Thursday, May 6, 2010

Rate and order of reaction

Multiple Choice Questions (MCQs) of Rate and Order of Reaction from Pharmaceutics

1. When hydrochloric acid reacts with calcium carbonate carbon dioxide is formed.which of the following method not be suitable for measuring the rate of reaction.

a. measuring the mass lost using a balance
b. Measuring the volume of gas using a gas syringe
c. Measuring the time it takes for a cross to disappear
d. Measuring the volume of gas using an inverted measuring cylinder full of water
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2. What Effect does doubling the concentration of a reactant have on the rate of a reaction

a. Reaction rate decreases
b. Reaction rate increase
c. No effect on reaction rate
d. Reaction rate halves
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3. In a reaction between two gasses which of the following will not effect the rate

a. The presence of a catalyst
b. Temperature
c. Pressure
d. Volume
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4. If we increase the concentration of a reactant what happen to the collisions between articles

a. There are  fewer collisions
b. There are more collisions
c. There are the same number of collision but have less energy
d. There are the same number of collision but they have more energy
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5. Why does the rate of reaction increases when powdered calcium carbonate is used instead of lumps of marble

a. There is increase in concentration
b. There is an increase in temperature
c. There is an increase in surface area
d. Powdered calcium carbonate is a catalyst
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Answers to Multiple Choice Questions (MCQs) of Rate and Order of Reaction from Pharmaceutics

1. c
2. b
3. d
4. b
5. c

(These MCQs are helpful for the preparation of Pharmacy Exams)
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