Concrete Technology (3150610) MCQs

MCQs of Unit 1 : Ingredients of Concrete : Cement

Showing 1 to 10 out of 18 Questions
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1.

the maximum % of chemical ingredient of cement if that of...

(a)

aluminia 
(b)

silica 
(c)

gypsum 
(d)

lime 
Answer:

Option (d)

2.

efflorescence in cement is caused due to an excess of 

(a)

alumina
(b)

iron oxide 
(c)

alkalis
(d)

silica
Answer:

Option (c)

3.

setting time of cement increases by adding 

(a)

gypsum
(b)

calcium chloride
(c)

hydrogen peroxide
(d)

sodium oxide
Answer:

Option (a)

4.

setting time of cement decrease by reducing 

(a)

gypsum
(b)

calcium chloride
(c)

hydrogen peroxide
(d)

sodium oxide
Answer:

Option (a)

5.
In cement, the Percentage of lime content in the range of
(a) 60-62
(b) 60-65
(c) 60-67
(d) 60-69
Answer:

Option (c)

6.
The role of Silica in cement is
(a) reduce setting time
(b) reduce strength
(c) increase strength
(d) non of above
Answer:

Option (c)

7.
The role of Iron oxide in cement is
(a) to increase the strength
(b) to increase the setting time
(c) to decrease the setting time
(d) all of above
Answer:

Option (a)

8.
Excess magnesia makes the cement
(a) sound
(b) unsound
(c) hardened
(d) all of above
Answer:

Option (b)

9.
Gypsum is added at the time of
(a) before burning
(b) during burning
(c) during grinding
(d) in all stages
Answer:

Option (c)

10.
The identification of major compounds in cement is largely based on the work of
(a) R. J. Bouge
(b) J. R. Bouge
(c) R. H. Bouge
(d) H. R. Bouge
Answer:

Option (c)

Showing 1 to 10 out of 18 Questions
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