Chemical Reaction

A. Time for half change is half the time taken for completion of the reaction
B. Time for half change is independent of the initial concentration
C. Time for completion of the reaction is independent of the initial concentration
D. Reaction rate is trebled when the initial concentration is trebled

A. More
B. Less
C. Same
D. Either A. or B., depends on other factors

A. Linearly
B. Exponentially
C. Parabolically
D. Logarithmically

A. Langmuir’s assumption applies to every adsorbed layer
B. There is no dynamic equilibrium between successive layer
C. The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer
(except the first one) is involved in each of the evaporation process
D. None of these

A. Sulphur dioxide oxidation
B. Ethylene oxidation
C. Benzene oxidation
D. Ammonia synthesis

A. Equal in size
B. Of different sizes
C. Of such size that the ratio of their volumes is < 5
D. None of these

A. Gas film
B. Ash
C. Chemical reaction
D. None of these

A. 0
B. 1
C. 2
D. 3

A. Initiated by
B. Accompanied with emission of
C. Catalysed by
D. Used to convert heat energy into

A. Protons
B. Neutrons
C. Electrons
D. None of these