Practical Organic Chemistry PYQs - Last 5 Years
JEE Main / Chemistry / Organic Chemistry / 74 recent questions
ChemistryOrganic Chemistry2022-2026
Practice 74 JEE Main Chemistry questions from Practical Organic Chemistry. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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Last 5 Years Practical Organic Chemistry Questions
Showing 24 of 74 filtered questions.
1Practical Organic Chemistry
Given below are two statements:
Statement I : Methyl orange is a weak acid.
Statement II : The benzenoid form of methyl orange is more intense/deeply coloured than the quinonoid form.
In the light of the above statement, choose the most app...
Statement I : Methyl orange is a weak acid.
Statement II : The benzenoid form of methyl orange is more intense/deeply coloured than the quinonoid form.
In the light of the above statement, choose the most app...
MCQ+4 / -12023
2Practical Organic Chemistry
A compound '\(\mathrm{X}\)' when treated with phthalic anhydride in presence of concentrated \(\mathrm{H}_{2} \mathrm{SO}_{4}\) yields '\(\mathrm{Y}\)'. '\(\mathrm{Y}\)' is used as an acid/base indicator. '\(\mathrm{X}\)' and '$$\mathrm{Y}$...
MCQ+4 / -12023
3Practical Organic Chemistry
Match List I with List II
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MCQ+4 / -12023
4Practical Organic Chemistry
In Dumas method for the estimation of $\mathrm{N}_{2}$, the sample is heated with copper oxide and the gas evolved is passed over :
MCQ+4 / -12023
5Practical Organic Chemistry
Compound that will give positive Lassaigne's test for both nitrogen and halogen is :
MCQ+4 / -12023
6Practical Organic Chemistry
Given below are two statements :
Statement I : Sulphanilic acid gives esterification test for carboxyl group.
Statement II : Sulphanilic acid gives red colour in Lassigne's test for extra element detection.
In the light of the above stateme...
Statement I : Sulphanilic acid gives esterification test for carboxyl group.
Statement II : Sulphanilic acid gives red colour in Lassigne's test for extra element detection.
In the light of the above stateme...
MCQ+4 / -12023
7Practical Organic Chemistry
\(\mathrm{KMnO}_{4}\) is titrated with ferrous ammonium sulphate hexahydrate in presence of dilute \(\mathrm{H}_{2} \mathrm{SO}_{4}\). Number of water molecules produced for 2 molecules of \(\mathrm{KMnO}_{4}\) is ___________.
INTEGER+4 / -12023
8Practical Organic Chemistry
\(0.400 \mathrm{~g}\) of an organic compound \((\mathrm{X})\) gave \(0.376 \mathrm{~g}\) of \(\mathrm{AgBr}\) in Carius method for estimation of bromine. \(\%\) of bromine in the compound \((\mathrm{X})\) is ___________.
(Given: Molar mass ...
(Given: Molar mass ...
INTEGER+4 / -12023
9Practical Organic Chemistry
Given below are two statements:
Statement I : Aqueous solution of K\(_2\)Cr\(_2\)O\(_7\) is preferred as a primary standard in volumetric analysis over Na\(_2\)Cr\(_2\)O\(_7\) aqueous solution.
Statement II : K\(_2\)Cr\(_2\)O\(_7\) has a hi...
Statement I : Aqueous solution of K\(_2\)Cr\(_2\)O\(_7\) is preferred as a primary standard in volumetric analysis over Na\(_2\)Cr\(_2\)O\(_7\) aqueous solution.
Statement II : K\(_2\)Cr\(_2\)O\(_7\) has a hi...
MCQ+4 / -12023
10Practical Organic Chemistry
In Carius tube, an organic compound '\(\mathrm{X}\)' is treated with sodium peroxide to form a mineral acid 'Y'.
The solution of \(\mathrm{BaCl}_{2}\) is added to '\(\mathrm{Y}\)' to form a precipitate 'Z'. 'Z' is used for the quantitative ...
The solution of \(\mathrm{BaCl}_{2}\) is added to '\(\mathrm{Y}\)' to form a precipitate 'Z'. 'Z' is used for the quantitative ...
