JEE Main Chemistry — Organic Chemistry previous year questions with solutions.
Choose the correct set of reagents for the following conversion trans$(\mathrm{Ph}-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_{3})\rightarrow \text{ cis }(\mathrm{Ph}-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_{3})$
All structures given below are of vitamin $C$. Most stable of them is:
Given below are two statements : Statement I :  under Clemmensen reduction conditions will give  Statement II :  under Wolff-Kishner reduction condition will give  In the light of the above statements, choose the correct answer from the options given below :
' A ' in the given reaction is 
. Match List I with List II : <table class="pyq-table"><tbody><tr><td colspan="2" rowspan="1">List I (Reagents used)</td><td colspan="2" rowspan="1">List II (Compound with Functional group detected)</td></tr><tr><td>A.</td><td>Alkaline solution of copper sulphate and sodium citrate</td><td>I.</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Aldehydes_and_Ketones/648b5a70417cc3fb48d68402/question_1__q_648b5a70417cc3fb48d68402__cdn-question-pool.getmarks.app__d3130153-0692-4959-b528-b5b6fa417b45__e9b2522ab3_final_ppt_sync.png" alt="JEE Main 2023 Chemistry, Aldehydes and Ketones — question figure 1"></td></tr><tr><td>B.</td><td>Neutral ${\mathrm{FeCl}}_{3}$ solution</td><td>II.</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Aldehydes_and_Ketones/648b5a70417cc3fb48d68402/question_2__q_648b5a70417cc3fb48d68402__cdn-question-pool.getmarks.app__500acecd-e89e-4bc5-b5a5-2fc8c85b569e__2173145188_final_ppt_sync.png" alt="JEE Main 2023 Chemistry, Aldehydes and Ketones — question figure 2"></td></tr><tr><td>C.</td><td>Alkaline chloroform solution</td><td>III.</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Aldehydes_and_Ketones/648b5a70417cc3fb48d68402/question_3__q_648b5a70417cc3fb48d68402__cdn-question-pool.getmarks.app__62dd3115-cd71-4c0d-9119-b371a81d5690__be682f3272_final_ppt_sync.png" alt="JEE Main 2023 Chemistry, Aldehydes and Ketones — question figure 3"></td></tr><tr><td>D.</td><td>Potassium iodide and sodium hypochloride</td><td>IV</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Aldehydes_and_Ketones/648b5a70417cc3fb48d68402/question_4__q_648b5a70417cc3fb48d68402__cdn-question-pool.getmarks.app__5801308d-075f-4405-818a-0811629d2710__04d2cf7a55_final_ppt_sync.png" alt="JEE Main 2023 Chemistry, Aldehydes and Ketones — question figure 4"></td></tr></tbody></table>Choose the correct answer from the options given below :
Decreasing order of reactivity towards electrophilic substitution for the following compounds is: 
The number of molecules which gives haloform test among the following molecules is : 
Arrange the following compounds in increasing order of rate of aromatic electrophilic substitution reaction. 
A compound $'X'$ when treated with phthalic anhydride in presence of concentrated ${H}_{2}{\mathrm{SO}}_{4}$ yields $'Y'$. $'Y'$ is used as an acid/base indicator. $'X'$ and $'Y'$ are respectively
 The number of hyperconjugation structures involved to stabilize carbocation formed in the above reaction is __________.
In the following reaction $‘X’$ is ${\mathrm{CH}}_{3}{({\mathrm{CH}}_{2})}_{4}{\mathrm{CH}}_{3}\rightarrow _{\underset{\triangle }{\mathrm{HCl}}}^{\mathrm{Anhy}.{\mathrm{AlCl}}_{3}}\underset{\mathrm{major}\mathrm{product}}{X}$
Number of isomeric aromatic amines with molecular formula ${C}_{8}{H}_{11}N$, which can be synthesized by Gabriel Phthalimide synthesis is _____.
Correct statements for the given reaction are:  A. Compound ‘$B$’ is aromatic B. The completion of above reaction is very slow C. ‘$A$’ shows tautomerism D. The bond lengths of $C-C$ in compound $B$ are found to be same Choose the correct answer from the options given below.
Which of the following statement is correct for paper chromatography?
Molar mass of the hydrocarbon (X) which on ozonolysis consumes one mole of ${O}_{3}$ per mole of (X) and gives one mole each of ethanal and propanone is ______ g mol$^{–1}$ (Molar mass of C : 12 g mol$^{–1}$ , H : 1 g mol$^{–1}$ )
A hydrocarbon 'X' with formula ${C}_{6}{H}_{8}$ uses two moles of ${H}_{2}$ on catalystic hydrogenation of its one mole. On ozonolysis, 'X' yields two moles of methane dicarbaldehyde. The hydrocarbon 'X' is :
Compoun $'B'$ is 
Which of the following is the IUPAC name of CH₃-CH=CH-CHO?
Testosterone, which is a steroidal hormone, has the following structure.  The total number of asymmetric carbon atom/s in testosterone is ____________.
Benzyl isocyanide can be obtained by: (A)  (B)  (C)  (D)  Choose the correct answer from the options given below:
$17\mathrm{mg}$ of a hydrocarbon (M.F. ${C}_{10}{H}_{16}$) takes up $8.40\mathrm{mL}$ of the ${H}_{2}$ gas measured at $0^{\circ}C$ and $760\mathrm{mm}$ of $\mathrm{Hg}$. Ozonolysis of the same hydrocarbon yields ${\mathrm{CH}}_{3}-\underset{\underset{O}{||}}{C}-{\mathrm{CH}}_{3},H-\underset{\underset{O}{||}}{C}-H,H-\underset{\underset{O}{||}}{C}-{\mathrm{CH}}_{2}-{\mathrm{CH}}_{2}-\underset{\underset{O}{||}}{C}-\underset{\underset{O}{||}}{C}-H$ The number of double bond/s present in the hydrocarbon is
Number of moles of $\mathrm{AgCl}$ formed in the following reaction is _____ . 
The mass of ${\mathrm{NH}}_{3}$ produced when $131.8\mathrm{kg}$ of cyclohexane carbaldehyde undergoes Tollen’s test is _____ $\mathrm{kg}$. (Nearest Integer) Molar mass of $C=12g/\mathrm{mol}$ $N=14g/\mathrm{mol}$ $O=16g/\mathrm{mol}$
The correct order of reactivity of following haloarenes towards nucleophilic substitution with aqueous $\mathrm{NaOH}$ is:  Choose the correct answer from the options given below: