Kaoline is a/an
Question: Kaoline is a/an
[A].
refractory material
synthetic resin
artificial abrasive
blue pigment
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
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A coal with high ash content is undesirable, as
Question: A coal with high ash content is undesirable, as
[A].it is abrasive to the coal pulveriser (ie.g. ball mill) and the combustion chamber. [B].
the ash in molten condition gets absorbed in the pores of the refractory lining of the furnace and causes its spalling due to different co-efficient of expansion/contraction of the refractory and the ash. [C].
the ash retains the sulphur & phosphorus and thus affects the quality of products in metallurgical furnace apart from increasing the slag volume. Besides, it may fuse and stick to the boiler tubes thereby reducing the heat transfer. [D].
all (a), (b) and (c). Answer: Option D
Explanation:
No answer description available for this question.
In a vapor-liquid contacting equipment, the overall gas phase mass transfer co-efficient (M.T.C), KG is related to individual co-efficients (KG and KL) as
Question: In a vapor-liquid contacting equipment, the overall gas phase mass transfer co-efficient (M.T.C), KG is related to individual co-efficients (KG and KL) as
[A].[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Number of phases in a colloidal system are
Question: Number of phases in a colloidal system are
[A].1 [B].
2 [C].
3 [D].
4 Answer: Option B
Explanation:
No answer description available for this question.
Natural draft created by the chimney depends upon
Question: Natural draft created by the chimney depends upon
[A].temperature of the flue gas. [B].
its height. [C].
both (a) & (b). [D].
neither (a) nor (b). Answer: Option C
Explanation:
No answer description available for this question.
Brine (15% concentration) can be stored in a vessel made of
Question: Brine (15% concentration) can be stored in a vessel made of
[A].monel [B].
karbate [C].
cast iron [D].
none of these Answer: Option A
Explanation:
No answer description available for this question.
Which of the following is used as a coagulant in water treatment ?
Which of the following is used as a coagulant in water treatment ?A. Chloramine
B. Chlorine
C. Ferrous sulphate
D. Hydrogen peroxide