Practice Questions

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.Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Dacron is an example of polyester polymer. Reason R: Dacron is made up of ethylene glycol and terephthalic acid monomers. In the light of the above statements, choose the most appropriate answer from the options given below. JEE Main 2022 (29 Jun Shift 2) JEE Main Previous Year Paper (1) Both A and R are correct and R is the (2) Both A and R are correct but R is NOT correct explanation of A the correct explanation of A. (3) A is correct but R is not correct. (4) A is not correct but R is correct.

Q47.Among the following structures, which will show the most stable enamine formation? (Where Me is −CH3 ) JEE Main 2022 (26 Jun Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q47.The products formed in the following reaction, A and B are ​ JEE Main 2022 (26 Jul Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q47.In the following reaction : JEE Main 2022 (25 Jun Shift 1) JEE Main Previous Year Paper The compounds A and B respectively are (1) (2) (3) (4)

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

Q47. Identify ' Z' among the following (1) (2) (3) (4)

Q47.Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Aniline on nitration yields ortho, meta & para nitro derivatives of aniline. Reason R : Nitrating mixture is a strong acidic mixture. In the light of the above statements, choose the correct answer from the options given below (1) Both A and R are true and R is the correct (2) Both A and R are true but R is NOT the correct explanation of A explanation of A (3) A is true but R is false (4) A is false but R is true

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

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.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. The reaction of with bromine and KOH gives RNH2 as the end product. Which one of the following is the intermediate product formed in this reaction? (1) (2) R - NH - Br (3) R - N = C = O (4)

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

Q48.Given below are two statements, one is Assertion and other is Reason. Assertion: Natural rubber is a linear polymer of isoprene called cis-polyisoprene with elastic properties. Reason: The cis-polyisoprene molecules consist of various chains held together by strong polar interactions with coiled structure. In the light of the above statements, choose the correct one from the options given below (1) A Both Assertion and Reason are true and Reason (2) Both Assertion and Reason are true but Reason is is the correct explanation of Assertion not the correct explanation of Assertion. (3) Assertion is true but Reason is false. (4) Assertion is false but Reason is true.

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

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

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.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