Bihar SBTE Diploma Chemical 5thSEM May 2019 Paper on CRE
| Sr. No. | Questions with options |
| 1 | Generation of heat by friction is an example of a/an ____ change
(a) Isothermal (b) Irreversible (c) Adiabatic (d) Reversible |
| 2 | Entropy of a substance remains constant during which change
(a) Reversible isothermal (b) Irreversible isothermal (c) Reversible adiabatic (d) None of these |
| 3 | Which of the following is affected by temperature
(a) Fugocity (b) Activity co-efficient (c) Free energy (d) All (a), (b) & (c) |
| 4 | The free energy change for a chemical reaction is given by
(a) RT (Ink) (b) –RT (Ink) (c) –R.(Ink) (d) T.(Ink) |
| 5 | Concentration of the limiting reactant (with initial concentration of ‘a’ mole/ liter) after time ‘t’ is (a-x). Then time for a 1st order reaction is given by
(a) K.t= In [a/(a-x)] (b) K.t= x [x/a(a-x)] (c) K.t = In[(a-x)/x] (d) K.t =[a.(a-x)/x] |
| 6 | 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 |
| 7 | Reaction with high activation energy is
(a) Very temp, sensitive (b) Temp, insensitive (c) Always irreversible (d) Always reversible |
| 8 | With increase in temperature the equilibrium conversion of a Reversible endothermic reaction
(a) Decreases (b) Increases (c) Increases unearly with temperature (d) Remains unaffected |
| 9 | A back-Mixes reactor
(a) Is same as P.F.R (b) Is same as ideal C.S.T.R (c) Employs mixing in axial direction only (d) Is most suitable for gas phase reaction |
| 10 | In a C.S.T.R 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 |
| 11 | For the same residence time which one will given the maximum conversion
(a) Single C.S.T.R (V=5 liters) (b) Two C.S.T.R (each of 2.5 liters) in series (c) C.S.T.R followed by P.F.R (each of 2.5 liters) (d) Single P.F.R (=5 liters) |
| 12 | Catalytic action in a catalytic chemical reaction follows team the ability of catalyst to change the
(a) Activation energy (b) Equilibrium constant (c) Heat of reaction (d) None of these |
| Data Collected By – Rashmi | |
| Published On – 20th June 2022 | |
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