Organic Chemistry JEE Mains Questions. We covered all the Organic Chemistry JEE Mains Questions in this post for free so that you can practice well for the exam.
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Mock Test on Organic Chemistry for Students
Statement I Petroleum is a mixture of many different hydrocarbons of different densities. Statement II The grade of petroleum depends mainly on the relative proportion of the different hydrocarbons. Codes
(a) Both the statements are individually true and statement II is the correct explanation of statement I.
(b) Both statements are individually true but statement II is not the correct explanation of statement I.
(c) Statement I is true but statement II is false.
(d) Statement I is false but statement Il is true.
Option a – Both the statements are individually true and statement II is the correct explanation of statement I
The compound in which the C-atom forms a closed chain is termed as
(a) aliphatic hydrocarbons
(b) cycloalkanes
(c) alkanes
(d) alkenes
Option b – cycloalkanes
Aromatic compounds are
(a) cyclic compounds
(b) aliphatic compounds
(c) saturated compounds
(d) All of the above
Option a – cyclic compounds
Which of the following is amongst the few carbon-containing compounds not classified as organic?
(a) Methane
(b) Nucleic acids
(c) Cyanides
(d) Propane
Option c – Cyanides
The wine is prepared through the process of
(a) fermentation
(b) catalyzation
(c) conjugation
(d) displacement
Option a – fermentation
Which of the following has the highest knocking property?
(a) Aromatic hydrocarbon
(b) Olefins
(c) Branched chain paraffins
(d) Straight chain paraffins
Option d – Straight chain paraffins
was the first person to isolate methane gas. He discovered that methane mixed with air could be exploded using an electric spark.
(a) Alessandro Volta
(b) William Thomson
(c) Luis Pasteur
(d) William Crookers
Option a – Alessandro Volta
The number of chain isomers of C7 H16 is
(a) 9
(b) 4
(c) 6
(d) 7
Option a – 9
Assertion (A) Isomers are the same compounds with different molecular formulas. Reason (R) Isomers have a different arrangement of their constituent atoms in space. Codes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Option d – A is false, but R is true
In hydrocarbons, carbon is tetravalent and hydrogen is
(a) divalent
(b) trivalent
(c) monovalent
(d) tetravalent
Option c – monovalent
Which of the following hydrocarbons has only one structure?
(a) Methane
(b) Ethane
(c) Propane
(d) All of these
Option d – All of these
If different carbon atoms are joined together to form an open chain of carbon atoms with a single bond only in a compound then such compounds are termed
(a) alkenes
(b) alkynes
(c) benzene
(d) alkanes
Option d – alkanes
Which of the following has a strong fruity fragrance?
(a) Methyl chloride
(b) Methanoic acid
(c) Methanol
(d) Ethyl acetate
Option b – Methanoic acid
Assertion (A) Formic acid is stronger than acetic acid. Reason (R) Formic acid is an organic acid. Codes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Option b – Both A and R are true, but R is not the correct explanation of A
Which of the following is an aldehyde?
(a) Propanal
(b) Pronanol
(c) Propanone
(d) Propine
Option d – Propine
The explosive nitroglycerine is a
(a) salt
(b) nitro hydrocarbons
(c) complex hydrocarbon
(d) ester
Option d – ester
Which of the following is a sweet-smelling substance?
(a) Ammonia
(b) Methanol
(c) Esters
(d) Ethanol
Option c – Esters
In which of the following functional group isomerism is not possible?
(a) Alcohols
(b) Aldehydes
(c) Alkyl halides
(d) Cyanides
Option c – Alkyl halides
Compounds having the same number and kind of atoms but different arrangements of atoms in their molecules are called
(a) allotropes
(b) isotopes
(c) isomers
(d) polymers
Option c – isomers
Normal butane and isobutane are
(a) optional isomers
(b) chain isomers
(c) positional isomers
(d) functional isomers
Option b – chain isomers
Alkanes having different properties due to differences in their structure are known as
(a) chain isomers
(b) position isomers
(c) structural isomers
(d) functional isomers
Option c – structural isomers
How many chain isomers can be formed by butane?
(a) One
(b) Three
(c) Two
(d) Four
Option c – Two
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