Chemical Reaction Engineering - Study Mode

Show All Answers

[#291] Half life period of decomposition of a liquid 'A' by irreversible first order reaction is 12 minutes. The time required for 75% conversion of 'A' is __________ minutes.

(A) 18

(B) 24

(C) 6

(D) 12

Correct Answer

(B) 24

[#292] What is the value of 'n' if the reaction rate of the chemical reaction A → B, is proportional to C A n and it is found that the reaction rate triples, when the concentration of 'A' is increased 9 times?

(A) $$frac{1}{2}$$

(B) $$frac{1}{3}$$

(C) $$frac{1}{9}$$

(D) 3

Correct Answer

(A) $$frac{1}{2}$$

[#293] There is no correspondence between stoichiometry and the rate equation in case of a/an __________ reaction.

(A) Elementary

(B) Multiple

(C) Autocatalytic

(D) Non-elementary

Correct Answer

(D) Non-elementary

[#294] For a zero order reaction, the concentration of product increases with the

(A) Increase of reaction time

(B) Increase in initial concentration

(C) Total pressure

(D) Decrease in total pressure

Correct Answer

(A) Increase of reaction time

[#295] The conversion for a first order liquid phase reaction. A → B in a CSTR is 50%. If another CSTR of the same volume is connected in series, then the % conversion at the exit of the second reactor will be

(A) 60

(B) 75

(C) 90

(D) 100

Correct Answer

(B) 75