A. Surface area of powdered marble is more that of chips of marble and hence there is more collisions between the molecules of reactants
B. Number of molecules increases.
C. Energy of activation decreases
D. Marble chips will not react with HCl
Answer: A
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A. Rate of formation of B = Rate of disappearance of A
B. Rate of formation of C= Rate of formation of B
C. Rate of disappearance of A = Rate of formation of C
D. Rate of disappearance of A = Rate of formation of B
Answer: C
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A. Kinetic energy
B. Threshold energy
C. Activation energy
D. Thermodynamic energy
Answer: C
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A. in summer, the temperature Is high due to which effective collisions increase and hence the rate of reaction becomes fast
B. in winter, number of molecules per unit volume increases and hence the rate of reaction becomes fast
C. in summer, the energy of activation decreases and hence the of reaction becomes fast
D. none of the above
Answer: A
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A. The reaction is first order with respect to bromine, Br2.
B. The reaction is second order overall.
C. The presence of hydrogen bromide, HBr, inhibits the rate of the reaction
D. It is not possible to determine anything about the kinetics of the reaction from the stoichiometry
Answer: D
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