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General Organic Chemistry — JEE Main & Advanced Chemistry PYQs

1,144 previous year questions from General Organic Chemistry with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

1,144 questionsChemistrySolutions on every page
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Given below are two statements: Statement I: Vapours of the liquid with higher boiling point condense before vapours of the liquid with lower boiling points in fractional distillat

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The total number of aromatic compounds/species from the following is

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Given below are two statements : Statement I : A mixture of C₁₂ H₂₂ O₁₁ (sugar) and NaCl can be separated by dissolving sugar in alcohol, due to differential solubility. Statement

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Shown below is the structure of methyl acetate with three different , and carbon - oxygen bonds. The correct order of bond lengths of these bonds is :

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Given below are two statements: Statement I: 2,6 -diethylcyclohexanone and 6 -methyl- 2 -n-propylcyclohexanone are metamers. Statement II: 2,2,6,6 -tetramethylcyclohexanone exhibit

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Match List-I with List-II. List-I (Purification technique) List-II (Used to separate) A. Simple distillation I. Steam volatile compound B. Fractional distillation II. Two liquids w

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Identify the correct IUPAC name of hydrocarbon ( x ) containing three primary carbon atoms and with molar mass 72 g mol ⁻¹ .

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Given below are two statements: Statement I: On the basis of inductive effect, the order of stability of alkyl carbanions is CH ₃^-> CH₃ -CH₂^- > ( CH₃ )₂ CH ^- > ( CH₃ )₃ C ^- . S

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In an estimation of sulphur by Carius method 0.2 g of the substance gave 0.6 g of BaSO₄ . The percentage of sulphur in the substance is _____ %. (Given molar mass in g mol ⁻¹ S : 3

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Consider the following molecules/species: (x) tropone, (y) acetone, (z) acetate ion The correct order of carbon – oxygen double bond length is:

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The following structures are

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In sulphur estimation, 2.0 10⁻³ mol of an organic compound (X) (molar mass 76 g mol ⁻¹ ) gave 0.4813 g of barium sulphate (molar mass 233 g mol ⁻¹ ). The percentage of sulphur in t

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Increasing order of electron withdrawing power of following functional groups is: a. -CN b. -COOH c. -NO₂ d. -I

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2.0 g of a bromo hydrocarbon (X) was subjected to Carius analysis, gave 3.36 g of AgBr . The percentage of carbon in the compound (X) is 26.7 % . Total number of carbon atoms in th

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Complete combustion of X g of an organic compound gave 0.25 g of CO₂ and 0.12 g of H₂ O . If the % of carbon is 25 % and of hydrogen is 4.89 % , then X = _____ 10⁻³ g. (Nearest int

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Given below are two statements: Statement I: In O₂ N - C₆ H₄ - CH^ - C₆ H₄ - OCH₃ , the carbocation is stabilised by +R effect of -OCH₃ group. Statement II: In O₂ N - C₆ H₄ - CH^ -

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In IUPAC nomenclature, the correct order of decreasing priority of functional group is :

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The cyclic cations having the same number of hyperconjugation are : Choose the correct answer from the options given below :

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CORRECT order of stability for the following is CH ₂= CH ⁻, CH ₃- CH ₂⁻, CH C ⁻

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0.53 g of an organic compound (x) when heated with excess of nitric acid (concentrated) and then with silver nitrate gave 0.75 g of silver bromide precipitate. 1.0 g of ( x ) gave

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Given below are two statements: Statement I : There are several conformers for n -butane. Out of those conformers, is the least stable and most stable conformer is Statement II : A

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Find out the statements which are not true. A. Resonating structures with more number of covalent bonds and lesser charge separation are more stable. B. In electromeric effect, an

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0.25 g of an organic compound " A " containing carbon, hydrogen and oxygen was analysed using the combustion method. There was an increase in mass of CaCl ₂ tube and potash tube at

