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Civil Engineering - Building Materials

Exercise : Building Materials - Section 4
41.
Cast iron
is obtained by purifying pig iron
is manufactured in required shapes
may contain 2 to 5 per cent of carbon with other impurities
is remelted in a cupola furnace
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Asbestos is
corrugated sheet used for roofing
an incombustible fire proof material
an organic substance
a bad insulator for sound and heat
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
In a rock calcium carbonate predominates. State whether it is :
Sillicious rock
Argillaceous rock
Calcareous rock
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
In order of increasing percentage of silica, the correct sequence is
sandy clay, calcareous clay, pure clay
calcareous clay, pure clay, sandy clay
pure clay, sandy clay, calcareous clay
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
The rocks which are formed due to pouring of magma at the earth's surface are called
Plutonic rocks
Hypabyssal rocks
Volcanic rocks
Igneous rocks
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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