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JEE Main

Practical Organic Chemistry

Chemistry

Previous Years Questions

Numerical

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A sample of $$0.125 \mathrm{~g}$$ of an organic compound when analyzed by Duma's method yields $$22.78 \mathrm{~mL}$$ of...
JEE Main 2022 (Online) 28th July Evening Shift
In the above reaction, $$5 \mathrm{~g}$$ of toluene is converted into benzaldehyde with $$92 \%$$ yield. The amount of ...
JEE Main 2022 (Online) 27th July Evening Shift
The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, su...
JEE Main 2022 (Online) 25th July Evening Shift
While estimating the nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from $$0.25 \math...
JEE Main 2022 (Online) 25th July Morning Shift
An organic compound with 51.6% sulfur is heated in a Carius tube. The amount of this compound which will form 0.752 g of...
JEE Main 2022 (Online) 30th June Morning Shift
How many of the given compounds will give a positive Biuret test ____________ ? Glycine, Glycylalanine, Tripeptide, Biur...
JEE Main 2022 (Online) 25th June Evening Shift
0.25 g of an organic compound containing chlorine gave 0.40 g of silver chloride in Carius estimation. The percentage of...
JEE Main 2022 (Online) 27th June Evening Shift
Kjeldahl's method was used for the estimation of nitrogen in an organic compound. The ammonia evolved from 0.55 g of the...
JEE Main 2022 (Online) 29th June Morning Shift
The transformation occurring in Duma's method is given below :$${C_2}{H_7}N + \left( {2x + {y \over 2}} \right)CuO \to x...
JEE Main 2021 (Online) 31st August Evening Shift
The number of moles of CuO, that will be utilized in Dumas method for estimation nitrogen in a sample of 57.5 g of N, N-...
JEE Main 2021 (Online) 27th August Morning Shift
In Duma's method of estimation of nitrogen, 0.1840 g of an organic compound gave 30 mL of nitrogen collected at 287 K an...
JEE Main 2021 (Online) 16th March Evening Shift
Using the provided information in the following paper chromatogram :Fig : Paper chromatography for compounds A and B.the...
JEE Main 2021 (Online) 25th February Morning Slot
1.86 g of aniline completely reacts to form acetanilide. 10% of the product is lost during purification. Amount of aceta...
JEE Main 2021 (Online) 24th February Evening Slot

MCQ (Single Correct Answer)

