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Organic Chemistry Multiple Choice Questions and Answers – Hydrocarbons

(1) Hydrocarbons are organic compounds with element __________
[A] Hydrogen
[B] Oxygen
[C] Carbon
[D] Both hydrogen and carbon
Answer: Both hydrogen and carbon
(2) Find the odd one out.
[A] Aromatic
[B] Alkanes
[C] Alkynes
[D] Alkenes
Answer: Aromatic

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(3) The simplest member of organic compounds is?
[A] Methanol
[B] Methane
[C] Formaldehyde
[D] Formic acid
Answer: Methane
(4) Ethane is obtained by electrolyzing __________
[A] Potassium formate
[B] Potassium succinate
[C] Potassium acetate
[D] Potassium fumarate
Answer: Potassium succinate
(5) “Methane is a product of aerobic respiration”.
[A] False
[B] True
Answer: False
(6) Calcium carbide on reaction with water gives?
[A] Methane
[B] Ethane
[C] propane
[D] Acetylene
Answer: Acetylene
(7) Name the process associated with acylation of benzene.
[A] Friedel craft reaction
[B] Wurtz reaction
[C] Wurtz fitting reaction
[D] Debey Huckel reaction
Answer: Friedel craft reaction
(8) The hydrocarbon in which all the 4 valencies of carbon are fully occupied is called as __________
[A] Alkene
[B] Alkyne
[C] Alkane
[D] Cycloalkane
Answer: Alkane
(9) Liquid hydrocarbon is converted into gaseous hydrocarbon by __________
[A] Oxidation
[B] Hydrolysis
[C] Cracking
[D] Distillation
Answer: Cracking
(10) Chlorination of alkanes is an example of __________
[A] Radical
[B] Elimination
[C] Free radical
[D] Addition
Answer: Free radical

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