Organic Chemistry PYQ — Page 48

Identify $A$ in the following reaction. 

Staggered and eclipsed conformers of ethane are:

 The product "$P$" in the above reaction is :

 In the above chemical reaction, intermediate "$X$" and reagent/condition "$A$" are :

Primary, secondary and tertiary amines can be separated using:

In the following reaction, the reason why meta-nitro product also formed is: 

The correct structure of Ruhemann's Purple, the compound formed in the reaction of Ninhydrin with proteins is:

A non-reducing sugar $A$ hydrolyses to give two reducing mono saccharides. Sugar $A$ is

The major products $A$ and $B$ in the following set of reactions are: 

In the given reaction $3-$Bromo$-2,2-$dimethyl butane $\overset{{C}_{2}{H}_{5}\mathrm{OH}}{\longrightarrow }\underset{\text{(Major Product)}}{'A'}$ Product $A$ is:

Which one of the following pairs of isomers is an example of metamerism?

In the following sequence of reactions, the final product $D$ is: 

Identify $A$ in the given chemical reaction. 

In Tollen's test for aldehyde, the overall number of electron(s) transferred to the Tollen's reagent formula ${[\mathrm{Ag}{({\mathrm{NH}}_{3})}_{2}]}^{+}$ per aldehyde group to form silver mirror is ___.(Round off to the Nearest integer)

 Identify the reagent(s) '$A$' and condition(s) for the reaction :

Which one of the following reactions does not occur ?

Benzene reacts with chlorine in the presence of FeCl₃ to give:

What is the final product (major) '$A$' in the given reaction?  Major product among the following is?

Which of the following compound gives pink colour on reaction with phthalic anhydride in conc. ${H}_{2}{\mathrm{SO}}_{4}$ followed by treatment with $\mathrm{NaOH}$?

Given below are two statements: Statement-I: Retardation factor $({R}_{f})$ can be measured in meter/centimetre. Statement-II: ${R}_{f}$ value of a compound remains constant in all solvents. Choose the most appropriate answer from the options given below:

Which one of the following tests used for the identification of functional groups in organic compounds does not use copper reagent?

 Which among the above compound/s does/do not form Silver mirror when treated with Tollen's reagent?

Match List - I with List - II.<table class="pyq-table"><tbody><tr><td colspan="2" rowspan="1">List-I (Salt)</td><td colspan="2" rowspan="1">List-II (Flame colour wavelength)</td></tr><tr><td>(a)</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a6a417cc3fb48d67218/question_1__q_648b5a6a417cc3fb48d67218__cdn-question-pool.getmarks.app__0217e565-ca29-4400-90db-6846af03ed46-image__778a74b7a7_final_ppt_sync.png" alt="JEE Main 2021 Chemistry, Amines — question figure 1"></td><td>(i)</td><td>${\mathrm{Br}}_{2}/\mathrm{NaOH}$</td></tr><tr><td>(b)</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a6a417cc3fb48d67218/question_2__q_648b5a6a417cc3fb48d67218__cdn-question-pool.getmarks.app__08d4de91-2a2f-4c10-8e2b-200519a02c8b-image__ec4150aca5_final_ppt_sync.png" alt="JEE Main 2021 Chemistry, Amines — question figure 2"></td><td>(ii)</td><td>${H}_{2}/\mathrm{Pd}-{\mathrm{BaSO}}_{4}$</td></tr><tr><td>(c)</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a6a417cc3fb48d67218/question_3__q_648b5a6a417cc3fb48d67218__cdn-question-pool.getmarks.app__10dcf030-7b0a-4369-bcd3-ee2434bc9ebb-image__01f6a5e148_final_ppt_sync.png" alt="JEE Main 2021 Chemistry, Amines — question figure 3"></td><td>(iii)</td><td>$\mathrm{Zn}(\mathrm{Hg})/\mathrm{Conc}.\mathrm{HCl}$</td></tr><tr><td>(d)</td><td><img src="https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Amines/648b5a6a417cc3fb48d67218/question_4__q_648b5a6a417cc3fb48d67218__cdn-question-pool.getmarks.app__fa1d2e93-87f7-4d63-915a-fd4ebb2a7ff9-image__1a5db1416e_final_ppt_sync.png" alt="JEE Main 2021 Chemistry, Amines — question figure 4"></td><td>(iv)</td><td>${\mathrm{Cl}}_{2}/\mathrm{Red}P,{H}_{2}O$</td></tr></tbody></table>Choose the correct answer from the options given below:

 Maleic anhydride Maleic anhydride can be prepared by :