JEE main 21st January 2026 session 1 Chemistry Question with answers скачать в хорошем качестве

JEE main 21st January 2026 session 1 Chemistry Question with answers

I have solved organic chemistry question with detailed explanation, tricks to solve quickly and precisely. Identify correct statement from the following : A. Propanal and propanone are functional isomers. B. Ethoxyethane and methoxypropane are metamers. C. But-2-ene shows optical isomerism. D. But-1-ene and but-2-ene are functional isomers. E. Pentane and 2, 2-dimethyl propane are chain isomers. Choose the correct answer from the options given below : 1. B, C and D only 2. A, B and C only 3. A, B and E only 4. C, D and E only Identify the correct statements. A. Arginine and Tryptophan are essential amino acids. B. Histidine does not contain heterocyclic ring in its structure C. Proline is a six membered cyclic ring amino acid. D. Glycine does not have chiral centre. E. Cysteine has characteristic feature of side chain as MeS-CH2-CH2-. Choose the correct answer from the options given below: Option (1) C and E Only (2) B and E Only (3) C and D Only (4) A and D Only The percentage of nitrogen in product ‘T’ formed is ________%. (Nearest integer) #isomerism #isomer #isomers #percentageofnitrogen #nitration #reduction #biomolecules #jee #jeemain #organicchemistry #chemistry #jee2026preparation #cbseclass12