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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 24
6.
Upto the critical radius of insulation, added insulation, will
increase the heat loss.
decrease heat loss and will have no effect beyond that.
decrease heat flux.
reduce convection heat loss compared to conduction heat less.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Limestone is added in the blast furnace (during pig iron manufacture) to
form slag by combining with impurities.
supply heat by undergoing exothermic reaction with impurities.
reduce the coke consumption.
reduce slag viscosity.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Cementite is in the lamellar form in the __________ phase of steel.
martensitic
bainitic
pearlitic
ferritic
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
To improve the machinability of steel, it is generally subjected to
spherodising
tempering
normalising
annealing
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Silicon in steel
makes it usable in almost all magnetic circuits where alternating current is used.
increases its electrical resistivity and decreases the hysteresis loss.
is present upto 5% & 4% respectively when used in transformers & motor armatures.
all 'a', 'b' & 'c'.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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