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Chemistry

Match List-I with List-II :

List-I (Chemical Compound)	List-II (Used as)
(a) Sucralose	(i) Synthetic detergent
(b) Glyceryl ester of stearic acid	(ii) Artificial sweetener
(c) Sodium benzoate	(iii) Antiseptic
(d) Bithionol	(iv) Food preservative

Choose the correct match :

32.

The set that represents the pair of neutral oxides of nitrogen is :

33.

The functional groups that are responsible for the ion-exchange property of cation and anion exchange resins, respectively, are :

34.

In the above reaction, the structural formula of (A), “X” and “Y” respectively are :

35.

Amongst the following, the linear species is :

36.

The correct pair(s) of the ambident nucleophiles is (are) :
(A) \( \mathrm{AgCN} \) / \( \mathrm{KCN} \) (B) \( \mathrm{RCOOAg} \) / \( \mathrm{RCOOK} \) (C) \( \mathrm{AgNO_2} \) / \( \mathrm{KNO_2} \) (D) \( \mathrm{AgI} \) / \( \mathrm{KI} \)

37.

Nitrogen can be estimated by Kjeldahl’s method for which of the following compound ?

38.

During which of the following processes, does entropy decrease ?
(A) Freezing of water to ice at \( 0^\circ\mathrm{C} \)
(B) Freezing of water to ice at \( -10^\circ\mathrm{C} \)
(C) \( \mathrm{N_2(g)} + 3\mathrm{H_2(g)} \rightarrow 2\mathrm{NH_3(g)} \)
(D) Adsorption of \( \mathrm{CO(g)} \) on lead surface
(E) Dissolution of \( \mathrm{NaCl} \) in water
Choose the correct answer from the options given below :

39.

Match List-I with List-II :

List-I	List-II
(a) Haematite	(i) \( \mathrm{Al_2O_3 \cdot xH_2O} \)
(b) Bauxite	(ii) \( \mathrm{Fe_2O_3} \)
(c) Magnetite	(iii) \( \mathrm{CuCO_3 \cdot Cu(OH)_2} \)
(d) Malachite	(iv) \( \mathrm{Fe_3O_4} \)

Choose the correct answer from the options given below :

40.

Primary, secondary and tertiary amines can be separated using :

41.

One of the by-products formed during the recovery of \( \mathrm{NH_3} \) from Solvay process is :

42.

The common positive oxidation states for an element with atomic number \( 24 \), are :

43.

Match List-I with List-II :

List-I	List-II
(a) \( [\mathrm{Co(NH_3)_6}][\mathrm{Cr(CN)_6}] \)	(i) Linkage isomerism
(b) \( [\mathrm{Co(NH_3)_3}(\mathrm{NO_2})_3] \)	(ii) Solvate isomerism
(c) \( [\mathrm{Cr(H_2O)_6}]\mathrm{Cl}_3 \)	(iii) Co-ordination isomerism
(d) \( \mathrm{cis}-[\mathrm{CrCl_2(ox)_2}]^{3-} \)	(iv) Optical isomerism

Choose the correct answer from the options given below :

44.

The set of elements that differ in mutual relationship from those of the other sets is :

45.

Choose the correct statement regarding the formation of carbocations A and B given.

46.

\( \displaystyle \underset{\text{Sucrose}}{\text{C}_{12}\text{H}_{22}\text{O}_{11}} + \text{H}_2\text{O} \xrightarrow{\text{Enzyme A}} \underset{\text{Glucose}}{\text{C}_6\text{H}_{12}\text{O}_6} + \underset{\text{Fructose}}{\text{C}_6\text{H}_{12}\text{O}_6}\)
\( \displaystyle \underset{\text{Glucose}}{\text{C}_6\text{H}_{12}\text{O}_6} \xrightarrow{\text{Enzyme B}} 2\text{C}_2\text{H}_5\text{OH} + 2\text{CO}_2 \)
In the above reactions, the enzyme A and enzyme B respectively are :

47.

Which of the following statement(s) is (are) incorrect reason for eutrophication ?
(A) excess usage of fertilisers
(B) excess usage of detergents
(C) dense plant population in water bodies
(D) lack of nutrients in water bodies that prevent plant growth
Choose the most appropriate answer from the options given below :

48.

