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.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

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

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 (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)

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

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 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.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 (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.Which of the following is not a condensation polymer? (1) Nylon −6, 6 (2) Nylon −6 (3) Dacron (4) Buna −S

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

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.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

Q49.Which of the following is NOT a natural polymer? (1) Protein (2) Starch (3) Rubber (4) Rayon

Q49.Some drugs bind to a site other than, the active site of an enzyme. This site is known as (1) non-active site (2) allosteric site (3) competitive site (4) therapeutic site

Q49.Drugs used to bind to receptors, inhibiting its natural function and blocking a message are called (1) antagonists. (2) agonists. (3) allosteric. (4) lead compounds.

Q49.Stearic acid and polyethylene glycol react to form which one of the following soap/s detergents? (1) Cationic detergent (2) Soap (3) Anionic detergent (4) Non-ionic detergent

Q49.Using very little soap while washing clothes, does not serve the purpose of cleaning of clothes, because (1) soap particles remain floating in water as ions. (2) colloidal structure of soap in water is completely disturbed. (3) the hydrophobic part of soap is not able to take (4) the micelles are not formed due to concentration away grease. of soap, below its CMC value.

Q49.Which of the following is NOT an example of synthetic detergent? (1) (2) CH3 −(CH2)16 −COO−Na+ (3) (4) CH3 (CH2)16 COO (CH2 CH2 O)n CH2 CH2 OH

Q49.A chemical which stimulates the secretion of pepsin is (1) Histamine (2) Cimetidine (3) Zantac (4) Anti histamine

Q49.The structure shown below is of which well-known drug molecule? (1) Codeine (2) Morphine (3) Ranitidine (4) Cimetidine

Q49.Vulcanization of rubber is carried out by heating a mixture of (1) isoprene and styrene (2) neoprene and sulphur (3) isoprene and sulphur (4) neoprene and styrene