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Arrange the following carbanions in the decreasing order of stability. Choose the correct answer from the options given below:

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Arrange the following alkenes in decreasing order of stability. Choose the correct answer from the options given below:

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In Dumas method for estimation of nitrogen, 0.50 g of an organic compound gave 70 mL of nitrogen collected at 300 K and 715 mm pressure. The percentage of nitrogen in the organic c

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In Carius method 0.2425 g of an organic compound gave 0.5253 g silver chloride. The percentage of chlorine in the organic compound is

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Given below are two statements: Statement I : ( CH ₃ )₃ C is more stable than C H ₃ as nine hyperconjugation interactions are possible in ( CH ₃ )₃ C . Statement II : C H ₃ is less

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Given below are two statements : Statement I : Sublimation is used for the separation and purification of compounds with low melting point. Statement II : The boiling point of a li

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The IUPAC name of the following compound is :

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When 1 g of compound ( X ) is subjected to Kjeldahl's method for estimation of nitrogen, 15 mL 1 M H ₂ SO ₄ was neutralized by ammonia evolved. The percentage of nitrogen in compou

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Sodium fusion extract of an organic compound ( Y ) with CHCl ₃ and chlorine water gives violet color to the CHCl ₃ layer. 0.15 g of ( Y ) gave 0.12 g of the silver halide precipita

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Match List - I with List - II. array l List - I & List - II Pair of Compounds & Type of Isomers A. 2-Methylpropene and but-1-ene & I. Stereoisomers B. Cis-but-2-ene and trans-but-2

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Given below are four compounds : (a) n-propyl chloride (b) iso-propyl chloride (c) sec-butyl chloride (d) neo-pentyl chloride Percentage of carbon in the one which exhibits optical

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Given below are two statements : Statement I : Compound (X) , shown below, dissolves in NaHCO ₃ solution and has two chiral carbon atoms Statement II : Compound ( Y ) , shown below

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In Carius method, 0.75 g of an organic compound gave 1.2 g of barium sulphate, find percentage of sulphur (molar mass 32 ~g ~mol ⁻¹ ). Molar mass of barium sulphate is 233 ~g ~mol

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Identify correct statements from the following : A. Propanal and propanone are functional isomers. B. Ethoxyethane and methoxypropane are metamers. C. But-2-ene shows optical isome

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From the following, the least stable structure is:

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Consider the depicted hydrogen ( H ) in the hydrocarbons given below. The most acidic hydrogen ( H ) is

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The monomer (X) involved in the synthesis of Nylon 6,6 gives positive carbylamine test. If 10 moles of X are analyzed using Dumas method, the amount (in grams) of nitrogen gas evol

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Match the List-I with List-II array |l|l|l|l| & List-I & & List-II A. & Carbocation & I. & array l Species that can supply a pair of electrons. array B. & array l C-Free radical ar

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Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

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In Dumas' method 292 mg of an organic compound released 50 mL of nitrogen gas ( N ₂ ) at 300 K temperature and 715 mm Hg pressure. The percentage composition of ' N ' in the organi

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Which of the following is the correct IUPAC name of given organic compound ( X ) ?

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The IUPAC name of the following compound is -

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Match List-I with List-II - array |l|l|l|l| & array l List-I (Separation of) array & & array l List-II (Separation Technique) array (A) & array l Aniline from aniline-water mixture

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In which pairs, the first ion is more stable than the second?

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Given below are two statements. Statement I : The dipole moment of 4 CH ₃ - 3~~~~ CH = 3~~~~ CH - 1~~~~ CH = O is greater than 4 CH ₃ - 3 CH ₂ - 2 CH ₂ - 1 CH = O Statement II : C

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In Dumas' method for estimation of nitrogen 1 g of an organic compound gave 150 mL of nitrogen collected at 300 K temperature and 900 mm Hg pressure. The percentage composition of

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What is the correct IUPAC name of

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Given below are two statements: Statement I : Hyperconjugation is not a permanent effect. Statement II : In general, greater the number of alkyl groups attached to a positively cha

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In Dumas' method for estimation of nitrogen 0.4 g of an organic compound gave 60 mL of nitrogen collected at 300 K temperature and 715 mm Hg pressure. The percentage composition of

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The total number of structural isomers possible for the substituted benzene derivatives with the molecular formula C ₉ H ₁₂ is ______.