Given below are two statements :
Statement-I : \( 2 \)-methylbutane on oxidation with \( \mathrm{KMnO_4} \) gives \( 2 \)-methylbutane-\( 2 \)-ol.
Statement-II : \( n \)-alkanes can be easily oxidised to corresponding alcohols with \( \mathrm{KMnO_4} \).
Choose the correct option :

49.

Fructose is an example of :

50.

For the coagulation of a negative sol, the species below, that has the highest flocculating power is :

51.

The total number of \( \mathrm{C{-}C} \) sigma bond/s in mesityl oxide \(( \mathrm{C_6H_{10}O} )\) is _______. (Round off to the Nearest Integer).

52.

Consider the reaction \( \mathrm{N_2O_4(g) \rightleftharpoons 2NO_2(g)} \). The temperature at which \( K_c = 20.4 \) and \( K_p = 600.1 \), is _______ \( \text{K} \). (Round off to the Nearest Integer)
[Assume all gases are ideal and \( R = 0.0831 \, \text{L bar K}^{-1} \text{ mol}^{-1} \)]

53.

In the ground state of atomic \( \mathrm{Fe} \) \( (Z = 26) \), The spin only magnetic moment is _______ \( \times 10^{-1} \) \( \mathrm{BM} \). (Round off to the Nearest Integer) [Given: \( \sqrt{3} = 1.73 \), \( \sqrt{2} = 1.41 \)]

54.

On complete reaction of \( \mathrm{FeCl_3} \) with oxalic acid in aqueous solution containing \( \mathrm{KOH} \), resulted in the formation of product A. The secondary valency of \( \mathrm{Fe} \) in the product A is _______. (Round off to the Nearest Integer)

55.

The reaction \( 2A + B_2 \rightarrow 2AB \) is an elementary reaction. For a certain quantity of reactants, if the volume of the reaction vessel is reduced by a factor of \( 3 \), the rate of the reaction increases by a factor of ________. (Round off to the Nearest Integer)

56.

A KCl solution of conductivity \( 0.14 \ \text{S m}^{-1} \) shows a resistance of \( 4.19 \ \Omega \) in a conductivity cell. If the same cell is filled with an HCl solution, the resistance drops to \( 1.03 \ \Omega \). The conductivity of the HCl solution is ________ \( \times 10^{-2} \ \text{S m}^{-1} \). (Round off to the Nearest Integer)

57.

Consider the above reaction. The percentage yield of amide product is ________. (Round off to the Nearest Integer) [Given : Atomic mass : \( \mathrm{C}: 12.0\,\text{u} \), \( \mathrm{H}: 1.0\,\text{u} \), \( \mathrm{N}: 14.0\,\text{u} \), \( \mathrm{O}: 16.0\,\text{u} \), \( \mathrm{Cl}: 35.5\,\text{u} \)]

58.

A \( 1 \) molal \( K_4 \,Fe(CN)_6 \) solution has a degree of dissociation of \( 0.4 \). Its boiling point is equal to that of another solution which contains \( 18.1 \) weight percent of a non electrolytic solute \( A \).
The molar mass of \( A \) is ________ \( \text{u} \). (Round off to the Nearest Integer) [Density of water \( = 1.0 \ \text{g cm}^{-3} \)]

59.

The number of chlorine atoms in \( 20 \ \text{mL} \) of chlorine gas at STP is ________ \( \times 10^{21} \). (Round off to the Nearest Integer) [Assume chlorine is an ideal gas at STP \( R = 0.083 \ \text{L bar mol}^{-1}\text{K}^{-1}, \ N_A = 6.023\times 10^{23} \)]

60.

KBr is doped with \( 10^{-5} \) mole percent of \( \mathrm{SrBr}_2 \). The number of cationic vacancies in \( 1 \ \text{g} \) of KBr crystal is ________ \( \times 10^{14} \). (Round off to the Nearest Integer) [Atomic Mass: \( \mathrm{K}: 39.1\,\text{u} \), \( \mathrm{Br}: 79.9\,\text{u} \), \( N_A = 6.023\times 10^{23} \)]

JEE Main 2021 17th March Evening Shift

Physics Chemistry Mathematics

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