Chemical Engineering Gate Yearwise 


Chemical Engineering Gate 2010 Questions with Answer

Ques 27 GATE 2010

A storage vessel exposed to atmosphere (absolute pressure =10.3 m of water) has a diameter of 3 m and is initially filled with water to a height of 2 m. The pump draws water from the vessel and is located at an elevation of 5 m above the bottom of the vessel. The frictional head loss in the suction pipe is 2 m of water. If the vapour pressure of the liquid at the temperature of operation is 3 m of water. then the available NPSH is

A

2.3 m

B

5.3 m

C

6.3 m

D

8.3 m


(a) is the correct answer.

Ques 28 GATE 2010

In Hagen-Poiseuille flow through a cylindrical tube, the radial profile of shear stress is

A

constant

B

cubic

C

parabolic

D

linear


(d) is the correct answer.

Ques 29 GATE 2010

A hydrometer, with stem cross-sectional area of 2.82×10-9 m2. is immersed in a very large vessel containing water as shown in the figure. The immersed volume is 15×10-6 m3 and the length of the stem above water surface is Lw. If the entire volume of water is replaced by a liquid with specific gravity 1.5 and if the length of the stem above the liquid surface is Ll, then the difference, Ll-Lw

A

-177 mm

B

177 mm

C

-266 mm

D

266 mm


(d) is the correct answer.

Ques 30 GATE 2010

The diameter of a drop of liquid fuel changes with time, due to combustion, according to the relationship. D=D0(1-t/tb). While burning, the drop falls at its terminal velocity under Stokes flow regime. The distance it will travel before complete combustion, is given by

A

(D02Δρtbg)/(18μ)

B

(D02Δρtbg)/(36μ)

C

(D02Δρtbg)/(54μ)

D

(D02Δρtbg)/(108μ)


(a) is the correct answer.

Ques 31 GATE 2010

Consider the process as shown below:

A constant head pump transfers a liquid from a tank maintained at 20 psi to a reactor operating at 100 psi, through a heat exchanger and a control valve. At the design conditions, the liquid flow rate is 1000 litres/min. while the pressure drop across the heat exchanger is 40 psi, and that across the control valve is 20 psi. Assume that the pressure drop across the heat exchanger varies as the square of the flow rate. If the flow is reduced to 500 litres/min, then the pressure drop across the control valve is

A

30 psi

B

50 psi

C

80 psi

D

150 psi


(b) is the correct answer.

Ques 32 GATE 2010

Choose the most appropriate word from the options given below to complete the following sentence:
His rather casual remarks on politics _______ his lack of seriousness about the subject.

A

masked

B

belied

C

betrayed

D

suppressed


(b) is the correct answer.

Ques 33 GATE 2010

Which of the following options is the closest in meaning to the word below:
Circuitous

A

cyclic

B

indirect

C

confusing

D

crooked


(b) is the correct answer.

Ques 34 GATE 2010

Choose the most appropriate word from the options given below to complete the following sentence:
If we manage to _______ our natural resources, we would leave a better planet for our children.

A

uphold

B

restrain

C

cherish

D

conserve


(d) is the correct answer.

Ques 35 GATE 2010

25 persons are in a room. 15 of them play hockey, 17 of them play football and 10 of them play both hockey and football. Then the number of persons playing neither hockey nor football is:

A

2

B

17

C

13

D

3


(d) is the correct answer.

Ques 36 GATE 2010

The question below consists of a pair of related words followed by four pairs of words. Select the pair that best expresses the relation in the original pair.
Unemployed: Worker

A

fallow: land

B

unaware: sleeper

C

wit: jester

D

renovated: house


(a) is the correct answer.

Ques 37 GATE 2010

IF 137+276=435 how much is 731+672?

A

534

B

1403

C

1623

D

1513


(d) is the correct answer.

Ques 38 GATE 2010

Hari (H). Gita (G). Irfan (I) and Saira (S) are siblings (i.e. brothers and sisters). All were born on 1st January. The age difference between any two successive siblings (that is born one after another) is less than 3 years. Given the following facts:
1. Hari's age + Gita's age > Irlan's age + Saira's age.
ii. The age difference between Gita and Saira is 1 year. However, Gita is not the oldest and Saira is not the youngest.
iii. There are no twins.
In what order were they born (oldest first)?

A

HSIG

B

SGHI

C

IGSH

D

IHSG


(b) is the correct answer.

Ques 39 GATE 2010

Modern warfare has changed from large scale clashes of armies to suppression of civilian populations. Chemical agents that do their work silently appear to be suited to such warfare; and regretfully, there exist people in military establishunents who think that chemical agents are useful tools for their cause. Which of the following statements best sums up the meaning of the above passage:

A

Modern warfare has resulted in civil strife.

B

Chemical agents are useful in modern warfare.

C

Use of chemical agents in warfare would be undesirable.

D

People in military establishments like to use chemical agents in war.


(c) is the correct answer.

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