Process Equipment & Plant Design Mcqs for Chemical

MCQ: What is the value of ‘q’ for saturated vapor feed to a distillation column? (where q = fraction of the feed stream that is liquid ?

1. 0
2. 1
3. <0
4. > 1

MCQ: Large process vessels operating under extreme temperature and pressure conditions are normally clad/ lined with materials like stainless steel, aluminium, nickel & its alloys, copper & its alloys and titanium. The cladding thickness is generally about ______________ percent of the total thickness?

1. 1 to 5
2. 10 to 20
3. 30 to 40
4. 40 to 50

MCQ: Pick out the wrong statement pertaining to the design of a horizontal tube evaporator ?

1. It is unsuitable for concentrating those liquids, which form a scale or deposit salt
2. It is suitable for process, in which the final product is a liquor instead of solid
3. Its usual dimensions are: tube dia = 2-3 cms; evaporator body dia = 1-4 metres and evaporator height = 2.5-4 metres
4. Liquor flows inside the tube, while the steam is outside submerging the tube

MCQ: In a distillation column, bubble caps are located on trays with a pitch of ______________ times the outside diameter of the caps?

1. 1.3 to 2
2. 1.6 to 2
3. 2.5
4. 1.5 to 3

MCQ: ______________ closure is the weakest enclosure for cylindrical vessels?

1. Hemispherical
2. Torispherical
3. Conical or flat plate
4. Elliptical

MCQ: High pressure fluid in a shell and tube heat exchanger should preferably be routed through the________________?

1. Tubes to avoid the expansion of high pressure shell construction
2. Shell side for smaller total pressure drop
3. Shell side, if the flow is counter-current and tube side if the flow is co-current
4. Shell side for large overall heat transfer co-efficient

MCQ: What is the slope of the feed line, if the feed to a distillation column is a saturated liquid ?

1. 0
2. ∞
3. > 1
4. < 1

MCQ: ___________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids?

1. Sieve plate
2. Packed
3. Bubble cap plate
4. None of these

MCQ: For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for dia of the tank in question), the thickness of the courses of shell_________________?

1. Decreases upwards
2. Increases upwards
3. Remains same throughout
4. May decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell

MCQ: Pick out the wrong statement?

1. If sufficient residence time (around 8 seconds) is not provided to the downcoming liquid in the downcomer, it may entrain some vapour
2. The liquid head in the downcomer should not be greater than one half the plate spacing to avoid flooding
3. The discharge end of the downcomer must project far enough into the tray liquid so that no gas bubbles can enter the open end and by pass the bubble c
4. None of these