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General Organic Chemistry — JEE Main & Advanced NSEC PYQs

44 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.

44 questionsNSECSolutions on every page
1

The IUPAC name of the following compound is

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water insoluble, but organic solvent soluble, dye is dissolved in three organic solvents and taken in three separating funnels, a, b and c . To each solution, water is added, shake

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Organic compounds sometimes adjust their electronic as well as steric structures to attain stability. Among the following, the compound having highest dipole moment is

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The compound that will not react with silver perchlorate under normal conditions is

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The best sequence of reactions for preparation of the following compound from benzene is

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Complete catalytic hydrogenation of naphthalene gives decalin ( C ₁₀ H ₁₈ ) . The number of isomers of decalin formed and the total number of isomers of decalin possible are respec

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The diastereoisomer (stereoisomer that is not a mirror image) of ' X ' is

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In the case of dibromo derivatives of the following compound, the derivative having highest energy has the bromo substituents in positions

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The correct order of the magnitude of bond energy ( kJ / mol ) of the central C - C bond in the following compounds is (i) CH ₂= CH - CH = CH ₂ (j) Me ₃ C - CPh ₃ (k) MeCO - CO - M

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Pyrethrins are produced in chrysanthemum flowers and used as insecticides. Structure of pyrethrin I is given below. Pyrethrin I ( molar mass =328.0 ~g / mol ) The volume of 0.05 ~m

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In the given compound the order of ease with which hydrogen atom can be abstracted from carbons I to VI is

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Levonorgestrel is a commonly used contraceptive. The number of chiral centers present in this molecule is

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The product ' X ' in the following reaction is

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The correct order of basicity of the following species is

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The number of quaternary and chiral carbon atoms present in elatol, isolated from an algae are respectively

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The IUPAC name of the following compound is

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Atropine ( C ₁₇ H ₂₃ O ₃ ~N ) is a naturally occurring compound used to treat certain types of poisoning. The degree of unsaturation in atropine is

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The molecules that can exhibit tautomerism are

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The most stable radical among the following is

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IUPAC name of the following molecule is

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All four types of carbon (1^ , 2^ , 3^ . and .4^ ) are present in

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Which of the following compounds have chiral carbon atom/s?

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The number of asymmetric carbon atoms in strychnine, whose structure given below is

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Which atom/s will have a ⁺ charge in the following molecule?

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Nitromethane undergoes an aldol type reaction with a racemic mixture of 2-methylcyclohexanone in presence of aqueous NaOH in two steps ( I , II ) to give the product ' P '. The sta

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The most acidic hydrogen in the following molecule is

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Lovastatin, a drug used to reduce the risk of cardio vascular diseases has the following structure The number of stereogenic centers present in lovastatin is

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Ascorbic acid (Vitamin C), a naturally occurring water soluble vitamin and abundantly found in lemon, shows antioxidant properties. In ascorbic acid, the OH with the lowest pKa is

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-carotene and related compounds are plant pigments that give red, orange and yellow vegetables their vibrant colour. The structure of -carotene is given below. It is approved as a

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The formula/e which also represent/s a compound with formula X is/are

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Optically pure 2-butanol has a specific rotation of +13.52 degrees. A synthesized and purified sample of 2-butanol has the observed specific rotation of +6.76 degrees. The correct

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Reaction of para-Chloroaniline with acetic anhydride in pyridine gave a crude mixture of 94 % of para-chloroacetanilide and 6 % unreacted amine. From the following, the best treatm

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Which of the following compounds contains the maximum number of sp ^2 hybridized carbon atoms?

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A monobasic acid ( 0.100 g ) on complete combustion gave 0.252 g of CO ₂ and 0.044 ~g ^ of H ₂ O . For complete neutralization of 0.122 g of the acid, 10.0 mLof 0.1 M NaOH solution

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Acidity of acidic compounds depend on the stability of their conjugate bases. The correct order of acidity of the underlined H in the following compounds is (Note: Assume that all

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Given below are some names of the compounds. (p) Acetals; (q) silicones; (r) ferrocene; (s) glyoxal, (t) ethyl acetate, (u) gammaxene The set which is NOT having a double bond betw

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Which of the following compound is NOT named correctly according to the IUPAC nomenclature?

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The number of isomeric alkenes with molecular formula C ₅ H ₁₀ is (taking stereoisomers into account):

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The correct order of relative strength for the following nucleophilic species is: array lccc & & r & NH ₂ & OCH ₃ & CH ₃ COO & CH ₃ OH & II & III & IV array

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The correct statements for 1,3-butadiene from following are:

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The optically active compounds from the following are:

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Which of the following representations will exhibit cis-trans isomerism?

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Column A represents a set of functional groups and Column B their respective electronic effects. The correct match is:

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Pheromones are chemicals that animals produce for social response. The structure of brevicomin, a pheromone, is shown below. The open chain ketodiol that would form brevicomin is

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