Engineering Questions with Answers - Multiple Choice Questions
Chemical Technology MCQ’s – Organic Chemicals
1 - Question
Which of the mentioned are the principal constituents of an organic compound?
a) Carbon, Oxygen and Nitrogen
b) Carbon, Oxygen and Hydrogen
c) Carbon, Oxygen and Sulphur
d) Carbon, Oxygen and Sulphur
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Explanation: Any compound containing Carbon, Hydrogen and Oxygen as principal constituents is an organic compound.
2 - Question
Identify the organic chemical from the mentioned?
a) Benzene
b) Silicates
c) Aluminates
d) Sulphur
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Explanation: Benzene’s chemical formula is C6H6, which help us, identify it as organic chemical whereas the rest are inorganic, as they don’t posses Carbon, Oxygen, Hydrogen as chief constituents.
3 - Question
Which of the mentioned names is apt for Acetic Acid?
a) Methanoic Acid
b) Ethanoic Acid
c) Butanoic Acid
d) Pentanoic Acid
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Explanation: Acetic acid’s formula is CH3COOH, which consists of acetyl group (Ethanoyl group), So Acetic Acid can also be called as ethanoic acid (presence of 2 carbons).
4 - Question
Which of the mentioned can also be a formula of acetic acid?
a) C2H4O2
b) C2H4O3
c) CH4O2
d) C3H4O
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Explanation: Acetic acid’s formula is CH3COOH, summing up all Carbons, Hydrogen and Oxygen will result in C2H4O2.
5 - Question
What is the capacity of the refinery by Reliance Industry? Where is it located?
a) 10 million ton, Assam
b) 15 million ton, Jamnagar
c) 10 million ton, Ahmedabad
d) 15 million ton, Gandhinagar
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Explanation: Reliance Industry started one of the largest refineries in Jamnagar whose capacity is 15 million ton.
6 - Question
Natural Gas largely constitutes of which of the mentioned?
a) Ethane
b) Methane
c) Butane
d) Pentane
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Explanation: Methane is one of the major constituents of Natural Gas (about 75%).
7 - Question
Which of the mentioned is the simplest method of producing ethylene on large scale?
a) Thermal cracking of ethane
b) Deoxidation of ethylene oxide
c) Dehydration of ethanol
d) Dehalogenation of Ethyl Chloride
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Explanation: Steam/Thermal cracking if ethane is the easiest and economical means to produce ethylene on large scale, the rest of the reactions are not feasible due to low conversion, However, on laboratory scale ‘c’ can be achieved.
8 - Question
Molecular weight of perchloroethylene is approximately? (Cl-35.5, C-12)
a) 165
b) 166
c) 167
d) 168
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Explanation: Perchloroethane’s formula is C2Cl4. Therefore, its weight will be 12*2+35.5*4 = 166.
9 - Question
Pyrolsis of CCl4 will result in which of the mentioned compound?
a) Perchloroethylene
b) Trichloroethylene
c) Dichloroethylene
d) Hypochlorous acid
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Explanation: Pyrolysis is breaking down of molecules, when two moles of percholoroethylene is taken and pyrolysis is done, it yields perchloroethane and chlorine.
10 - Question
Which of the mentioned catalyst is used in preparation of synthetic ethanol? (Process is hydration of ethylene)
a) Zirconium
b) Platinum
c) Phosphoric acid on celite
d) Phosphoric acid on silica
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Explanation: Synthetic ethanol is made by dehydration of ethylene using phosphoric acid on celite catalyst.