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Identify the correct statements from the following Choose the correct answer from the options given below

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During estimation of nitrogen by Dumas' method of compound X (0.42 ~g ) : _____ mL of N ₂ gas will be liberated at STP. (nearest integer) (Given molar mass in g mol ⁻¹: C : 12, H :

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Match List-I with List-II Choose the correct answer from the options given below :

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In Dumas' method for estimation of nitrogen, 0.5 gram of an organic compound gave 60 mL of nitrogen collected at 300 K temperature and 715 mm Hg pressure. The percentage compositio

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Consider the following compound (X) The most stable and least stable carbon radicals, respectively, produced by homolytic cleavage of corresponding ( C - H ) bond are :

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Designate whether each of the following compounds is aromatic or not aromatic.

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Given below are two statements : Statement (I): In partition chromatography, stationary phase is thin film of liquid present in the inert support. Statement (II) : In paper chromat

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In the sulphur estimation, 0.20 g of a pure organic compound gave 0.40 g of barium sulphate. The percentage of sulphur in the compound is ______ 10⁻¹ % . (Molar mass : O =16, ~S =3

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Total number of nucleophiles from the following is : ( NH ₃, PhSH , ( H ₃ C )₂ ~S , H ₂ C = CH ₂, O H , H ₃ O ^ , ( CH ₃ )₂ CO , )

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The steam volatile compounds among the following are : (A) (B) (C) (D) Choose the correct answer from the options given below :

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Match List - I with List - II. Choose the correct answer from the options given below :

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Given below are two statements : Statement (I) : are isomeric compounds. Statement (II) : are functional group isomers.

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The purification method based on the following physical transformation is :

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The correct order of stability of following carbocations is :

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Identify correct statement/s : (A) - OCH ₃ and - NHCOCH ₃ are activating group. (B) -CN and -OH are meta directing group. (C) -CN and - SO ₃ H are meta directing group. (D) Activat

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In Carius method of estimation of halogen, 0.25 g of an organic compound gave 0.15 g of silver bromide ( AgBr ) . The percentage of Bromine in the organic compound is 10^ -1 % (Nea

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The possible number of stereoisomers for 5-phenylpent-4-en-2-ol is

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Given below are two statements I and II. Statement I: Dumas method is used for estimation of "Nitrogen" in an organic compound. Statement II: Dumas method involves the formation of

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Which one of the carbocations from the following is most stable?

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Given below are two statements: Statement I: In Lassaigne's test, the covalent organic molecules are transformed into ionic compounds. Statement II: The sodium fusion extract of an

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Propane molecule on chlorination under photochemical condition gives two di-chloro products, " x " and " y ". Amongst " x " and " y ", " x " is an optically active molecule. How ma

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The correct stability order of the following species/molecules is:

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During " S " estimation, 160 mg of an organic compound gives 466 mg of barium sulphate. The percentage of Sulphur in the given compound is _______ %. (Given molar mass in g mol ⁻¹

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Given below are two statements : Statement (I) : Nitrogen, sulphur, halogen and phosphorus present in an organic compound are detected by Lassaigne's Test. Statement (II) : The ele

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The most stable carbocation from the following is :

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The incorrect statements regarding geometrical isomerism are : (A) Propene shows geometrical isomerism. (B) Trans isomer has identical atoms/groups on the opposite sides of the dou

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How many different stereoisomers are possible for the given molecule?

