
	Trending ▼ ICSE CBSE 10th ISC CBSE 12th CTET GATE UGC NET Vestibulares ResFinder

ISC Class XII Sample / Model Paper 2026 : Chemistry

7 pages, 56 questions, 0 questions with responses, 0 total responses,

Apoorv Jain
City Montessori School (CMS), Kanpur Road, Lucknow
12 Science

+Fave Message

Profile Timeline Uploads

Home > mhgmgth35 >

Formatting page ...

1 Manzil JEE - Practice (2025) Aldehydes , Ketones and Carboxylic Acid Most Important JEE PYQs Single Correct Type Questions 1. Oxidation of toluene to benzaldehyde can be easily carried out with which of the following reagents? [26 June, 2022 (Shift-II)] (a) (b) (c) (d) CrO3/acetic acid, H3O+ CrO3 / acetic anhydride, H3O+ KMnO4 / HCl, H3O+ CO / HCl, anhydrous AlCl3 2. Match List-I with List-II: List-I COCl (A) List-II CHO (I) Gatterman Koch reaction H2 Pd - BaSO4 (B) (II) Etard reaction CH 3 (C) CHO (III) Stephen reaction CrO2Cl2 H3O + 4. CHO (D) CO,HCl AlCl3(Anhyd) 3. Which of the following reactions will yield benzaldehyde COOH COOH (i) SOCl 2 Quinoline as a product? COOH (a) (i) SOCl 2 Quinoline COOH(i) SOCl Quinoline (ii) H2 /2Pd / BaSO 4 (a) (i) (a) (ii)SOCl H2 / 2PdQuinoline / BaSO 4 (A) (a) (ii) H / Pd / BaSO (ii) H22 / Pd / BaSO 44 CH 2 OH CH OH CH 2OH CH 22OH CrO3 / H 2 SO4 (b) CrO3 / H 2 SO4 CrO / H SO (b) (b) (B) CrO33 / H 22SO44 (b) O O O OC OCH 3 C OCH (i) NaBH C OCH 3 (i) NaBH 4 (c) C OCH 33 (i) NaBH (ii) PCC44 (c) (C) (i) NaBH (c) (ii) PCC 4 (c) (ii) PCC (ii) PCC CH3 CH CH33 CH3 (i) CrO 3, (CH 3 CO) 2 O (d) (D) (i) CrO 3, (CH+3 CO) 2 O (d) (i) CrO (CH CO) O (ii) 3, H 2O (d) 3 O 3,CO) (i) CrO , (CH (d) (ii)3 H3 O++3, 2 (ii) H O , [27 June, 2022 (Shift-I)] (ii) H33O +, (a) (B) and (C) (b) (C) and (D) (c) (A) and (D) (d) (A) and (C) (IV) Rosenmund reaction Choose the correct answer from the options given below [27 July, 2022 (Shift-II)] (a) (A) - (IV), (B) - (III), (C) - (II), (D) - (I) O EtO C H2C (d) (A) - (III), (B) - (II), (C) - (I), (D) - (IV) (i) DiBAl-H (ii) H2O Consider the above reaction and predict the major product. [26 July, 2022 (Shift-II)] (a) OHC H2C CH2CH2CHO O (b) (A) - (I), (B) - (II), (C) - (III), (D) - (IV) (c) (A) - (II), (B) - (III), (C) - (IV), (D) - (I) CH2CH2CHO (b) EtO C H2C CH2CH2CHO 2 7. Match List-I with List-II O (c) (d) EtO C H2C List-I (Chemical Reaction) CH2CH2COOH OHC H2C CH2CH2COOH O O List-II (Reagent used) (A) CH3COOCH2CH3 CH3CH2OH (I) CH3MgBr/H3O+ (l.equivalent) (B) CH3COOCH3 CH3CHO (II) H2SO4/H2O (C) CH C 3 (III) DiBAL-H/H2O N CH3CHO O (i) DiBAL H, Toluene, 78 C + 5. (ii) H3O "P" (Major Product) The product P in the above reaction is: [16 March, 2021 (Shift-I)] CHO (a) (D) CH3C 4 N D H3C (IV) SnCl2, HCl/H2O CH3 [26 Aug, 2021 (Shift-II)] Choose the most appropriate match (a) (A) - (II); (B) - (IV); (C) - (III); (D) - (I) (b) (A) - (II); (B) - (III); (C) - (IV); (D) - (I) (c) (A) - (III); (B) - (II); (C) - (I); (D) - (IV) COOH (b) 8. The major aromatic product C in the following reaction sequence wil be [2 Sept, 2020 (Shift-I)] O O C (d) (A) - (IV); (B) - (II); (C) - (III); (D) - (I) H HBr (i) KOH ( Alc.) O3 (excess) A B C (ii) H + Zn/H O+ 3 (c) OH OH (a) OH (b) CO2H CHO CHO (d) 6. The major