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General Organic Chemistry MCQ for NEET. We covered all the General Organic Chemistry MCQ for NEET in this post for free so that you can practice well for the exam.
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MCQ on General Organic Chemistry for NEET Students
Which compound has the shortest bond length between carbon atoms?
a) C₂H₂
b) C₂H₄
c) C₂H₆
d) C₆H₆
Option a – C₂H₂
Which reagent helps differentiate ethane from ethene?
a) Burning splinter
b) Bromine water
c) Litmus solution
d) Lime water
Option b – Bromine water
In the welding of iron pieces using gas, which combination is commonly used?
a) Ethane and oxygen
b) Ethene and oxygen
c) Ethyne and oxygen
d) Ethene and air
Option c – Ethyne and oxygen
Identify the option that matches the given descriptions: A. Beverages that include ethanol B. Major contributors to government revenue
a) Alcoholic drinks
b) Soft beverages
c) Fizzy drinks
d) Rectified spirit
Option a – Alcoholic drinks
Which acid is responsible for the pain and irritation caused by a bee sting?
a) Acetic acid
b) Sulphuric acid
c) Citric acid
d) Methanoic acid
Option d – Methanoic acid
Which of the following are structural isomers?
a) Ethanol and dimethyl ether
b) Acetone and acetaldehyde
c) Propanoic acid and propanone
d) Methanol and dimethyl ether
Option a – Ethanol and dimethyl ether
Methoxyethane and propanol exhibit which kind of isomerism?
a) Structural
b) Positional
c) Functional
d) Tautomerism
Option c – Functional
Which are the correct isomers of propanoic acid?
a) HCOOC₂H₅ and CH₃COOCH₃
b) HCOOC₂H₅ and C₂H₂COOH
c) CH₃COOCH₃ and C₃H₂OH
d) C₃H₇OH and CH₃COCH₃
Option a – HCOOC₂H₅ and CH₃COOCH₃
Which of these is not a valid isomer of CH₃COCH₂CH₂CH₂CH₃?
a) CH₃CH₂OCH=CHCH₂CH₃
b) CH₃CH=CHCH₂CH₂CHO
c) (CH₃)₂CHCOCH₂CH₃
d) CH₃CH₂COCH₂CH₂CH₃
Option b – CH₃CH=CHCH₂CH₂CHO
What is the functional isomer of 1-butyne?
a) 2-butyne
b) 1-butene
c) 2-butene
d) 1,3-butadiene
Option d – 1,3-butadiene
Which of the following pairs of isomerism types cannot occur together?
a) Ring-chain and functional
b) Geometrical and optical
c) Metamerism and functional
d) Metamerism and chain
Option c – Metamerism and functional
Which enzyme is responsible for converting ethanol to acetic acid?
a) Zymase
b) Oxidase
c) Dehydrogenase
d) Invertase
Option c – Dehydrogenase
Vinegar’s primary chemical component is
a) Acetic acid
b) Ascorbic acid
c) Citric acid
d) Tartaric acid
Option a – Acetic acid
Which fatty acid cannot be used in soap making?
a) Butyric acid
b) Oleic acid
c) Palmitic acid
d) Stearic acid
Option a – Butyric acid
The enzyme that converts glucose into ethanol is
a) Zymase
b) Invertase
c) Maltase
d) Diastase
Option a – Zymase
The term “drinking alcohol” refers to which substance?
a) Methyl alcohol
b) Ethyl alcohol
c) Propyl alcohol
d) Isopropyl alcohol
Option b – Ethyl alcohol
Reduced pressure distillation is particularly useful for separating which compound?
a) Benzene (C₆H₆)
b) Petrol
c) Glycerol (CH₂OHCHOHCH₂OH)
d) Medical organic compounds
Option c – Glycerol (CH₂OHCHOHCH₂OH)
In the soap industry, glycerol is isolated from spent lye using
a) Steam distillation
b) Fractional distillation
c) Vacuum (reduced pressure) distillation
d) Solvent extraction
Option c – Vacuum (reduced pressure) distillation
What is the most recent technique used for purifying organic substances?
a) Chromatography
b) Fractional distillation
c) Crystallization
d) Distillation under vacuum
Option a – Chromatography
Which materials serve as adsorbents in adsorption chromatography?
a) Silica gel
b) Alumina
c) Zeolite
d) Both silica gel and alumina
Option d – Both silica gel and alumina
What serves as the stationary phase in paper chromatography?
a) Water
b) Alumina
c) Silica gel
d) None of these
Option a – Water
How is petroleum separated into its useful components?
a) Fractional distillation
b) Steam distillation
c) Vacuum distillation
d) Simple distillation
Option a – Fractional distillation
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