Chemical Engineering - Chemical Engineering Basics

26.
Notched bar test is used for testing the __________ of a material.
impact strength
endurance limit
machinability
corrosion resistance
Answer: Option
Explanation:
No answer description is available. Let's discuss.

27.
The most suitable material for die casting is
iron
copper
steel
nickel
Answer: Option
Explanation:
No answer description is available. Let's discuss.

28.
Heating of an ore below its melting point in presence of excess of air is called
calcination
smelting
roasting
sublimation
Answer: Option
Explanation:
No answer description is available. Let's discuss.

29.
Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is calculated by the __________ method.
diminishing balance
sinking fund
multiple straight line
sum of the years digit
Answer: Option
Explanation:
No answer description is available. Let's discuss.

30.
A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalant bonds resulting in __________ electrons.
lack of free
excess of
decrease in
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.