Inorganic Chemicals and Fertilizers - Chemical Technology - Chemical Engineering Previous Year Questions

1

2009 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2009

Match the product in Group I to the raw material in Group II.

A

P-1, Q-2, R-3

B

P-2, Q-1, R-4

C

P-3, Q-1, R-4

D

P-3, Q-2, R-4

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2

2009 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2009

Match the unit process in Group I with the industry in Group II.

A

P-1, Q-2, R-3

B

P-2, Q-3, R-3

C

P-1, Q-2, R-4

D

P-2, Q-1, R-3

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3

2010 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2010

In the manufacture of caustic soda from brine, which ONE of the following statements is TRUE?

A

The membrane cell CANNOT produce concentrated NaOH solution, and CANNOT tolerate calcium and magnesium ions in the feed brine.

B

The membrane cell CANNOT produce concentrated NaOH solution, but CAN tolerate calcium and magnesium ions in the feed brine.

C

The membrane cell CAN produce concentrated NaOH solution, but CANNOT tolerate calcium and magnesium ions in the feed brine.

D

The membrane cell CAN produce concentrated NaOH solution, and CAN tolerate calcium and magnesium ions in the feed brine.

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4

2010 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2010

For making superphosphate by acidulation of phosphate rock, use of nitric acid is desirable, because

A

nitric acid is less expensive than sulphuric acid

B

the availability of nitrogen enhances the value of the superphosphate as a fertilizer

C

the process produces non-hygroscopic superphosphate

D

the process produces superphosphate having higher phosphorus content than the sulphuric acid process

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5

2010 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2010

Match the processes in Group I with the products in Group II.
GROUP I
P. Claus process
Q. Linde process
R. Lurgi process
GROUP II
I. Syngas
II. Oxygen
III. Sulphur

A

P-I, Q-II, R-III

B

P-II, Q-I, R-III

C

P-III, Q-I, R-II

D

P-III, Q-II, R-I

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6

2010 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 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 regrettably, there exist people in military establishments 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.

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7

2011 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2011

The CORRECT sequence of process equipment used in the production of sulphuric acid from sulphur by contact process is

A

burner, catalytic converter, 98% sulphuric acid absorption tower, oleum absorption column

B

catalytic converter, oleum absorption column, 98% sulphuric acid absorption tower, burner

C

burner, catalytic converter, oleum absorption column, 98% sulphuric acid absorption tower

D

burner, oleum absorption column, catalytic converter, 98% sulphuric acid absorption tower

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8

2012 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2012

Match the process in Group I with the catalyst in Group II.
Group I
P. Fischer-Tropsch synthesis
Q. Formaldehyde from methanol
R. Hydrogenation of vegetable oils
S. Dehydrogenation of ethylbenzene
Group II
I. Nickel
II. \(Fe_2O_3\)
III. Silver
IV. Cobalt

A

P-III, Q-IV, R-I, S-II

B

P-IV, Q-II, R-I, S-III

C

P-IV, Q-III, R-I, S-II

D

P-III, Q-IV, R-I, S-II

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9

2013 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2013

Identify which of the following statements are FALSE. (P) Oils with an oleic radical (1 double bond) are more suitable than oils with a linolenic radical (3 double bonds) as film forming vehicles for paints (Q) Production of synthesis gas from coal and steam is an endothermic process (R) Use of chlorine for bleaching of wood pulp results in the release of dioxins (S) In the manufacture of urea from ammonia, the main intermediate product formed is ammonium bicarbonate

A

P and Q only

B

R and S only

C

Q and R only

D

P and S only

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10

2014 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2014

Decomposition efficiency (\(\eta_D\)) of an electrolytic cell used for producing NaOH is defined as

A

\(\eta_D = (\text{grams of NaOH produced} / \text{grams of NaCl decomposed}) \times 100\)

B

\(\eta_D = (\text{grams of NaOH produced} / \text{grams of NaCl charged}) \times 100\)