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The IUPAC name of the following compound is :

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In Carius method for estimation of halogens, 180 mg of an organic compound produced 143.5 mg of AgCl . The percentage composition of chlorine in the compound is _______ %. (Given :

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The correct stability order of the following resonance structures of ( CH ₃- CH = CH - CHO ) is

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Total number of stereo isomers possible for the given structure :

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In the given TLC, the distance of spot A & B are (5 ~cm ~ &~ 7 ~cm ), from the bottom of TLC plate, respectively. ( R _ f ) value of ( B ) is (x 10⁻¹ ) times more than ( A ). The v

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Methods used for purification of organic compounds are based on :

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Correct order of basic strength of Pyrrole , Pyridine , and Piperidine is:

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For the given compounds, the correct order of increasing ( pK _ a ) value : Choose the correct answer from the options given below :

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Relative stability of the contributing structures is :

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How many compounds among the following compounds show inductive, mesomeric as well as hyperconjugation effects?

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The correct sequence of acidic strength of the following aliphatic acids in their decreasing order is: ( CH ₃ CH ₂ COOH , CH ₃ COOH , CH ₃ CH ₂ CH ₂ COOH , HCOOH )

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IUPAC name of following hydrocarbon ((X) ) is :

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Given below are two statements : Statement (I) : Kjeldahl method is applicable to estimate nitrogen in pyridine. Statement (II) : The nitrogen present in pyridine can easily be con

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In qualitative test for identification of presence of phosphorous, the compound is heated with an oxidising agent. Which is further treated with nitric acid and ammonium molybdate

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Total number of optically active compounds from the following is ______

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Total number of aromatic compounds among the following compounds is ______.

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Which of the following are aromatic?

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Given below are two statements: Statements I: IUPAC name of Compound (A ) is 4-chloro-1,3-dinitrobenzene. Statements II: IUPAC name of Compound ( B ) is 4-ethyl-2-methylaniline. In

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In the given compound, the number of (2^ ) carbon atom (/ s ) is _______.

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The number of optical isomers in following compound is: ________

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The correct statement among the following, for a "chromatography" purification method is :

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The incorrect statement regarding the geometrical isomers of 2-butene is :

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Among ( VO ₂⁺, MnO ₄⁻ )and ( Cr ₂ O ₇²⁻ ), the spin-only magnetic moment value of the species with least oxidising ability is ______ BM (Nearest integer). (Given atomic member ( V

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Number of carbocations from the following that are not stabilized by hyperconjugation is _______

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Functional group present in sulphonic acids is :

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Which of the following statements are correct? A. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point. B. Aniline can be purified by steam

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Which of the following is metamer of the given compound (( X ) ) ?

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The correct nomenclature for the following compound is :

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Match List I with List II ( array llll List - I & List - II (Pair of compounds) & (Isomerism) (A) n-propanol and Isopropanol & (I) Metamerism (B) Methoxypropane and ethoxyethane &

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Using the given figure, the ratio of ( R _f ) values of sample ( A ) and sample ( C ) is (x 10⁻² ). Value of (x ) is ______

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Number of ( ) and ( ) bonds present in ethylene molecule is respectively :

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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Cis form of alkene is found to be more polar than the tra

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For the Compounds : (A) ( H ₃ C - CH ₂- O - CH ₂- CH ₂- CH ₃ ) (B) ( H ₃ C - CH ₂^2- CH ₂- CH ₂- CH ₃ ) (C) (D) The increasing order of boiling point is : Choose the correct answer

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Correct order of stability of carbanion is -

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Common name of Benzene - 1, 2 - diol is -

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The adsorbent used in adsorption chromatography is/are - A. silica gel B. alumina C. quick lime D. magnesia Choose the most appropriate answer from the options given below :

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The total number of 'sigma' and 'Pi' bonds in 2-oxohex-4-ynoic acid is ______

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Match List I with List II : Choose the correct answer from the options given below :

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Which of the following nitrogen containing compound does not give Lassaigne's test?

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Which among the following is incorrect statement?

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