Practice Questions

Q37.Match List I with List II : List-I List-II Properties Elements (a) Li (i) Poor water solubility of I− salt (b) Na (ii) Most abundant element in cell fluid (c) K (iii) Bicarbonate salt used in fire extinguisher (d) Cs (iv) Carbonate salt decomposes easily on heating Choose the correct answer from the options given below: (1) (a) −(iv), (b) −(iii), (c) −(ii), (d) −(i) (2) (a) −(i), (b) −(iii), (c) −(ii), (d) −(iv) (3) (a) −(iv), (b) −(ii), (c) −(iii), (d) −(i) (4) (a) −(i), (b) −(ii), (c) −(iii), (d) −(iv)

Q37.The major product of the following reaction is : (1) (2) (3) (4)

Q37.In the following reaction, the reason why meta-nitro product also formed is: (1) Formation of anilinium ion (2) -NH2 group is highly meta-directive (3) -NO2 substitution always takes place at meta- (4) low temperature position

Q37.Which of the following molecules does not show stereo isomerism ? JEE Main 2021 (22 Jul Shift 1) JEE Main Previous Year Paper (1) 3, 4 -Dimethylhex- 3 -ene (2) 3 -Methylhex- 1 -ene (3) 3 -Ethylhex- 3 -ene (4) 4 -Methylhex- 1 -ene

Q38.In a binary compound, atoms of element A form a hcp structure and those of element M occupy 2/3 of the tetrahedral voids of the hcp structure. The formula of the binary compound is: (1) M2 A3 (2) M4 A3 (3) M4 A (4) MA3 JEE Main 2021 (18 Mar Shift 1) JEE Main Previous Year Paper

Q38.Given below are two statements: Statement-I: Retardation factor (Rf) can be measured in meter/centimetre. Statement-II: Rf value of a compound remains constant in all solvents. Choose the most appropriate answer from the options given below: (1) Statement-I is true but statement-II is false (2) Both statement-I and statement-II are true (3) Both statement-I and statement-II are false (4) Statement-I is false but statement-II is true

Q38.Which one of the following pairs of isomers is an example of metamerism? (1) (2) (3) (4)

Q38. In the chemical reactions given above A and B respectively are : (1) H3 PO2 and CH3 CH2 Cl (2) CH3 CH2 OH and H3 PO2 (3) H3 PO2 and CH3 CH2 OH (4) CH3 CH2 Cl and H3 PO2

Q38.Given below are two statements: Statement I: A mixture of chloroform and aniline can be separated by simple distillation. Statement II: When separating aniline from a mixture of aniline and water by steam distillation aniline boils below its boiling point. In the light of the above statements, choose the most appropriate answer from the options given below: (1) Both Statement I and Statement II are true (2) Statement I is true but Statement II is false (3) Statement I is false but Statement II is true (4) Both Statement I and Statement II are false

Q38.For the following sequence of reactions, the correct products are : JEE Main 2021 (31 Aug Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q38. The product " A " and " B " formed in above reactions are (1) (2) (3) (4)

Q38.For the following graphs, Choose from the options given below, the correct one regarding order of reaction is : (1) (b) zero order (c) and (e) First order (2) (a) and (b) Zero order (e) First order (3) (b) and (d) Zero order (e) First order (4) (a) and (b) Zero order (c) and (e) First order JEE Main 2021 (25 Jul Shift 1) JEE Main Previous Year Paper

Q38.Presence of which reagent will affect the reversibility of the following reaction, and change it to a irreversible reaction : hv CH4 + I2 ⇌ CH3 −I + HI Reversible (1) HOCl (2) dilute HNO2 (3) Liquid NH3 (4) Concentrated HIO3

Q38.Which one of the following 0. 10 M aqueous solutions will exhibit the largest freezing point depression? (1) glycine (2) hydrazine (3) KHSO4 (4) glucose

Q38. Consider the given reaction, Identify ′X′ and ′Y′ : (1) (2) (3) (4) JEE Main 2021 (26 Aug Shift 2) JEE Main Previous Year Paper

