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Quiz 1
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Q.1
Poor lime contains more than ________ of clay.
a) 5%
b) 10%
c) 20%
d) 30%
Q.2
Fat lime slakes slowly while hydraulic lime slakes vigorously.
a) True
b) False
Q.3
Percentage of impurities in limestones should not exceed ________ for preparing fat lime.
a) 5%
b) 8%
c) 10%
d) 15%
Q.4
Clay content in feebly hydraulic lime is about ________
a) 2-4%
b) 5-10%
c) 11-20%
d) 21-30%
Q.5
Which of the following is not true about hydraulic lime?
a) Hydraulic lime consists of clay and some amount of ferrous oxide
b) Hydraulic lime can set under water
c) It has a perfectly white colour
d) It is also known as water lime
Q.6
Pure limestones are indicated by _________ colour.
a) Brown
b) Blue
c) Grey
d) White
Q.7
Time taken by hydraulic lime to slake is about __________
a) 3-4 hours
b) 7-10 hours
c) 12-48 hours
d) 60-65 hours
Q.8
Which of the following statements about kankar is false?
a) It is used to manufacture natural hydraulic lime
b) It is available in nodular and block form
c) Kankar in nodular form can withstand heat without disintegration
d) It is a pure limestone
Q.9
Which of the following is not true about clamp burning?
a) It is adopted for manufacturing lime on a small scale
b) Best quality of lime is produced by this process
c) It is uneconomical to manufacture lime by this process on a large scale
d) Quantity of fuel required in this process is more
Q.10
Hydraulic lime resembles natural cement with about __________ of clay.
a) 15%
b) 20%
c) 30%
d) 60%
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