Engineering Questions with Answers - Multiple Choice Questions
Chemical Industry MCQ’s – Inorganic Chemical – Sulfur
1 - Question
Which of the mentioned is the basic raw material for the production of sulfur?
a) CaO
b) Asbestos
c) Lead
d) Sulfur
View Answer
Explanation: Sulfur is one of the basic raw materials for the production of sulfuric acid.
2 - Question
What is the atomic weight of sulfur approximately?
a) 30
b) 31
c) 32
d) 33
View Answer
Explanation: The atomic weight of sulfur is approximately 32.
3 - Question
What is the melting point of Rhombic crystal sulfur?
a) 111.8 Celsius
b) 112.8 Celsius
c) 113.8 Celsius
d) 114.8 Celsius
View Answer
Explanation: The melting point of Rhombic crystal sulfur is 112.8.
4 - Question
What are iron pyrites also know as?
a) Sulfides of iron
b) Silicates of Alumina
c) Aluminates of Magnesium
d) Sulfides of Calcium
View Answer
Explanation: Iron pyrites has chemical formula FeS that is Sulfides of Iron.
5 - Question
What is the melting point of monoclinic crystals of sulfur?
a) 116 Celsius
b) 117 Celsius
c) 118 Celsius
d) 119 Celsius
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Explanation: Melting point of the monoclinic sulfur crystals is 119 Celsius.
6 - Question
What is the chemical formula of Oleum?
a) H2S2O7
b) H2S2O8
c) H2S2O9
d) H2S2O10
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Explanation: Chemical formula of Oleum is H2SO4 + SO3, which is H2S2O7.
7 - Question
To what size are the particles ground for an economic balance between heat transfer rate from combustion gases plus residence time?
a) 200 mesh
b) 100 mesh
c) 50 mesh
d) 18 mesh
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Explanation: The particle size range of 200 mesh was found to be an economic balance between heat transfer rate from combustion gases plus residence time, as dictated by rate of fall of particles, tower height, and grinding costs.
8 - Question
In cold stage catalytic reaction which catalyst is used to catalyze H2S + SO2 to produce S6 vapor?
a) Bauxite
b) Zirconium
c) Molybdenum
d) Aluminum oxide
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Explanation: Aluminum oxide catalyzes the H2S + SO2 reaction to produce S6 vapor.
9 - Question
If the sulfur contains Arsenic which attacks the Vanadium or Platinum catalyst during contact process. Using which of the following can the Arsenic be removed.
a) Milk of lime
b) Milk of magnesia
c) CaO
d) Salts of Sodium
View Answer
Explanation: Arsenic in the sulfur can be removed by contacting molten sulfur with milk of lime.
10 - Question
What percentage of SiO2 is present in Indian pyrite ore?
a) 5-7%
b) 10-12%
c) 16-19%
d) 20-21%
View Answer
Explanation: Indian pyrite ore at Amjhore contains 5-7% of SiO2 and requires either floatation initially or extra limestone to flux out the silica.