Engineering Questions with Answers - Multiple Choice Questions
Chemical Technology MCQ’s – Inorganic Chemicals
1 - Question
Which of the mentioned is the formula of Oleum?
Explanation: Oleum – (H2SO4+SO3) which on summing up the like compounds will give H2S2O7.
2 - Question
Which of the mentioned can be used as raw material to manufacture sulphuric acid?
a) Iron pyrites
b) Elemental Sulphur
c) Hydrogen Sulphide
d) All of the mentioned
Explanation: Iron pyrites (FeS), Elemental Sulphur(S), Hydrogen Sulphur(H2S) all the mentioned has Sulphur so they can be used as raw material to manufacture sulphuric acid.
3 - Question
Which of the mentioned are constituents of producer gas?
a) CO, N2, H2
b) CO, H2
c) H2, CH4, CO
Explanation: Producer gas is produced from Coke, Air, and Steam as raw materials. So, CO,N2 and H2 will be the consituents.
4 - Question
In the manufacture of Acetylene (C2H2) by Wulff Process, Which of the following methods is involved?
a) Heating of copper tube
b) Use of Calcium Carbide
d) Pyrolsis of hydrocarbons
Explanation: Except option ‘Pyrolsis of hydrocarbons’, The others also yield C2H2 but Wulff process is where Pyrolysis occurs. Eg: From propane – C3H8 → C2H2 + C2H4 + CH4 + CO + H2 + CO2
5 - Question
Cryogenics deal with which of the following mentioned?
a) Production and utilization of low temperatures from 0 K to 123K
b) Production and utilization of low temperatures from 0 K to 273.15 K
c) Production and utilization of high temperatures from 273.15Kto 1000K
d) Production and utilization of high temperatures from 273.15K to 500K
Explanation: Cryogenics deal with sub zero temperatures the least mentioned in the options is 0K to 123K.
6 - Question
High purity oxygen in used in which of the mentioned cases?
b) Medical purposes
c) Chemical reactions
d) Oxidation processes
Explanation: Medical purposes need 100% pure oxygen for respiration whereas the mentioned options take up the available free oxygen.
7 - Question
Linde’s cycle uses which of the following effects?
a) Newton’s law of cooling
b) Fouriers law
c) Joule Thomson cooling
d) Fick’s law
Explanation: Linde’s cycle achieves liquefaction of gases by expansion through a throttle valve adiabatically which is known as Joule-Thomson cooling.
8 - Question
The three major components that are necessary in a fertilizer are?
a) Na, K, S
b) N, P, S
c) N, Cl, K
d) N, P, K
Explanation: Nitrogen promotes development of stems and leaves, Phosphorus stimulates early growth and accelerates seeding and Potassium is essential for development of grains, sugars etc.
9 - Question
Ammonia manufactured by Haber’s process uses which of the mentioned as catalyst?
Explanation: In Haber’s process, Iron is used as catalyst and Molybdenum is used as promoter.
10 - Question
Which of the mentioned can be used as an explosive and a fertilizer?
a) Ammonium Carbamate
c) Ammonium Chloride
d) Ammonium Nitrate
Explanation: Ammonium nitrate when exposed to high temperatures or mixed with combustible materials explodes.