Previous Question Papers Of Hindustan Paper Corporation Limited

Hii sir, I Wants to get the Placement Paper for the Chemical Engineering of the Of Hindustan Paper Corporation Limited ?

About the Company : HPC is an extended arm of the Union Government to intensify the movement for literacy through the growth of the paper industry. Today it is one of the largest manufacturers of paper and newsprint in South East Asia. Simultaneously, HPC has been playing a dominant role in the socio-economic development of the North-East region.

The Placement Paper for the Chemical Engineering of the Of Hindustan Paper Corporation Limited is given below


1. Dilute sulfuric acid is handled in vessels made of: (GATE-1989-9.i.a)
(a) Stainless steel
(b) Brass
(c) Lead
(d) Cast iron
Ans:c

2 ACSR (Aluminium Conductor Steel Reinforced) are used as
(A) over head transmission lines.
(B) super conductors.
(C) fuse
(D) underground cables.
Ans: A

2. At steady state, the temperature variation in a plane wall, made of two different solids
I and II is shown below:

figure

Then, the thermal conductivity of material I
(a) is smaller than that of II
(b) is greater than that of II
(c) is equal to that of II
(d) can be greater than or smaller than that of II
Ans:A

3.Brass is an alloy of
(A) copper and zinc.
(B) copper and iron.
(C) copper and Aluminum.
(D) copper and tin.
Ans: A

4. A gaseous reaction A ! 2B+C takes place isothermally in a constant pressure reactor. Starting with a gaseous mixture containing 50% A (rest inerts), the ratio of final to initial volume is found to be 1.6. The percentage conversion of A is (GATE-1992-2.c)
(a) 30
(b) 50
(c) 60
(d) 74
Ans:C

5.Property of material which allows it to be drawn out into wires is
(A) Ductility.
(B) Solder ability.
(C) Super conductivity.
(D) Malleability.
Ans: A

6.In n type semi conductor added impurity is
(A) pentavalent.
(B) divalent.
(C) tetravalent.
(D) trivalent.
Ans: A

7.Air enters an adiabatic compressor at 300 K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas ( = CP /CV = 7/5) and the process to be reversible, is
(A) 300(3 2/7)
(B) 300(3 3/5)
(C) 300(3 3/7)
(D) 300(3 5/7)
Answer: (a) For reversible adiabatic process PV = constant.

8.Phenol and Formaldehyde are polymerised to a resultant product known as
(A) PVC.
(B) bakelite.
(C) polyester.
(D) teflon.
Ans: B

9.The percentage of carbon in mild steel is
(A) 0.08 to 0.3 %
(B) 0.5 to 1.4 %
(D) 2.35 %
(D) 0.5 %
Ans: A

10. A rotameter, through which air at room temperature and atmospheric pressure is flowing, gives a certain reading for a flow rate of 100 cc/s. If helium (Molecular weight 4) is used and the rotameter shows the same reading, the flow rate is (GATE-1996-2.02)
(A) 26 cc/s
(B) 42 cc/s
(C) 269 cc/s
(D) 325 cc/s
Answer: (C)

11.Crystal size in a continuous crystalliser depends upon the
A. rate of heat transfer.
B. degree of turbulence.
C. degree of supersaturation.
D. all (a), (b) and (c).
Ans

12.When vaporisation takes place directly at the heating surface, it is called
A. film boiling
B. nucleate boiling
C. vapour binding
D. none of these
Ans:B

13.Fourier's law applies to the heat transfer by
A. convection
B. radiation
C. conduction
D. all (a), (b) & (c)
Ans:C

14.Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone.
A.laminar
B.transition
C.both 'a' & 'b'
D. highly turbulent
Ans

15.In a solution containing 0.30 Kg mole of solute and 600 kg of solvent, the molality is
A. 0.50
B. 0.60
C. 2
D. 1
Ans:A

16.In batch distillation with constant reflux, overhead product composition __________ with time.
A.increases
B.decreases
C.does not vary
D.may increase on decrease, depends on the system
Ans:B

17.Which of the following plays an important role in problems of simultaneous heat and mass transfer ?
A. Lewis number
B. Schmidt number
C.Prandtl number
D.Sherwood number

18.Which of the following process sequences is correct for melt blown process?

A)preparation, extrusion, quenching, attenuation, lay-down, winding.
B)preparation, extrusion, drawing, attenuation, lay-down, winding.
C)preparation, extrusion, quenching, lay-down, attenuation, winding.
D)preparation, quenching, extrusion, attenuation, lay-down, winding

19.Which of the following bonding methods is generally following in spunbond process?

A)Needlepunching
B)Thermal calendar bonding
C)Chemical bonding
D)Hydroentanglement

20. Which of the following polymers is least likely to be optically transparent
A. Atactic polystyrene
B. Isotactic polystyrene
C. An ethylene/propylene random copolymer (50/50 composition)
D. A styrene/butadiene random copolymer

21.Styrene is almost a unique monomer, in that it can be polymerized by practically all methods
of chain polymerization.
A. Free radical
B. Anionic
C. Cationic
D. Co-ordination (i.e., with a catalyst)

22.What method would you use to synthesize a triblock copolymer?
A) Free radical polymerization
B) Anionic polymerization
C) Using a Ziegler Natta catalyst
D) By putting it into a bloody great pot and spitting on it to initiate polymerization
E) Condensation polymerization

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