Q38.The correct order of the following compounds showing increasing tendency towards nucleophilic substitution reaction is: (1) (iv) < (i) < (ii) < (iii) (2) (i) < (ii) < (iii) < (iv) (3) (iv) < (i) < (iii) < (ii) (4) (iv) < (iii) < (ii) < (i)

Q38.Given below are two statements: Statement-I : 2 -methylbutane on oxidation with KMnO4 gives 2 -methylbutan- 2-ol. Statement-II : n -alkanes can be easily oxidised to corresponding alcohol with KMnO4 . Choose the correct option : JEE Main 2021 (17 Mar Shift 2) JEE Main Previous Year Paper (1) Both statement I and statement II are correct (2) Both statement I and statement II are incorrect (3) Statement I is correct but Statement II is (4) Statement I is incorrect but Statement II is incorrect correct

Q38.Match List-I with List-II : List-I List-I (Name of ore/mineral) (Chemical formula) a Calamine i ZnS b Malachite ii FeCO3 c Siderite iii ZnCO3 d Sphalerite iv CuCO3 ⋅Cu(OH)2 JEE Main 2021 (27 Aug Shift 2) JEE Main Previous Year Paper Choose the most appropriate answer from the options given below : (1) (a) − (iv), (b) − (iii), (c) − (i), (d) − (ii) (2) (a) − (iii), (b) − (ii), (c) − (iv), (d) − (i) (3) (a ) -( iii ),( b )-( iv ),( c )-( i ),( d )-( ii) (4) (a ) -( iii ), ( b ) -( iv ),( c )-( ii ),( d )-( i)

Q38.The correct decreasing order of densities of the following compounds is : (1) (D) > (C) > (B) > (A) (2) (C) > (D) > (A) > (B) (3) (C) > (B) > (A) > (D) (4) (A) > (B) > (C) > (D)

Q38.Which one of the following given graphs represents the variation of rate constant ( k ) with temperature ( T ) for an endothermic reaction? (1) (2) (3) (4)

Q38.Identify A in the given chemical reaction. (1) (2) (3) (4)

Q39.Match List- I with List- II List- I List- II (a) Sodium Carbonate (i) Deacon (b) Titanium (ii) Castner-Kellner (c) Chlorine (iii) van-Arkel (d) Sodium hydroxide (iv) Solvay Choose the correct answer from the options given below: (1) (a) →(i), (b) →(iii), (c) →(iv), (d) →(ii) (2) (a) →(iii), (b) →(ii), (c) →(i), (d) →(iv) (3) (a) →(iv), (b) →(i), (c) →(ii), (d) →(iii) (4) (a) →(iv), (b) →(iii), (c) →(i), (d) →(ii) JEE Main 2021 (26 Feb Shift 2) JEE Main Previous Year Paper

Q39.Match List - I with List - II : List - II List - I (compound) (effect/affected species) a Carbon monoxide i Carcinogenic b Sulphur dioxide ii Metabolized by pyrus plants c Polychlorinated biphenyls iii Haemoglobin d Oxides of Nitrogen iv Stiffness of flower buds Choose the correct answer from the options given below: (1) (a ) - ( iii ), ( b ) - ( iv ), ( c ) - ( i ), ( d ) - ( ii) (2) (a) − (iv), (b) − (i), (c) − (iii), (d) − (ii) (3) (a) − (i), (b) − (ii), (c) − (iii), (d) − (iv) (4) (a) − (iii), (b) − (iv), (c) − (ii), (d) − (i)

Q39.Which of the following is a FALSE statement? (1) Carius tube is used in the estimation of sulphur in (2) Phosphoric acid produced on oxidation of an organic compound. phosphorus present in an organic compound is precipitated as Mg2 P2O7 by adding magnesia mixture. (3) Carius method is used for the estimation of (4) Kjeldahl's method is used for the estimation of nitrogen in an organic compound. nitrogen in an organic compound.

Q39.Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. JEE Main 2021 (20 Jul Shift 1) JEE Main Previous Year Paper Assertion A : Sharp glass edge becomes smooth on heating it up to its melting point. Reason R : The viscosity of glass decreases on melting. Choose the most appropriate answer from the options given below. (1) A is true but R is false (2) Both A and R are true but R is NOT the correct explanation of A. (3) A is false but R is true. (4) Both A and R are true and R is the correct explanation of A .