Organic Chemistry: Some Basic Principles and Techniques PYQs
All NEET previous year questions from Organic Chemistry: Some Basic Principles and Techniques — with explanations.
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The pair of molecules that are metamers among the following is:
The correct IUPAC name of the following compound is:
During Lassaigne’s test, the elements present in an organic compound are converted from:
In a test tube containing a salt, a few drops of dilute H₂SO₄ was added, which gave colourless vapours having the smell of vinegar. The vapours turned blue litmus paper red. Identify the correct anion:
Which one of the following compounds can exist as cis-trans isomers? (1) Pent-1-ene (2) 2-Methylhex-2-ene (3) 1,1-Dimethylcyclopropane (4) 1,2-Dimethylcyclohexane
Total number of possible isomers (both structural as well as stereoisomers) of cyclic ethers of molecular formula O is :
Match List I with List II.
The most stable carbocation among the following is:
What is Y in the above reaction?
Which compound amongst the following is not an aromatic compound?
The Kjeldahl's method for estimation of nitrogen can be used to estimate the amount of nitrogen in which one of the following compounds?
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The compound which shows metamerism is:
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A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of ?
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The most stable carbocation among the following is
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A mixture of 2.3 g formic acid and 4.5 g oxalic acid is treated with conc. H₂SO₄. The evolved gaseous mixture is passed through KOH pellets. Weight (in g) of the remaining product at STP will be
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Which of the following molecules represents the order of hybridisation sp², sp², sp, sp from left to right atoms?
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Which of the following carbocations is expected to be most stable?
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Which of the following is correct with respect to –I effect of the substituents? (R = alkyl)
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The correct statement regarding electrophile is
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The correct increasing order of basic strength for the following compounds is
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In pyrrole, the electron density is maximum on:
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Which among the given molecules can exhibit tautomerism?
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Which of the following statements is not correct for a nucleophile?
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Two possible stereo-structures of , which are optically active, are called:
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In an S1 reaction on chiral centres, there is:
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Structure of the compound whose IUPAC name is 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is
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The structure of isobutyl group in an organic compound is
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The order of stability of the following tautomeric compounds is
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Which of the following species is not electrophilic in nature?
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Which of the following conformers for ethylene glycol is most stable?
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The IUPAC name of the compound having the formula is:
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The state of hybridization of , , and of the hydrocarbon shown below is:
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In the hydrocarbon shown below, the state of hybridization of carbons 1, 3 and 5 are in the following sequence.
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How many stereoisomers does the molecule CH₃CH=CHCH₂CHBrCH₃ have?
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The stability of carbanions in the following species is in the order of
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The basic strength of the following carbanions a, b and c is in the order of
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Which of the following compounds is optically active?
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In a set of reactions, propionic acid yielded a compound D. The structure of D would be:
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Which of the following is not chiral?
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The IUPAC name of the following compound is:
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Which amongst the following is the most stable carbocation?
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