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Given below are two statements: one is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\mathb...
JEE Main 2022 (Online) 26th July Evening Shift
Which technique among the following, is most appropriate in separation of a mixture of $$100 \,\mathrm{mg}$$ of $$p$$-ni...
JEE Main 2022 (Online) 26th July Morning Shift
In base vs. acid titration, at the end point methyl orange is present as
JEE Main 2022 (Online) 25th July Evening Shift
Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:soli...
JEE Main 2022 (Online) 25th July Morning Shift
During the qualitative analysis of salt with cation y2+, addition of a reagent (X) to alkaline solution of the salt give...
JEE Main 2022 (Online) 24th June Morning Shift
Phenol on reaction with dilute nitric acid, gives two products. Which method will be most efficient for large scale sepa...
JEE Main 2022 (Online) 25th June Morning Shift
Given below are two statements : Statement I : In 'Lassaigne's Test', when both nitrogen and sulphur are present in an o...
JEE Main 2022 (Online) 26th June Morning Shift
Sodium stearate CH3(CH2)16COO$$-$$Na+ is an anionic surfactant which forms micelles in oil.Choose the correct statement ...
JEE Main 2021 (Online) 25th July Morning Shift
When silver nitrate solution is added to potassium iodide solution then the sol produced is :
JEE Main 2021 (Online) 22th July Evening Shift
Which purification technique is used for high boiling organic liquid compound (decomposes near its boiling point)?
JEE Main 2021 (Online) 22th July Evening Shift
For above chemical reactions, identify the correct statement from the following :...
JEE Main 2021 (Online) 20th July Morning Shift
Nitrogen can be estimated by Kjeldahl's method for which of the following compound?
JEE Main 2021 (Online) 17th March Evening Shift
Given below are two statements :Statement I : Retardation factor (Rf) can be measured in meter/centimeter.Statement II :...
JEE Main 2021 (Online) 17th March Morning Shift
In chromotography technique, the purification of compound is independent of :
JEE Main 2021 (Online) 16th March Morning Shift
On treating a compound with warm dil. H2SO4, gas X is evolved which turns K2Cr2O7 paper acidified with dil. H2SO4 to a g...
JEE Main 2021 (Online) 26th February Morning Shift
Given below are two statements : Statement I: Colourless cupric metaborate is reduced to cuprous metaborate in a luminou...
JEE Main 2021 (Online) 24th February Morning Slot
A flask contains a mixture of isohexane and 3-methylpentane. One of the liquids boils at 63oC while the other boils at 6...
JEE Main 2020 (Online) 8th January Morning Slot
A chromatography column, packed with silica gel as stationary phase, was used to separate a mixture of compounds consist...
JEE Main 2020 (Online) 7th January Evening Slot
A solution of m-chloronailimne, m-chlorophenol and m-chlorobenzoic acid in ethyal acetate was extracted initially with a...
JEE Main 2020 (Online) 7th January Morning Slot
The principle of column chromatography is
JEE Main 2019 (Online) 10th April Morning Slot
The organic compound that gives following qualitative analysis is : .tg {border-collapse:collapse;border-spacing:0;wid...
JEE Main 2019 (Online) 9th April Morning Slot
An organic compound neither reacts with natural ferric chloride solution nor with fehling solution. it however, reacts w...
JEE Main 2019 (Online) 8th April Morning Slot
An organic compound 'X' showing the following solubility profile is : ...
JEE Main 2019 (Online) 8th April Morning Slot
The correct match between Item I and Item II is : .tg {border-collapse:collapse;border-spacing:0;width:100%} .tg td{fo...
JEE Main 2019 (Online) 11th January Evening Slot
The correct match between item 'I' and item 'II' is : .tg {border-collapse:collapse;border-spacing:0;width:100%} .tg ...
JEE Main 2019 (Online) 10th January Evening Slot
If dichloromethane (DCM) and water (H2O) are used for differential extraction, which one of the following statements is ...
JEE Main 2019 (Online) 10th January Morning Slot
The correct match between Item-I and Item-II is : .tg {border-collapse:collapse;border-spacing:0;border:none;} .tg td...
JEE Main 2019 (Online) 9th January Morning Slot
In a complexometric titration of metal ion with ligand M(Metal ion) + L(Ligand) $$ \to $$ C(Complex) end point is esti...
JEE Main 2018 (Online) 16th April Morning Slot
For standardizing NaOH solution, which of the following is used as a primary standard ?
JEE Main 2018 (Online) 16th April Morning Slot
The correct match between items of List-I and List-II is : .tg {border-collapse:collapse;border-spacing:0;} .tg td{fon...
JEE Main 2018 (Online) 15th April Morning Slot
An alkali is titrated against an acid with methyl orange as indicator, which of the following is a correct combination?
JEE Main 2018 (Offline)
A solution containing a group-IV cation gives a precipitate on passing H2S. A solution of this precipitate in dil.HCl pr...
JEE Main 2017 (Online) 8th April Morning Slot
The most appropriate method of making egg-albumin sol is :
JEE Main 2016 (Online) 9th April Morning Slot
The hottest region of Bunsen flame shown in the figure below is : ...
JEE Main 2016 (Offline)
Which of the following reagents may be used to distinguish between phenol and benzoic acid ?
AIEEE 2011
Biuret test is not given by
AIEEE 2010
The compound formed in the positive test for nitrogen with the Lassaigne solution of an organic compound is
AIEEE 2004

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