C

\(\eta_D = (\text{gram equivalents of NaOH produced} / \text{gram equivalents of NaCl charged}) \times 100\)

D

\(\eta_D = (\text{theoretical current to produce one gram equivalent} / \text{actual current to produce one gram equivalent}) \times 100\)

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11

2017 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2017

The DCDA (Double Contact Double Absorption) process is used for the manufacture of

A

urea

B

sulphuric acid

C

nitric acid

D

ammonia

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12

2017 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2017

The purpose of methanation reaction used in ammonia plants is to

A

remove CO as it is a catalyst poison

B

increase the amount of hydrogen

C

remove sulphur as it is a catalyst poison

D

utilize methane as a catalyst for ammonia synthesis

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13

2017 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2017

Match the equipment in Group-1 with the process in Group-2
Group-1
P) Fluidized bed
Q) Multistage adiabatic reactor with inter-stage cooling
R) Fourdrinier machine
S) Diaphragm cell
Group-2
I) Paper-making
II) Sodium hydroxide manufacture
III) SO₂ oxidation
IV) Catalytic cracking
Choose the correct set of combinations.

A

P-IV, Q-III, R-I, S-II

B

P-IV, Q-III, R-II, S-I

C

P-III, Q-IV, R-I, S-II

D

P-III, Q-IV, R-II, S-I

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14

2019 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2019

Producer gas is obtained by

A

passing air through red hot coke

B

thermal cracking of naphtha

C

passing steam through red hot coke

D

passing air and steam through red hot coke

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15

2020 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2020

The operating temperature range for the Haber process is 350–500 °C. It is used for the production of ammonia at

A

20 MPa using Fe catalyst in an exothermic reaction

B

0.1 MPa using Fe catalyst in an exothermic reaction

C

20 MPa using Fe catalyst in an endothermic reaction

D

20 MPa using zeolite catalyst in an endothermic reaction

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16

2021 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2021

Match the common name of chemicals in Group – 1 with their chemical formulae in Group – 2.

Group – 1		Group – 2
P	Gypsum	I	Ca(H₂PO₄)₂
Q	Dolomite	II	CaSO₄.2H₂O
R	Triple superphosphate	III	CaCO₃.MgCO₃

The correct combination is:

A

P – III, Q – II, R – I

B

P – III, Q – I, R – II

C

P – II, Q – III, R – I

D

P – II, Q – I, R – III

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17

2022 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2022

Match the product in Group-1 with the manufacturing process in Group-2. The correct combination is

A

P-III, Q-I, R-IV, S-II

B

P-IV, Q-I, R-II, S-III

C

P-III, Q-IV, R-I, S-II

D

P-I, Q-IV, R-II, S-III

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18

2023 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2023

Which one of the following options represents the major components of oleum?

A

Sulfuric acid and nitric acid

B

Concentrated sulfuric acid and petroleum jelly

C

Sulfuric acid and hydrochloric acid

D

Sulfuric acid and sulfur trioxide

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19

2023 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2023

Match the products in Group 1 with the manufacturing processes in Group 2 listed in the table below.

A

P-III, Q-IV, R-I, S-II

B

P-III, Q-I, R-IV, S-II

C

P-IV, Q-I, R-II, S-III

D

P-I, Q-IV, R-II, S-III

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20

2024 · Chemical Engineering · Chemical Technology · Inorganic Chemicals and Fertilizers

Chemical Engineering (CH) 2024

In an ammonia manufacturing facility, the necessary hydrogen is generated from methane. The facility consists of the following process units -
P: Methanator, Q: CO shift convertor, R: CO₂ stripper, S: Reformer, T: Ammonia convertor
The correct order of these units, starting from methane feed is

A

S, Q, R, P, T

B

P, Q, R, S, T

C

S, P, Q, R, T

D

P, S, T, Q, R

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