MCQ+4 / -12023
11Practical Organic Chemistry
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 barium sulphate is ___________ \(\times\) 10\(-\)1 g.
(Given molar mass of barium sulphate 233 g mol\(-\)1) (Nearest in...
(Given molar mass of barium sulphate 233 g mol\(-\)1) (Nearest in...
INTEGER+4 / -12022
12Practical Organic Chemistry
The reagent neutral ferric chloride is used to detect the presence of ______________
MCQ+4 / -12022
13Practical Organic Chemistry
Kjeldahl's method was used for the estimation of nitrogen in an organic compound. The ammonia evolved from 0.55 g of the compound neutralised 12.5 mL of 1 M H2SO4 solution. The percentage of nitrogen in the compound is _____________. (Neare...
INTEGER+4 / -12022
14Practical Organic Chemistry
In bromination of Propyne, with Bromine, 1, 1, 2, 2-tetrabromopropane is obtained in 27% yield. The amount of 1, 1, 2, 2-tetrabromopropane obtained from 1 g of Bromine in this reaction is ___________ \(\times\) 10\(-\)1 g. (Nearest integer)...
INTEGER+4 / -12022
15Practical Organic Chemistry
In the estimation of bromine, 0.5 g of an organic compound gave 0.40 g of silver bromide. The percentage of bromine in the given compound is _________ % (nearest integer)
(Relative atomic masses of Ag and Br are 108u and 80u, respectively).
(Relative atomic masses of Ag and Br are 108u and 80u, respectively).
INTEGER+4 / -12022
16Practical Organic Chemistry
A 2.0 g sample containing MnO2 is treated with HCl liberating Cl2. The Cl2 gas is passed into a solution of KI and 60.0 mL of 0.1 M Na2S2O3 is required to titrate the liberated iodine. The percentage of MnO2 in the sample is _____________. ...
INTEGER+4 / -12022
17Practical Organic Chemistry
The formula of the purple colour formed in Laissaigne's test for sulphur using sodium nitroprusside is :
MCQ+4 / -12022
18Practical Organic Chemistry
A sample of \(0.125 \mathrm{~g}\) of an organic compound when analyzed by Duma's method yields \(22.78 \mathrm{~mL}\) of nitrogen gas collected over \(\mathrm{KOH}\) solution at \(280 \mathrm{~K}\) and \(759 \mathrm{~mm}\, \mathrm{Hg}\). Th...
INTEGER+4 / -12022
19Practical Organic Chemistry
0.25 g of an organic compound containing chlorine gave 0.40 g of silver chloride in Carius estimation. The percentage of chlorine present in the compound is ___________. [in nearest integer]
(Given : Molar mass of Ag is 108 g mol\(-\)1 and ...
(Given : Molar mass of Ag is 108 g mol\(-\)1 and ...
INTEGER+4 / -12022
20Practical Organic Chemistry
In the above reaction, \(5 \mathrm{~g}\) of toluene is converted into benzaldehyde with \(92 \%\) yield. The amount of benzaldehyde produced is ______________ \(\times 10^{-2} \mathrm{~g}\). (Nearest integer)
INTEGER+4 / -12022
21Practical Organic Chemistry
Given below are two statements :
Statement I : In 'Lassaigne's Test', when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed.
Statement II : If both nitrogen and sulphur are present in an organic com...
Statement I : In 'Lassaigne's Test', when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed.
Statement II : If both nitrogen and sulphur are present in an organic com...
MCQ+4 / -12022
22Practical Organic Chemistry
While estimating the nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from \(0.25 \mathrm{~g}\) of the compound neutralized \(2.5 \mathrm{~mL}\) of \(2 \,\mathrm{M} \,\mathrm{H}_{2} \mathrm{SO}_{4}\). The pe...
INTEGER+4 / -12022
23Practical Organic Chemistry
In base vs. acid titration, at the end point methyl orange is present as
MCQ+4 / -12022
24Practical Organic Chemistry
0.2 g of an organic compound was subjected to estimation of nitrogen by Dumas method in which volume of N2 evolved (at STP) was found to be 22.400 mL. The percentage of nitrogen in the compound is _________. [nearest integer]
(Given : Molar...
(Given : Molar...
INTEGER+4 / -12022