Organic Chemistry JEE Mains Questions

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    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

    Quick Quiz

    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

    We covered all the organic chemistry jee mains questions above in this post for free so that you can practice well for the exam.

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