Practice Questions

Q47.Identify the major product formed in the following sequence of reactions : (1) (2) (3) (4)

Q47.Which among the following is the strongest Bronsted base? (1) (2) (3) (4)

Q47.Which is true about Buna- N ? (1) It is a linear polymer of 1, 3-butadiene. (2) It is obtained by copolymerization of 1, 3 - butadiene and styrene. (3) It is obtained by copolymerization of 1, 3 - (4) The suffix N in Buna- N stands for its natural butadiene and acrylonitrile. occurrence.

Q47. Consider the above reaction, the product A and product B respectively are (1) (2) (3) (4)

Q47.The conversion of propan- 1 -ol to n-butylamine involves the sequential addition of reagents. The correct sequential order of reagents is (1) (i) SOCl2 (2) (i) HCl (ii) KCN (ii) H2/ Ni, Na(Hg)/C2H5 OH (iii) H2/ Ni, Na(Hg)/C2H5 OH (3) (i) SOCl2 (4) (i) HCl (ii) KCN (ii) CH3 NH2 (iii) CH3 NH2

Q47.With respect to the following reaction, consider the given statements: (A) o -Nitroaniline and p -nitroaniline are the predominant products. (B) p -Nitroaniline and m -nitroaniline are the predominant products. (C) HNO3 acts as an acid. (D) H2 SO4 acts as an acid. JEE Main 2022 (28 Jun Shift 2) JEE Main Previous Year Paper Choose the correct option. (1) (A) & (C) are correct statements. (2) (A) & (D) are correct statement. (3) (B) & (D) are correct statements. (4) (B) & (C) are correct statements.

Q47.Which of the following is an example of polyester? (1) Butadiene-styrene copolymer (2) Melamine polymer (3) Neoprene (4) Poly- β -hydroxybutyrate-co- β -hydroxyvalerate

Q47.An organic compound 'A' on reaction with NH3 followed by heating gives compound B. Which on further strong heating gives compound C C8H5NO2. Compound C on sequential reaction with ethanolic KOH, alkyl chloride and hydrolysis with alkali gives a primary amine. The compound A is (1) (2) (3) (4)

Q48.The Hinsberg reagent is (1) (2) (3) (4)

Q48.Which of the following ketone will NOT give enamine on treatment with secondary amines? [where t - Bu is -CCH33] (1) (2) (3) (4)

Q48.The correct sequential order of the reagents for the given reaction is (1) HNO2, Fe / H+, HNO2, KI, H2O / H+ (2) HNO2, KI, Fe / H+, HNO2, H2O / warm (3) HNO2, KI, HNO2, Fe / H+, H2O / H+ (4) HNO2, Fe / H+, KI, HNO2, H2O / warm

Q48.The mixture of chloroxylenol and terpineol is an example of : (1) Antiseptic (2) Pesticide (3) Disinfectant (4) narcotic analgesic

Q48.Terylene polymer is obtained by condensation of (1) Ethane-1, 2-diol and Benzene-1, 3 dicarboxylic (2) Propane-1, 2-diol and Benzene-1, 4 dicarboxylic acid acid (3) Ethane-1, 2-diol and Benzene-1, 4 dicarboxylic (4) Ethane-1, 2-diol and Benzene-1, 2 dicarboxylic acid acid

Q48.Match List I with List II. List-I List-II Enzyme Conversion of A. Invertase I. Starch into maltose B. Zymase II. Maltose into glucose C. Diastase III. Glucose into ethanol D. Maltase IV. Cane sugar into glucose Choose the most appropriate answer from the options given below (1) A −III, B −IV, C −II, D −I (2) A −III, B −II, C −I, D −IV (3) A −IV, B −III, C −I, D −II (4) A −IV, B −II, C −III, D −I

Q48.Match List-I with List-II. List-I List-II (Polymer) (Monomer) A Neoprene I Acrylonitrile B Teflon II Chloroprene C Acrilan III Tetrafluoroethene D Natural rubber IV Isoprene Choose the correct answer from the option given below: (1) A −II, B −III, C −I, D −IV (2) A −II, B −I, C −III, D −IV (3) A −II, B −I, C −IV, D −III (4) A −I, B −II, C −III, D −IV

Q48.Melamine polymer is formed by the condensation of JEE Main 2022 (25 Jul Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q48.Match List I with List II List-I (Polymer) List-II (Nature) A I Thermosetting polymer B II Fibers C III Elastomer D IV Thermoplastic polymer Choose the correct answer from the options given below (1) A −II, B −III, C −IV, D −I (2) A −III, B −II, C −IV, D −I (3) A −III, B −I, C −IV, D −II (4) A −I, B −III, C −IV, D −II JEE Main 2022 (28 Jul Shift 2) JEE Main Previous Year Paper

Q48.Which reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide (PhMgBr) followed by acidic hydrolysis? (1) CH3 –C ≡N (2) Ph −C ≡N (3) (4)

Q48.The polymer, which can be stretched and retains its original status on releasing the force is (1) Nylon- 6, 6 (2) Buna- N (3) Terylene (4) Bakelite

Q48.Which of the following is not a broad spectrum antibiotic? (1) Vancomycin (2) Penicillin G (3) Ofloxacin (4) Ampicillin

Q48.Match List I with List II List-I List-II Polymers Commenrcial names A Phenol-formaldehyde resin I Glyptal B Copolymer of 1, 3 -butadiene and styrene II Novolac C Polyester of glycol and phthalic acid III Buna- s D Polyester of glycol and terephthalic acid IV Dacron Choose the correct answer from the options given below (1) A −II, B −III, C −IV, D −I (2) A −II, B −III, C −I, D −IV (3) A −II, B −I, C −III, D −IV (4) A −III, B −II, C −IV, D −I

Q48.Match List-I with List-II List-I List-II (A) Antipyretic (I) Reduces pain (B) Analgesic (II) Reduces stress JEE Main 2022 (27 Jun Shift 2) JEE Main Previous Year Paper (C) Tranquilizer (III) Reduces fever (D) Antacid (IV) Reduces acidity(stomach) Choose the correct answer from the options given below (1) A −III, B −I, C −II, D −IV (2) A −III, B −I, C −IV, D −II (3) A −I, B −IV, C −II, D −III (4) A −I, B −III, C −II, D −IV

Q48.A primary aliphatic amine on reaction with nitrous acid in cold (273 K) and there after raising temperature of reaction mixture to room temperature (298 K), gives a/an (1) Alcohol (2) nitrile (3) diazonium salt (4) secondary amine

Q48.Match List-I with List-II List-I List-II A Nylon 6, 6 I Buckets Low density Non-stick B II polythene utensils High density Bristles of C III polythene brushes D Teflon IV Toys Choose the correct answer from the options given below (1) A −III, B −I, C −IV, D −II (2) A −III, B −IV, C −I, D −II (3) A −II, B −I, C −IV, D −III (4) A −II, B −IV, C −I, D −III

Q48.Match List - I with List - II. List-I List-II (Polymer) (Used in) A Bakelite I Radio and television cabinets B Glyptal II Electrical switches C PVC III Paints and Lacquers D Polystyrene IV Water pipes Choose the correct answer from the options given below (1) (A) −(II), (B) −(III), (C) −(I), (D) −(IV) (2) (A) −(II), (B) −(III), (C) −(IV), (D) −(I) (3) (A) −(I), (B) −(II), (C) −(III), (D) −(IV) (4) (A) −(IV), (B) −(III), (C) −(II), (D) −(I)