Practice Questions

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 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.Which of the following sets are correct regarding polymer: (A) Copolymer : Buna- S (B) Condensation polymer : Nylon- 6, 6 (C) Fibres : Nylon- 6, 6 (D) Thermosetting polymer : Terylene (E) Homopolymers : Buna- N Choose the correct answer from given options below (1) (A), (B) and (C) are correct (2) (B), (C) and (D) are correct (3) (A), (C) and (E) are correct (4) (A), (B) and (D) are correct

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. Consider the above reaction, the compound ' A ' is (1) (2) (3) (4)

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

Q49. Which among the following represent reagent ' A '? JEE Main 2022 (29 Jul Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q49.Statements about Enzyme Inhibitor Drugs are given below : (A) There are Competitive and Non-competitive inhibitor drugs. (B) These can bind at the active sites and allosteric sites. (C) Competitive Drugs are allosteric site blocking drugs. (D) Non-competitive Drugs are active site blocking drugs. Choose the correct answer from the options given below (1) A, D only (2) A, C only (3) A, B only (4) A, B, C only

Q49.Which of the following compound does not contain sulphur atom? (1) Histamine (2) Cimetidine (3) Saccharin (4) Ranitidine

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.Match List-I with List-II List-I List-II JEE Main 2022 (27 Jul Shift 1) JEE Main Previous Year Paper A I Anti-depressant B II 550 times sweeter than cane sugar ​ C III Narcotic analgesic D IV Antiseptic Choose the correct answer from the options given below (1) A −IV, B −III, C −II, D −I (2) A −III, B −I, C −II, D −IV (3) A −III, B −IV, C −I, D −II (4) A −III, B −I, C −IV, D −II

Q49.A white precipitate was formed when BaCl2 was added to water extract of an inorganic salt. Further, a gas ′X′ with characteristic odour was released when the formed white precipitate was dissolved in dilute HCI. The anion present in the inorganic salt is: (1) I− (2) SO32− (3) S2− (4) NO−2

Q49.Which one of the following is NOT a copolymer? (1) Neoprene (2) PHBV (3) Buna- S (4) Butadiene-styrene JEE Main 2022 (28 Jun Shift 1) JEE Main Previous Year Paper

Q49.Which of the following enhances the lathering property of soap? (1) Sodium stearate (2) Sodium carbonate (3) Sodium rosinate (4) Trisodium phosphate

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

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.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

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.Match List - I with List - II. List-I List-II A I Dishwashing powder B II Toothpaste C C17H35 COO−Na+ + Na2 CO3+ Rosinate III Laundry soap D CH3 (CH2)16 COO (CH2 CH2 O)n CH2 CH2 OH IV Hair conditioner Choose the correct answer from the options given below (1) (A) −(IV), (B) −(II), (C) −(III), (D) −(I) (2) (A) −(III), (B) −(II), (C) −(IV), (D) −(I) (3) (A) −(IV), (B) −(III), (C) −(II), (D) −(I) (4) (A) −(II), (B) −(IV), (C) −(I), (D) −(II)

Q49.The structure of Tagamet (Cimetidine) is: (1) (2) (3) (4)

Q49.Two statements in respect of drug-enzyme interaction are given below Statement I : Action of an enzyme can be blocked only when an inhibitor blocks the active site of the enzyme. Statement II : An inhibitor can form a strong covalent bond with the enzyme. In the light of the above statements. Choose the correct answer from the options given below (1) Both Statement I and Statement II are true (2) Both Statement I and Statement II are false (3) Statement I is true but Statement II is false (4) Statement I is false but Statement II is true

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