Building Material

Q: Galvanising means covering iron with a thin coat of

(a) :  tin
(b) :  zinc
(c) :  glaze
(d) :  coal tar
(e) :  None of these.
Answer:  zinc
Explanation:  

Q: Bitumen in

(a) :  solid state, is called asphalt
(b) :  semi fluid state, is called mineral tar
(c) :  fluid state, is called petroleum
(d) :  all the above.
(e) :  None of these.
Answer:  all the above.
Explanation:  

Q: Resins are

(a) :  not soluble in water
(b) :  soluble in spirit
(c) :  used in varnishes
(d) :  left behind on evaporation of oil
(e) :  None of these.
Answer:  used in varnishes
Explanation:  

Q: Portland pozzolana cement possesses

(a) :  higher resistance to chemical attack
(b) :  lower heat of hydration
(c) :  lower shrinkage on drying
(d) :  all the above.
(e) :  None of these.
Answer:  all the above.
Explanation:  

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