product of the following reaction is: Br Br (c) (d) CO2H CHO 9. The correct match between List-I (starting material) and List-II (reagent) for the preparation of benzaldehyde is List-II H 2 / CO Rh catalyst CH3CH2CH = CH2 (I) HCl and SnCl2, H3O+ (II) H 2 , Pd-BaSO 4 , S and quinoline [25 Feb, 2021 (Shift-II)] (a) CH3CH2CH2CH2CHO (C) Benzoyl Chloride (b) CH3CH2C Choose the most appropriate answer from the options given below. [6 Sept, 2020 (Shift-II)] CH2 CHO (c) CH3CH2CH2CHO (d) CH3CH2CH = CH CHO (III) CO, HCl and AlCl3 (a) (A)-(III), (B)-(I), (C)-(II) (b) (A)-(I), (B)-(II), (C)-(III) (c) (A)-(II), (B)-(III), (C)-(I) (d) (A)-(III), (B)-(II), (C)-(I) 3 10. O (i) Mg Br A is (ii) H2O 'A' (Major Product) O CH3 CH CH2 (a) [12 April, 2023 (Shift-I)] MgBr OH ii) H2O2, NaOH iii) PCC iv) CH3MgBr (a) (b) (b) (c) OH (c) 12. The product formed in the following multi step reaction is: [15 April, 2023 (Shift-I)] i) B2H6 OH MgBr (d) O (d) 13. 'A' and 'B' in the below reactions are: [11 April, 2023 (Shift-I)] O Br OH . R KMnO4 11. Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R). Cl (R = alkyl) (i) NH2 NH2, KOH can be subjected to Wolff- Kishner reduction to give (ii) H3O+ . CHO = A, (a) R CO2H Cl Reason (R): Wolff-Kishner reduction is used to convert O into CH2 . C In the light of the above statements, choose the correct [11 April, 2023 (Shift-II)] (a) Both (A) and (R) are true but (R) is NOT the correct explanation of (A). O (b) R CHO = A, B=R CO2H (c) R B= (b) (A) is true but (R) is false. O R CH3 CO2H = A, NHNH2 O C NH NH2 O (c) (A) is false but (R) is true. (d) Both (A) and (R) are true and (R) is the correct CH3 B=R answer from the options given below: explanation of (A). 'B' (Major Product) CO2H Assertion (A): O 'A' (Major Product) (d) R B=R CO2H = A, CO2H 4 Assertion (A): Zn-Hg/HCl to 14. Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). O OH (d) can be easily reduced using OH Reason (R): Zn-Hg/HCl is used to reduce carbonyl group to CH2 group. In the light of the above statements, choose the correct answer from the options given below: [30 Jan, 2023 (Shift-II)] (a) (A) is false but (R) is true. (b) (A) is true but (R) is false. (c) Both (A) and (R) are true but (R) is not the correct explanation of (A). (d) Both (A) and (R) are true and (R) is the correct explanation of (A). 15. Find out the major products from the following reaction sequence. [29 Jan, 2023 (Shift-II)] 16. Match List-I with List-II List-I (Reagents used) (A) Alkaline solution of copper sulphate and sodium citrate (I) (B) Neutral FeCl3 solution (II) (C) Alkaline chloroform solution (III) (D) Potassium iodide and sodium hypochlorite (a) (b) List-II (Compound with functional group detected) HO NH2 (IV) [8 April, 2023 (Shift-I)] Choose the correct answer from the options given below. (a) (A) (II), (B) (IV), (C) (III), (D) (I) (b) (A) (IV), (B) (I), (C) (II), (D) (III) (c) (A) (III), (B) (IV), (C) (I), (D) (II) (d) (A) (III), (B) (IV), (C) (II), (D) (I) 17. The structures of major products A, B and C in the following reaction are sequence. [1 Feb, 2023 (Shift-II)] (c) CHO OH 5 19. A in the given reaction is (a) [25 Jan, 2023 (Shift-II)] (b) (a) (b) (c) (d) 20. (c) O Me C OEt C CH3 D O A in the above reaction is : [12 April, 2023 (Shift-I)] (d) O O C CH3 (a) Me C C C Me O (b) Me C C CH C Me Me The correct sequence of reagents for the preparation of Q and R is: [25 Jan, 2023 (Shift-I)] (a) (i) Cr2O3, 770 K, 20 atm; (ii) CrO2Cl2, H3O+; O C CH3 (c) (iii) NaOH; (iv) H3O+ (b) (i) CrO2Cl2, H3O+; (ii) Cr2O3, 770 K, 20 atm; Me (iii) NaOH; (iv) H3O+ (c) (i) KMnO4, OH ; (ii) Mo2O3, ; (iii) NaOH; (iv) H3O+ (d) (i) Mo2O3, D; (ii) CrO2Cl2H3O+; (iii) NaOH; (iv) H3O+ (d) C CH3 O O 18. 'A' major Product O O C CH3 6 21. The correct order of acid character of the following compounds is: [25 Feb, 2021 (Shift-II)] OH COOH COOH COOH 24. Identify A in the following chemical reaction. CHO (i) HCHO, NaOH (ii) CH3CH 2 Br, NaH, DMF (iii) HI, CH3 O NO2 I II [26 Feb, 2021 (Shift-II)] CH3 IV III CH 2 OH (a) III > II > I > IV (b) II > III > IV > I (c) I > II > III > IV (d) IV > III > II > I 22. The structure of A in the given reaction is: O NaOH R Br (c) CH 2 I [27 July, 2022 (Shift-II)] OH R C CH3 H 3C O HO A major product OH (a) (a) (b) R C CH3 (d) CH 3O (a) CHO O OH , B= A= CH 2 OH OH H H (b) NaBH4 H A= H H O OH O H CH 2 OH (c) R R 23. The products formed in the following reaction, A and B are [26 July, 2022 (Shift-I)] A HO CH2CH3 O Br [Ag(NH3 )2 ]+ OH (b) C OCH 2 CH 3 (d) HO B 25. Which one of the following reactions does not represent correct combination of substrate and product under the given condition? [25 July, 2022 (Shift-I)] (a) O O CH 2 OH OH Cl H2 , B= (b) H (c) O CHO H (d) CH 2 OH H H OH H COOH CN COOH O H OH , B= A= H COOH O (i) DiBAL-H (c) CO2C2H5 (i) AlH (iso Bu)2 (ii) H2O H CH 2 OH H (ii) H2O , B= A= H Pd, BaSO4 O H 7 (d) O (i) Na2Cr2O7 H (ii) H2SO4, H2O 26. In the following sequence of reaction a compound A, (molecular formula C6H12O2) with a straight chain structure gives a C4 carboxylic acid. A is [1 Sept, 2021 (Shift-II)] A LiAlH 4 Oxidation B C4 carboxylic acid H3O+ 28. The major product formed in the following reaction is: [8 April, 2023 (Shift-I)] CO2H (i) LiBH4/ major product EtOH + (ii) H3O CO2Et OH (a) OH OH CO2Et CO2H (b) (c) (a) CH3 CH2 COO CH2 CH2 CH3 OH (b) CH3 CH2 CH CH2 O CH = CH2 (c) CH3 CH2 CH2 COO CH2 CH3 (d) CH3 CH2 CH2 O CH=CH CH2 OH 27. In the following reaction sequence the major products A and B are: [5 Sept, 2020 (Shift-I)] OH CO2H (d) CO2H 29. Compound(s) which will liberate carbon dioxide with sodium bicarbonate solution is/are: [25 Feb, 2021 (Shift-I)] NH2 COOH A= B= H 2N NH2 OH OH O ;B = O O CO2H (b) A = C= ;B = CO2H O ;B = CO2H O A= (d) A = ;B = CO2H NO2 (a) (b) (c) (d) NO2 A and B only B only B and C only C only Integer Type Questions 30. Among the following, the number of compounds which will give positive iodoform reaction is O (c) O2 N (a) A = O (a) (b) (c) (d) (e) (f) 1-Phenylbutan-2-one 2-Methylbutan-2-ol 3-Methylbutan-2-ol 1-Phenylethanol 3,3-dimethylbutan-2-one 1-Phenylpropan-2-ol PW Web/App - https://smart.link/7wwosivoicgd4 Library- https://smart.link/sdfez8ejd80if [6 April, 2023 (Shift-II)]

Formatting page ...

mhgmgth35 chat

Horizontal lines at:
Guest Horizontal lines at:
AutoRM Data:
Box geometries: