Chemical Engineering Basics MCQs

Question 1

A material being tested for endurance strength is subjected to the __________ load.

Accepted Answer

Completely reversed

Answer

Impact

Answer

Dynamic

Answer

Static & dynamic

Question 2

As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint.

Accepted Answer

Lap

Answer

Butt

Answer

Welded

Answer

None of these

Question 3

Killed steels

Accepted Answer

Are free from oxygen

Answer

Contain not even traces of sulphur & phosphorous

Answer

Are produced by L.D. process only

Answer

Contain minimum impurity level

Question 4

Hot working of lead is carried out at

Accepted Answer

373°K

Answer

75°C

Answer

150°C

Answer

Room temperature

Question 5

Pick out the wrong statement.

Accepted Answer

Crushing load or columns is less than the buckling load

Answer

The equivalent stiffness of two springs (of equal stiffness 'S') in series is $$\frac{{	ext{S}}}{2}$$ while in parallel is 2S

Answer

For a helical spring, deflection is proportional to D3 (D = mean coil diameter) or d4 (d = wire diameter)

Answer

Modulus of resilience is proportional to (stress at elastic limit)2

Question 6

Boiler tube size is specified by its thickness and __________ diameter.

Accepted Answer

Outside

Answer

Inside

Answer

Mean

Answer

None of these

Question 7

Break even point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost

Accepted Answer

Plus variable cost

Answer

Only

Answer

Plus overhead cost

Answer

Plus selling expenses

Question 8

Direct conversion of thermal energy to electrical energy is facilitated by the

Accepted Answer

Magneto hydrodynamic generator

Answer

Fuel cells

Answer

Photo voltaic cell

Answer

None of these

Question 9

Which of the following approaches the ideal gas behaviour most closely?

Accepted Answer

Superheated steam

Answer

Wet steam

Answer

Saturated steam

Answer

Saturated water