Practice Questions

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

Q48.Which of the following is not a condensation polymer? (1) Nylon −6, 6 (2) Nylon −6 (3) Dacron (4) Buna −S

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

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

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.During the qualitative analysis of salt with cation y2+ , addition of a reagent (X) to alkaline solution of the salt gives a bright red precipitate. The reagent (X) and the cation (y2+) present respectively are : (1) Dimethylglyoxime and Ni2+ (2) Dimethylglyoxime and Co2+ (3) Nessler's reagent and Hg2+ (4) Nessler's reagent and Ni2+

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 (Anion) (gas evolved on reaction with dil. H2SO4 ) (A) CO2−3 (I) Colourless gas which turns lead acetate paper black. Colourless gas which turns acidified potassium dichromate (B) S2− (II) solution green. Brown fumes which turns acidified KI solution containing starch (C) SO2−3 (III) blue. gas evolved with brisk effervescence, which turns lime (D) NO−2 (IV)Colourless water milky. Choose the correct answer from the options given below (1) A −III, B −I, C −II, D −IV (2) A −II, B −I, C −IV, D −III (3) A −IV, B −I, C −III, D −II (4) A −IV, B −I, C −II, D −III

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

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

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

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.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.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.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.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.Match the following correctly (i) Zymase (a) Stomach (ii) Urease (b) Yeast (iii) Diastase (c) Malt (iv) Pepsin (d)Soyabean (1) (i)-B; (ii) D(iii)-C; (iv)-A (2) (i)-B; (ii)-A; (iii)-C; (iv)-D (3) (i)-A; (ii)-B; (iii)-C; (iv)-D (4) (i)-D; (ii)-C; (iii)-B; (iv)-A

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.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

Q50.A sugar ' X ' dehydrates very slowly under acidic condition to give furfural which on further reaction with resorcinol gives the coloured product after sometime. Sugar ' X ' is (1) Aldopentose (2) Aldotetrose (3) Oxalic acid (4) Ketotetrose