Q.1
When following system is disturbed by addition of catalyst to the system container how does concentration of O2 change?2SO2(g) + O2(g) ↔ 2SO3(g) ΔH= +9kj/mol
  • Increase
  • Deacrease
  • No change
Q.2
What is the energy needed for reactant particles to change into products?
  • Potential
  • Kinetic
  • Activation
  • Conversion
Q.3
When following system is disturbed by addition of inert gas to the system container how does concentration of SO3 change?2SO2(g) + O2(g) ↔ 2SO3(g) ΔH= +9kj/mol
  • Increase
  • Deacrease
  • No change
Q.4
When following system is disturbed by increasing volume of system container how does concentration of SO2 change?2SO2(g) + O2(g) ↔ 2SO3(g) ΔH= +9kj/mol
  • Increase
  • Deacrease
  • No change
Q.5
A reaction is found to be second order with respect to carbon monoxide. If the concentration of carbon monoxide is doubled, the rate of reaction __________.
  • doubles
  • remains unchanged
  • increases by a factor of 4
  • is reduced by a factor of 2
Q.6
What is explaining behaviors of a system at equilibrium?
  • Avagadro's Law
  • Boyles Law
  • Le Chatelier Principle
  • Collusion Theory
Q.7
Limestone chunks are reaction with hydrochloric acid solution at constant temperature with average speed. If we crash the chunks of limestone into powder how would speed of reaction change?
  • Reaction speeds up
  • Reaction does not change
  • Reaction slows down
  • Reaction stops
Q.8
To measure rate of reaction, either decreasing mass of solid reactant or increasing volume of gaseous products are used. Which of the following reactions uses increasing volume of gaseous product method to measure the its rate?
  • Reaction between iron metal and air
  • Reaction between sodium hydroxide and nitric acid
  • Reaction between  table salt and water
  • Reaction between hydrochloric acid and aluminum metal
Q.9
Which of the followings is not the dynamic chemical equilibrium?
  • H2(g) + l2(g) ↔ 2HI(g)
  • H2O(s) ↔ H2O(l)
  • N2O4(g) ↔ 2NO2(g)
  • N2(g) + 3H2(g) ↔ 2NH3(g)
Q.10
What is the parameter to measure the rate or speed of a reaction beside time?
  • Change in volume
  • Change in consentration
  • Change in pressure
  • Change in temperature
Q.11
What is the difference between integrated method and differential method
  • number of order
  • Raw data at y axis
  • Raw data at x axis
  • Non of the above
Q.12
To measure rate of reaction, we can monitor change in which of the following?
  • Reactants only
  • Products only
  • Reactants or products
Q.13
For second order reaction, the initial concentration of reactant A is 0.M. If the rate constant is 8.1 x 10-2 M-1 s-what is the concentration of A afterseconds?
  • 0.02 M
  • 0.15 M
  • 0.30 M
  • 0.45 M
Q.14
The first order rate constant for the decomposition of 0.5 M compound A at 100oC is 0.min-Calculate the half-life of A.
  • 1.5 min
  • 8.3 min
  • 23.1 min
  • 66.7 min
Q.15
What does [ ] denote?
  • concentration, M
  • concentration, m
  • concentration, mass %
  • squared
Q.16
Reaction rate means...
  • amount of product formed
  • speed of reaction
  • concentration of reacting particles
  • combining reactants with products
Q.17
Decreasing the particle size increases the reaction rate because
  • It makes particles move faster
  • It increases the likelihood of collisions with the correct geometry
  • It decreases the surface area available to react
  • It increases the number of collisions
Q.18
Identify the order from the following rate constant : k =9.3×10-L mol-1s-1
  • second order
  • first order
  • zero order
  • third order
Q.19
The time taken forcompletion of a first order reaction ismins .Then forcompletion ,the reaction will take
  • 50 mins
  • 30 mins
  • 40 mins
  • 60 mins
Q.20
A first order reaction iscompleted in 1.26×s .How much time would it take forcompletion ?
  • 1.26×1015 s
  • 2.52×1014 s
  • 2.52×1028 s
  • infinite
0 h : 0 m : 1 s