred over continuous process, when the product
31374. In a chemical reaction , it is observed that the (i) rate of formation of 'P' is doubled on doubling the concentration of 'X'. (ii) rate of formation of 'P' is quadrupled on doubling the concentration of 'Y'. (iii) doubling the concentration of 'Z' does not affect the rate of formation of 'P'. What is the order of the above chemical reaction?
31375. The half life period of a first order reaction is given by (where, K = rate constant. )
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use
Powered By:Omega Web Solutions