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Common Chemical Industries in Pakistan - 4
1.
Portland cement contain
a) PbO
b) Sb
2
O
3
c) H
2
O
2
d) CaO
2.
CaCO
3
→Δ
a) Ca +CO+CO
2
b) CaO + CO
2
c) CaO+CO
d) Ca, + C + O
3
3.
It is not used in paper and pulp industry
a) Bamboo
b) Poplar
c) He gas
d) Cotton stalk
4.
As raw material enters in digester steam is passed from
a) Outside
b) Side
c) Bottom
d) Top
5.
Paper consumption in Pakistan per person per year is
a) 5Kg
b) 2.5Kg
c) 6Kg
d) 5.5Kg
6.
Wet sheets of paper so formed are dried in
a) Dryer section
b) Press Section
c) Flow spreader
d) Reel
7.
Urea
a) CaO
b) CaCO
3
c) NH
2
COONH
4
d) (NH
2
)
2
CO
8.
Ammonium Carbonate
a) NH
4
NO
3
b) NH
2
COONH
4
c) (NH
2
)
2
CO
d) CaCO
3
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