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Organic Chemistry PYQ — Page 63

JEE Main Chemistry — Organic Chemistry previous year questions with solutions.

All Organic Chemistry Questions (1783)

Which of the following compounds will form significant amount of meta product during mono-nitration reaction?

2017
medium
mcq

A mixture containing the following four compounds is extracted with $1M\mathrm{HCl}.$ The compound that goes to aqueous layer is: ![JEE Main 2017 Chemistry, Amines — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a65417cc3fb48d6616b/question_1__q_648b5a65417cc3fb48d6616b__cdn-question-pool.getmarks.app__6338858b-17ed-40cc-8321-bb811c953053-image__10ac6658b4_final_ppt_sync.png)

2017
medium
mcq

$3-$Methyl$-$pent$-2-$ene on reaction with $\mathrm{HBr}$in presence of peroxide forms an addition product. The number of possible stereoisomers for the product is

2017
easy
mcq

The reaction of propene with$\mathrm{HOCl}$ $(C{l}_{2}+{H}_{2}O)$ proceeds through the intermediate:

2016
medium
mcq

The absolute configuration of ![JEE Main 2016 Chemistry, General Organic Chemistry — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/General_Organic_Chemistry/648b5a64417cc3fb48d66006/question_1__q_648b5a64417cc3fb48d66006__cdn-question-pool.getmarks.app__image4-3a9e5e06-86a3-43a7-97bf-9c85b53f3332__4f97018a54_final_ppt_sync.png) is:

2016
medium
mcq

The product of the reaction give below is: ![JEE Main 2016 Chemistry, Haloalkanes and Haloarenes — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Haloalkanes_and_Haloarenes/648b5a64417cc3fb48d6600f/question_1__q_648b5a64417cc3fb48d6600f__cdn-question-pool.getmarks.app__9b208f5f-7e15-4d8e-9924-b706d4733cd7-quesst__0f609f1af1_final_ppt_sync.png)

2016
hard
mcq

Bouveault-Blanc reduction reaction involves:

2016
medium
mcq

The distillation technique most suited for separating glycerol from spent - lye in the soap industry is:

2016
hard
mcq

$2$- chloro - $2$ - methylpentane on reaction with sodium methoxide in methanol yields: (i) ![JEE Main 2016 Chemistry, Haloalkanes and Haloarenes — question figure 1](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Haloalkanes_and_Haloarenes/648b5a64417cc3fb48d66014/question_1__q_648b5a64417cc3fb48d66014__cdn-question-pool.getmarks.app__image26-9f76e861-1a2c-4ae1-a78a-0c87afd0ee14__2609f22761_final_ppt_sync.png) (ii) ![JEE Main 2016 Chemistry, Haloalkanes and Haloarenes — question figure 2](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Haloalkanes_and_Haloarenes/648b5a64417cc3fb48d66014/question_2__q_648b5a64417cc3fb48d66014__cdn-question-pool.getmarks.app__image27-288ab881-f90e-49d1-8615-d2039db73687__2a9d071842_final_ppt_sync.png) (iii) ![JEE Main 2016 Chemistry, Haloalkanes and Haloarenes — question figure 3](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Haloalkanes_and_Haloarenes/648b5a64417cc3fb48d66014/question_3__q_648b5a64417cc3fb48d66014__cdn-question-pool.getmarks.app__image28-31e7583f-5ca6-4813-a89b-4933cb7c6b94__cf5859a82d_final_ppt_sync.png)

2016
hard
mcq

In the Hoffmann bromamide degradation reaction, the number of moles of $\mathrm{NaOH}$ and $B{r}_{2}$ used per mole of amine produced are:

2016
medium
mcq

$5L$ of an alkane requires $25L$ of oxygen for its complete combustion. If all volumes are measured at constant temperature and pressure, the alkane is

2016
medium
mcq

Fluorination of an aromatic ring is easily accomplished by treating a diazonium salt with $HB{F}_{4}$. Which of the following conditions is correct about this reaction?

2016
medium
mcq

The correct statement about the synthesis of erythritol $(C{(C{H}_{2}OH)}_{4})$ used in the preparation of PETN is

2016
hard
mcq

The test to distinguish primary, secondary and tertiary amines is:

2016
medium
mcq

Thiol group is present in:

2016
medium
mcq

Bromination of cyclohexene under conditions given below yields: ![JEE Main 2016 Chemistry, Haloalkanes and Haloarenes — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Haloalkanes_and_Haloarenes/648b5a65417cc3fb48d660cc/question_1__q_648b5a65417cc3fb48d660cc__cdn-question-pool.getmarks.app__image9-a63f092e-4360-42a3-8a30-ccfcebb2e5e2__55869a2909_final_ppt_sync.jpg)

2016
medium
mcq

The hydrocarbon with seven carbon atoms containing a neopentyl and a vinyl group is:

2016
medium
mcq

The gas evolved on heating $C{H}_{3}MgBr$ in methanol is:

2016
easy
mcq

The $N$ which contribute least to the basicity of the compound is : ![JEE Main 2016 Chemistry, Amines — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a65417cc3fb48d660b9/question_1__q_648b5a65417cc3fb48d660b9__cdn-question-pool.getmarks.app__image2-c55cf25a-5711-41a2-9e7a-497edbd0197d__7c6551cdae_final_ppt_sync.jpg)

2016
medium
mcq

Observation of "Rhumann's purple" is a confirmatory test for the presence of:

2016
easy
mcq

Which one of the following reagents is not suitable for the elimination reaction? ![JEE Main 2016 Chemistry, Haloalkanes and Haloarenes — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Haloalkanes_and_Haloarenes/648b5a65417cc3fb48d660bb/question_1__q_648b5a65417cc3fb48d660bb__cdn-question-pool.getmarks.app__image3-70fcda5d-32da-48b9-b599-5e4090177024__1cadc64b05_final_ppt_sync.jpg)

2016
medium
mcq

Sodium extract is heated with concentrated $HN{O}_{3}$ before testing for halogens because :

2016
easy
mcq

Consider the following sequence for aspartic acid: ![JEE Main 2016 Chemistry, Biomolecules — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Biomolecules/648b5a65417cc3fb48d66065/question_1__q_648b5a65417cc3fb48d66065__cdn-question-pool.getmarks.app__29eb5e05-77fc-4035-9742-657fd75270eb-lppp__e55661f3b4_final_ppt_sync.jpg) The pH (Isoelectric point) of aspartic acid is:

2016
hard
mcq

Consider the reaction sequence below: ![JEE Main 2016 Chemistry, Hydrocarbons — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Hydrocarbons/648b5a65417cc3fb48d660ce/question_1__q_648b5a65417cc3fb48d660ce__cdn-question-pool.getmarks.app__image16-97a713e9-62a2-45b3-8b2a-9460ad823162__d65a57bce7_final_ppt_sync.jpg) X is :

2016
medium
mcq