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List of top Chemistry Questions on Organic Chemistry- Some Basic Principles and Techniques asked in JEE Main

On complete combustion of 0.492 g of an organic compound containing C, H and O, 0.7938 g of CO2 and 0.4428 g of H2O was produced. The % composition of oxygen in the compound is _______.
Which technique among the following, is most appropriate in separation of a mixture of $100\, mg$ of $p$-nitrophenol and picric acid ?
Complete combustion of $1.80 g$ of an oxygen containing compound $\left( C _{ x } H _{ y } O _{2}\right)$ gave $2.64 g$ of $CO _{2}$ and $1.08 g$ of $H _{2} O$. The percentage of oxygen in the organic compound is:
Kjeldahl's method cannot be used to estimate nitrogen for which of the following compounds ?
What is the IUPAC name of the following compound ?
Which of the following compounds will show the maximum enol content?
The IUPAC name of the following compound is:
The IUPAC name of the following compound is :
Which of the following compounds will be suitable for Kjeldahl's method for nitrogen estimation?
Two compounds I and II are eluted by column chromatography (adsorption of I > II). Which one of following is a correct statement ?
Which of the following compounds will show highest dipole moment ?
Which of the following molecules is least resonance stabilized?
The distillation technique most suited for separating glycerol from spent-lye in the soap industry is :
Which of the following pairs of compounds are positional isomers?
In Carius method of estimation of halogens $250\, mg$ of an organic compound gave $141\, mg$ of $AgBr$. The percentage of bromine in the compound is (atomic mass $Ag\, =\, 108, Br \,= \,80$)
Which one of the following acids does not exhibit optical isomerism?
Arrange in the correct order of stability (decreasing order) for the following molecules :
Which one of the following is most stable?
In nucleophilic substitution reaction, order of halogens as incoming (attacking) nucleophile is: $I^- > \, Br^{-} > \, Cl^-$ The order of halogens as departing nucleophile should be:
Which of the free radical is most stable?

Directions: The answer to the following question is a single digit integer ranging from 0 to 9. Enter the correct digit in the box given below.

How many open chain structures are possible for N-Methly butanamine (including it) that are referred to as metamers.

Which of the following are amongst the few carbon-containing compounds NOT classified as organic?
Resonance in carbonate ion $\left( CO _3{ }^{2-}\right)$ is
Which of the following is true?
In the test for phosphorus using ammonium molybdate, yellow precipitate of compound (X) is obtained. What is the oxidation state of molybdenum in (X)?
Assertion: Kjeldahl method is not used for pyridine.
Reason: Nitrogen of pyridine does not change to ammonium sulphate under these conditions.

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