- (A) rA = rB
- (B) rA = -rB
- (C) rA = 2rB
- (D) rA = rB/2
Exam preparation MCQs with answers
Practice Pakistan's most useful MCQs for competitive exams
Prepare for NTS, PPSC, FPSC and subject-wise tests with fresh multiple choice questions, clear options and quick answer reveal.
Latest MCQs
- (A) ln (k2/k1) = (E/R) (1/T2 – 1/T1)
- (B) ln (k2/k1) = (E/R) (1/T1 – 1/T2)
- (C) exp (k2/k1) = (E/R) (1/T2 – 1/T1)
- (D) exp (k2/k1) = (E/R) (1/T1 – 1/T2)
- (A) Greater than
- (B) Equal to
- (C) Smaller than
- (D) Unpredictable from the data
- (A) Low temperature in a CSTR
- (B) High temperature in a CSTR
- (C) Low temperature in a PFR
- (D) High temperature in a PFR
- (A) Active at cryogenic temperatures only
- (B) Prohibitively costly
- (C) Proteinous in nature
- (D) Active at very high temperature only
- (A) Whole surface of the catalyst does not have the same activity for adsorption and there is attraction between the adsorbed molecule
- (B) Whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect on the rate of adsorption per site
- (C) All the adsorption does not take place by the same mechanism
- (D) Extent of adsorption is more than one complete monomolecular layer on the surface
- (A) Parallel
- (B) Series
- (C) Series-parallel
- (D) None of these
- (A) I, II, III
- (B) III, II, I
- (C) III, I, II
- (D) II, III, I
- (A) Fixed bed reactor
- (B) Fluidised bed reactor
- (C) Semi-fluidised bed reactor
- (D) Plug-flow catalytic reactor
- (A) CA (K1 + K2)
- (B) CA (K1 + K2)/2
- (C) CA . K1/2
- (D) CA . K2/2
