Civil Engineering - Building Materials

6. 

If the ore impurities is

A. clay, lime stone is used as flux
B. lime stone, clay is used as flux
C. quartz, lime stone and argallaceous iron ores are used as flux
D. All the above.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

7. 

The plastics prepared from Vinyl resin are

A. odourless
B. non-toxic
C. transparent
D. colourless
E. all of these.

Answer: Option E

Explanation:

No answer description available for this question. Let us discuss.

8. 

Chlorite, a green colour mineral is mainly derived from the decomposition of

A. augite
B. biotite
C. horn blende
D. All of these.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

9. 

During smelting process, the combination of fuel in the furnace

A. forms carbon dioxide
B. carbon dioxide with carbon forms carbon mono-oxide
C. carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2
D. all the above.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

10. 

Lime stones are generally known as

A. aqueous rocks
B. sedimentary rocks
C. stratified rocks
D. all the above.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.