MCQ-46
In the given 2A+B → products. It is observed on quadrupling the concentration of B, the rate increases 16times. The order of reaction with respect to B is
A. 0
B. 1
C. -1
D. 2
Answer: D
MCQ-47
The rate of chemical reaction roughly doubles for every 10°C rise in temperature. If the temperature is raised by 20°C, the rate may increase
A. 4 times
B. 16 times
C. 8 times
D. 32 times
Answer: A
MCQ-48
Which of the followings is a pseudo-first-order reaction?
A. Acid-catalyzed hydrolysis of an ester
B. Hydrolysis of tertiary butyl bromide
C. Chloroform to Carbon tetrachloride
D. Both A and B
Answer: D
MCQ-49
In a reaction 2X + Y → M + N
If the concentration is of Y kept constant and that of X is tripled. The rate of reaction will
A. Increase 3 times
B. Increase 27 times
C. Increase 2 times
D. Increase 9 times
Answer: D
MCQ-50
2X+Y ⇌ Z
At equilibrium 0.20 mole of X, 0.45 mole of Y and 0.15 mole of Z are present, Calculate Kc
A. 8.3
B. 5.0
C. 4.0
D. 6.0
Answer: A
