Organic Chemistry PYQ — Page 15

For reaction  The correct order of set of reagents for the above conversion is :

Identify product $[A],[B]$ and $[C]$ in the following reaction sequence. 

Number of molecules from below which cannot give ioddoform reaction is : Ethanol, Isopropyl alcohol, Bromoacetone, 2-Butanol, 2-Butanone, Butanal, 2-Pentanone, 3-Pentanone, Pentanal and 3-Pentanol


The reactions which cannot be applied to prepare an alkene by elimination, are  Choose the correct answer from the option given below :

 Choose the correct option for structures of A and $B$, respectively.

Match List I with List II  Choose the correct answer from the options given below:

Which structure of protein remains intact after coagulation of egg white on boiling?

Alkyl halide is converted into alkyl isocyanide by reaction with

Match List-I with List-II. <table class="pyq-table"><tbody><tr><td></td><td>List I (Reaction)</td><td></td><td>List II (Reagent(s))</td></tr><tr><td>(A)</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Alcohols_Phenols_and_Ethers/6682bd29ba0e94a3c4025ae7/question_1__q_6682bd29ba0e94a3c4025ae7__cdn-question-pool.getmarks.app__4ea85857-a940-4754-a3d4-a08de9c2b296__8f044bd179_final_ppt_sync.png" alt="JEE Main 2024 Chemistry, Alcohols Phenols and Ethers — question figure 1"></td><td>(I)</td><td>${\mathrm{Na}}_{2}{\mathrm{Cr}}_{2}{O}_{7}/{H}_{2}{\mathrm{SO}}_{4}$</td></tr><tr><td>(B)</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Alcohols_Phenols_and_Ethers/6682bd29ba0e94a3c4025ae7/question_2__q_6682bd29ba0e94a3c4025ae7__cdn-question-pool.getmarks.app__befbe557-5214-4daf-a30c-b03d96e3a17e__ceab678820_final_ppt_sync.png" alt="JEE Main 2024 Chemistry, Alcohols Phenols and Ethers — question figure 2"></td><td>(II)</td><td>$\text{ (i) }\mathrm{NaOH}\text{ (ii) }{\mathrm{CH}}_{3}\mathrm{Cl}$</td></tr><tr><td>(C)</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Alcohols_Phenols_and_Ethers/6682bd29ba0e94a3c4025ae7/question_3__q_6682bd29ba0e94a3c4025ae7__cdn-question-pool.getmarks.app__a3b21d23-d4c8-4c2f-b5fd-a315c904538d__0a115f3d40_final_ppt_sync.png" alt="JEE Main 2024 Chemistry, Alcohols Phenols and Ethers — question figure 3"></td><td>(III)</td><td>(i)$\mathrm{NaOH},{\mathrm{CHCl}}_{3}$ (ii) $\mathrm{NaOH}$ (iii) $\mathrm{HCl}$</td></tr><tr><td>(D)</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Alcohols_Phenols_and_Ethers/6682bd29ba0e94a3c4025ae7/question_4__q_6682bd29ba0e94a3c4025ae7__cdn-question-pool.getmarks.app__4964f20f-70e7-48a0-b2fa-3c2be2c42805__0d15e338e8_final_ppt_sync.png" alt="JEE Main 2024 Chemistry, Alcohols Phenols and Ethers — question figure 4"></td><td>(IV)</td><td>(i) $\mathrm{NaOH}$ (ii) ${\mathrm{CO}}_{2}$ (iii) $\mathrm{HCl}$</td></tr></tbody></table>Choose the correct answer from the options given below:

Which of the following nitrogen containing compound does not give Lassaigne's test?

The product (C) in the below mentioned reaction is: ${\mathrm{CH}}_{3}-{\mathrm{CH}}_{2}-{\mathrm{CH}}_{2}-\mathrm{Br}\rightarrow _{\Delta }^{{\mathrm{KOH}}_{(\mathrm{alc})}}A\overset{\mathrm{HBr}}{\rightarrow }B\rightarrow _{{\mathrm{KOH}}_{(\mathrm{aq})}}^{\Delta }C$

IUPAC name of following compound is 

Given below are two statements : Statement (I) : p-nitrophenol is more acidic than m-nitrophenol and o-nitrophenol. Statement (II) : Ethanol will give immediate turbidity with Lucas reagent. In the light of the above statements, choose the correct answer from the options given below :

Identify \(A\) and \(B\) in the given chemical reaction sequence : 

Which of the following is the correct structure of L-Glucose?

Ionic reactions with organic compounds proceed through: (A) Homolytic bond cleavage (B) Heterolytic bond cleavage (C) Free radical formation (D) Primary free radical (E) Secondary free radical Choose the correct answer from the options given below:

Number of optical isomers possible for $2$ – chlorobutane ........

From the compounds given below, number of compounds which give positive Fehling's test is Benzaldehyde, Acetaldehyde, Acetone, Acetophenone,Methanal, 4-nitrobenzaldehyde, cyclohexane carbaldehyde.

The number of halobenzenes from the following that can be prepared by Sandmeyer's reaction is _______ 

Correct order of basic strength of Pyrrole  , Pyridine , and Piperidine is:

Number of geometrical isomers possible for the given structure is/are _________. 

 The ratio of number of oxygen atoms to bromine atoms in the product \(\mathrm{Q}\) is ______ \(\times 10^{-1}\).

Vanillin compound obtained from vanilla beans, has total sum of oxygen atoms and \(\pi\) electrons is ______