A. Concentration of reactant
B. Suitable catalyst
C. Temperature
D. Concentration of product
# The rate of reaction depends upon:
A. Initial concentration of reactants
B. Temperature
C. Pressure
D. Volume
# The factor which does not influence the rate of reaction is:
A. Number of reactant
B. Concentration
C. Temperature
D. Molecularity
# 75 % of a first order reaction was completed in 32 minutes. When was 50 % of the reaction completed?
A. 24 min
B. 16 min
C. 8 min
D. 4 min
# A radioactive substance remains 1/8th of its original mass after 96 days. What is the half-life period of the radioactive substance?
A. 16
B. 44
C. 32
D. 40
# The rate constant of a zero order reaction is 'K' and the initial concentration is 'a', the half life of the reaction will be:
A. 1/aK
B. K/2
C. aK/2
D. a/2K
# The order of a reaction is :
A. Sum of stoichiometric coefficients of all reactants
B. Sum of Stoichiometric coefficient of the reactants on which the rate depends
C. Sum of power of concentration of the reactant on which the rate depends
D. Sum of power of concentration of all reactants
# The half life of a reaction is 20 min. The reaction will be completed after:
A. 20 min
B. 40 min
C. 40 hrs
D. Infinite time
# When the concentration of both the reactants A and B is doubled, then its rate constant is 8 but when the concentration of only B is doubled, then the rate constant is 2. Then find the order of reaction.
A. First
B. Second
C. Third
D. Fourth
# The average minimum energy that must be associated with the reactant molecules in order to be capable of forming products:
A. Activation Energy
B. Collision Energy
C. Threshold energy
D. Transition energy
# A lump of coal burns slowly while dust of coal burns explosively. This is because of:
A. A high mass of lump of coal
B. Lower ignition temperature of coal dust
C. Higher ignition temperature of coal dust
D. Larger surface area of coal dust
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