E-PolyLearning

1. Rate of reaction can be calculated by dividing change in mass or volume by
a. time taken
b. total mass
c. amount of volume
d. the temperature
View Answer Report Discuss 50-50!
Answer: (a).time taken

2. Chemical substances speeding up rate of chemical reaction is called as
a. pressure
b. concentration
c. catalysts
d. inhibitors
View Answer Report Discuss 50-50!
Answer: (c).catalysts

3. Haber process for manufacturing of ammonia requires catalyst of
a. vanadium oxide
b. iron
c. platinum
d. nickel
View Answer Report Discuss 50-50!
Answer: (b).iron

4. Factors affecting speed of reaction include
a. volume of gas
b. change in mass
c. pressure
d. temperature change
View Answer Report Discuss 50-50!
Answer: (c).pressure

5. Milk turns sour due to
a. conversion of lactose in lactic acid
b. increased chemical changes
c. conversion of lactic acid into lactose
d. both a and b
View Answer Report Discuss 50-50!
Answer: (d).both a and b

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