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Organic Chemistry PYQ — Page 58

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

All Organic Chemistry Questions (1783)

p-Hydroxybenzophenone upon reaction with bromine in carbon tetrachloride gives:

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Compound $A({C}_{9}{H}_{10}O)$ shows positive iodoform test. Oxidation of A with $KMn{O}_{4}/KOH$ gives acid $B({C}_{8}{H}_{6}{O}_{4})$ . Anhydride of B is used for the preparation of phenolphthalein. Compound A is:

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The major product of the following reaction is: ![JEE Main 2019 Chemistry, Aldehydes and Ketones — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Aldehydes_and_Ketones/648b5a67417cc3fb48d6671b/question_1__q_648b5a67417cc3fb48d6671b__cdn-question-pool.getmarks.app__9fd8b2a6-8b71-43f3-bded-d0ae8fcfe862-image__14598f473b_final_ppt_sync.png)

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The major product of the following reaction is: ![JEE Main 2019 Chemistry, Carboxylic Acid Derivatives — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Carboxylic_Acid_Derivatives/648b5a66417cc3fb48d66494/question_1__q_648b5a66417cc3fb48d66494__cdn-question-pool.getmarks.app__2f7bea6c-e856-4a59-bdae-b1125160932d-image__0403f326cd_final_ppt_sync.png)

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With dehydrating agent present which dicarboxylic acid is least reactive towards forming an anhydride?

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Acid strength given below the correct decreasing order will be :

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Which of the following is not a correct method of the preparation of benzyl amine from cyano benzene?

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Aniline dissolved in dilute $HCl$ is reacted with sodium nitrite at $0^{\circ}C$. This solution was added dropwise to a solution containing an equimolar mixture of aniline and phenol in dilute $HCl$. The structure of the major product is

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The major product in the following reaction is: ![JEE Main 2019 Chemistry, Amines — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a66417cc3fb48d66446/question_1__q_648b5a66417cc3fb48d66446__cdn-question-pool.getmarks.app__e8292158-96e4-4822-a056-3308d32aaa68-image__d88fbb4899_final_ppt_sync.png)

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Hinsberg’s reagent is:

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The major product obtained in the following reaction is: ![JEE Main 2019 Chemistry, Amines — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a66417cc3fb48d6643c/question_1__q_648b5a66417cc3fb48d6643c__cdn-question-pool.getmarks.app__a205c15a-9afd-422e-b138-77a97d5483df-173753e2-2c01-43a8-8ed8__cc1ddb2d90_final_ppt_sync.png)

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The increasing order of reactivity of the following compounds towards reaction with alkyl halides directly is: $(i)$ ![JEE Main 2019 Chemistry, Amines — question figure 1](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a67417cc3fb48d668e5/question_1__q_648b5a67417cc3fb48d668e5__cdn-question-pool.getmarks.app__7bc4f01a-8df5-4660-895a-4c5b76a295c7-image__8a705fe51b_final_ppt_sync.png) $(ii)$ ![JEE Main 2019 Chemistry, Amines — question figure 2](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a67417cc3fb48d668e5/question_2__q_648b5a67417cc3fb48d668e5__cdn-question-pool.getmarks.app__785bc409-bb51-4ff2-b518-d98c98422a80-image__4018c587e0_final_ppt_sync.png) $(iii)$ ![JEE Main 2019 Chemistry, Amines — question figure 3](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a67417cc3fb48d668e5/question_3__q_648b5a67417cc3fb48d668e5__cdn-question-pool.getmarks.app__48da1488-f142-43b3-95ed-af6e2e190ca2-image__84ab1b86ba_final_ppt_sync.png) $(iv)$ ![JEE Main 2019 Chemistry, Amines — question figure 4](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a67417cc3fb48d668e5/question_4__q_648b5a67417cc3fb48d668e5__cdn-question-pool.getmarks.app__9b44863e-8580-4684-bcd7-063042a91717-image__69e90d78ae_final_ppt_sync.png)

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Glucose and Galactose are having identical configuration in all the positions except position.

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The major product obtained in the following reaction is: ![JEE Main 2019 Chemistry, Amines — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a66417cc3fb48d6659f/question_1__q_648b5a66417cc3fb48d6659f__cdn-question-pool.getmarks.app__7850d1cd-2987-4915-bbfa-41f07db1de98-image__288cf6c60c_final_ppt_sync.png)

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Which of the given statements is incorrect about glycogen?

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If Dichloromethane (DCM) and water ${\text{H}}_{2}\text{O}$ are used for differential extraction, which one of the following statements is correct?

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The principle of column chromatography is:

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The major product of the following reaction is ![JEE Main 2019 Chemistry, Hydrocarbons — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Hydrocarbons/648b5a66417cc3fb48d6649f/question_1__q_648b5a66417cc3fb48d6649f__cdn-question-pool.getmarks.app__02cd06a9-b902-4e8f-a7d3-ac03f2956499-image__55cc6ef662_final_ppt_sync.png)

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Ethylamine $({C}_{2}{H}_{5}N{H}_{2})$ can be obtained from N-ethylphthalimide on treatment with:

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The compounds $A$ and $B$ in the following reaction are, respectively: ![JEE Main 2019 Chemistry, Hydrocarbons — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Hydrocarbons/648b5a66417cc3fb48d6654b/question_1__q_648b5a66417cc3fb48d6654b__cdn-question-pool.getmarks.app__ea6d4ad7-35f8-40a6-8a8d-699566537543-image__66bbe0a57c_final_ppt_sync.png)

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The major product of the following addition reaction is ![JEE Main 2019 Chemistry, Hydrocarbons — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Hydrocarbons/648b5a67417cc3fb48d66830/question_1__q_648b5a67417cc3fb48d66830__cdn-question-pool.getmarks.app__ff125a0f-cf0a-42b6-93d4-03066098c6b6-image__77fd0083df_final_ppt_sync.png)

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Maltose on treatment with dilute $HCl$ gives:

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An organic compound $‘X’$ showing the following solubility profile is: ![JEE Main 2019 Chemistry, Alcohols Phenols and Ethers — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Alcohols_Phenols_and_Ethers/648b5a66417cc3fb48d663e7/question_1__q_648b5a66417cc3fb48d663e7__cdn-question-pool.getmarks.app__25d7c087-a7b3-415c-9bd5-3f35e672cf7a-image__05d0a4d924_final_ppt_sync.png)

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![JEE Main 2019 Chemistry, Alcohols Phenols and Ethers — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Alcohols_Phenols_and_Ethers/648b5a67417cc3fb48d668dc/question_1__q_648b5a67417cc3fb48d668dc__cdn-question-pool.getmarks.app__fde1fbe8-dfd1-4698-aa5a-de564ad642d3-image__46ebb8469f_final_ppt_sync.png) cannot be prepared by:

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