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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 27
1.
Titanium is added to molten aluminium alloys before casting for the purpose of
grain refinement.
increasing corrosion resistance.
reducing porosity.
improving fluidity.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
Cemented carbide tools are not suitable for cutting
aluminium
brass
cast iron
steel
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
The difference between gross & net calorific values of fuel is due to the
sensible heat carried away by the flue gases.
heat carried away by the steam from the moisture content of the fuel.
heat lost by radiation.
heat carried away by steam from the combustion of hydrogen in the fuel.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Which of the following is preferred for rivetting ?
Lap joint
Butt joint
Either (a) or (b)
Neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Heating the hypoeutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called
tempering
hardening
annealing
normalising
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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