Building Material

Q: The rocks which are formed due to cooling of magma at a considerable depth from earth's surface are called

(a) :  Plutonic rocks
(b) :  Hypabyssal rocks
(c) :  Volcanic rocks
(d) :  Igneous rocks.
(e) :  None of these.
Answer:  Plutonic rocks
Explanation:  

Q: A good quality stone absorbs water less than

(a) :  0.05
(b) :  0.1
(c) :  0.2
(d) :  0.3
(e) :  None of these.
Answer:  0.05
Explanation:  

Q: The standard size of masonry bricks, is

(a) :  18 cm x 8 cm x 8 cm
(b) :  19 cm x 9 cm x 9 cm
(c) :  20 cm x 10 cm x 10 cm
(d) :  21 cm x 11 cm x 11 cm
(e) :  None of these.
Answer:  19 cm x 9 cm x 9 cm
Explanation:  

Q: The initial setting time of lime-pozzolona, is

(a) :  30 minutes
(b) :  60 minutes
(c) :  90 minutes
(d) :  120 minutes
(e) :  None of these.
Answer:  120 minutes
Explanation:  

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