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Chemistry

The correct decreasing order of energy for the orbital having, following set of quantum numbers:
(A) \( n = 3, \, l = 0, \, m = 0 \)
(B) \( n = 4, \, l = 0, \, m = 0 \)
(C) \( n = 3, \, l = 1, \, m = 0 \)
(D) \( n = 3, \, l = 2, \, m = 1 \)
is:

32.

Match List -I and List-II

Choose the correct answer from the options given below:

33.

The plot of pH-metric titration of weak base \( \mathrm{NH_4OH} \) vs strong acid \( \mathrm{HCl} \) looks like:

34.

Given below are two statements:
Statement I: For KI, molar conductivity increases steeply with dilution.
Statement II: For carbonic acid, molar conductivity increases slowly with dilution.
In the light of the above statements, choose the correct answer from the options given below:

35.

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason(R).
Assertion (A) : Dissolved substance can be removed from a colloidal particles can pass through the parchment paper.
Reason(R): Particle in a true solution cannot pass through parchment paper but the colloidal particles can pass through the parchment paper.
In the light of the above statements, choose the correct answer from the options given below:

36.

Outermost electronic configurations of four elements A, B, C, D are given below:
(A) \( 3s^2 \) (B) \( 3s^2 3p^1 \) (C) \( 3s^2 3p^3 \) (D) \( 3s^2 3p^4 \)
The correct order of first ionization enthalpy for them is:

37.

An element \( A \) of group \( 1 \) shows similarity to an element \( B \) belonging to group \( 2 \). If \( A \) has maximum hydration enthalpy in group \( 1 \) then \( B \) is:

38.

Given below are two statements: one is labelled as Assertion \( (A) \) and the other is labelled as Reason \( (R) \).
Assertion \( (A) \): Boron is unable to form \( \mathrm{BF}_6^{3-} \)
Reason \( (R) \): Size of \( \mathrm{B} \) is very small.

39.

In neutral or alkaline solution, \( \mathrm{MnO}_4^{-} \) oxidises thiosulphate to:

40.

Low oxidation state of metals in their complexes are common when ligands:

41.

Given below are two statements:
Statement I: The non bio-degradable fly ash and slag from steel industry can be used by cement industry.
Statement II: The fuel obtained from plastic waste is lead free.
In the light of the above statements, choose the most appropriate answer from the options given below:

42.

The structure of \( A \) in the given reaction is:

43.

Major product ‘B’ of the following reaction sequence is:

44.

. Match List -I with List-II

Choose the correct answer from the options given below:

45.

. Match List-I with List-II

List -I (Polymer)	List-II (Monomer)
(A) Neoprene	(I) Acrylonitrile
(B) Teflon	(II) Chloroprene
(C) Acrilan	(III) Tetrafluoroethene
(D) Natural rubber	(IV) Isoprene

Choose the correct answer from the options given below:

46.

An organic compound ‘A’ contains nitrogen and chlorine. It dissolves readily in water to give a solution that turns litmus red. Titration of compound ‘A’ with standard base indicates that the molecular weight of ‘A’ is \(131 \pm 2\). When a sample of ‘A’ is treated with aq. \( \mathrm{NaOH} \), a liquid separate which contains \( \text{N} \) but not \( \text{Cl} \). Treatment of the obtained liquid with nitrous acid followed by phenol gives orange precipitate. The compound ‘A’ is:

47.

Match List-I with List-II

List-I	List-II
(A) Glucose + \( \mathrm{HI} \)	(I) Gluconic acid
(B) Glucose + \( \mathrm{Br}_2 \) water	(II) Glucose pentaacetate
(C) Glucose + acetic anhydride	(III) Saccharic acid
(D) Glucose + \( \mathrm{HNO}_3 \)	(IV) Hexane

Choose the correct answer from the options given below:

48.

Which of the following enhances the lathering property of soap?

49.

Match List -I with List-II

List-I (Mixture)	List-II (Purification Process)
(A) Chloroform and Aniline	(I) Steam distillation
(B) Benzoic acid and Napthalene	(II) Sublimation
(C) Water and Aniline	(III) Distillation
(D) Napthalene and Sodium chloride	(IV) Crystallisation

Choose the correct answer from the options given below:

50.

\( \mathrm{Fe^{3+}} \) cation gives a Prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of:

51.

The normality of \( \mathrm{H_2SO_4} \) in the solution obtained on mixing \( 100 \, \mathrm{mL} \) of \( 0.1 \, \mathrm{M} \) \( \mathrm{H_2SO_4} \) with \( 50 \, \mathrm{mL} \) of \( 0.1 \, \mathrm{M} \) \( \mathrm{NaOH} \) is _______ \( \times 10^{-1} \, \mathrm{N} \). (Nearest Integer)

52.

For a real gas at \( 25^\circ \mathrm{C} \) temperature and high pressure (\( 99 \) bar) the value of compressibility factor is \( 2 \), so the value of Vander Waal’s constant ‘b’ should be ______ \( \times 10^{-2} \, \mathrm{L \, mol^{-1}} \) (Nearest integer)
(Given \( R = 0.083 \, \mathrm{L \, bar \, K^{-1} \, mol^{-1}} \) )

53.

A gas (Molar mass \( = 280 \, \mathrm{g \, mol^{-1}} \)) was burnt in excess \( \mathrm{O_2} \) in a constant volume calorimeter and during combustion the temperature of calorimeter increased from \( 298.0 \, \mathrm{K} \) to \( 298.45 \, \mathrm{K} \). If the heat capacity of calorimeter is \( 2.5 \, \mathrm{kJ \, K^{-1}} \) and enthalpy of combustion of gas is \( 9 \, \mathrm{kJ \, mol^{-1}} \) then amount of gas burnt is ______ \( \mathrm{g} \). (Nearest integer)

54.

When a certain amount of solid A is dissolved in \( 100 \, \mathrm{g} \) of water at \( 25^\circ \mathrm{C} \) to make a dilute solution, the vapour pressure of the solution is reduced to one-half of that of pure water. The vapour pressure of pure water is \( 23.76 \, \mathrm{mm \, Hg} \). The number of moles of solute A added is ________. (Nearest Integer)

55.

\( [A] \quad\rightarrow [B] \)
Reactant Product
If formation of compound \( [B] \) follows the first order of kinetics and after \( 70 \) minutes the concentration of \( [A] \) was found to be half of its initial concentration. Then the rate constant of the reaction is \( x \times 10^{-6} \ \text{s}^{-1} \). The value of \( x \) is _______. (Nearest Integer).

56.

Among the following ores Bauxite, Siderite, Cuprite, Calamine, Haematite, Kaolinite, Malachite, Magnetite, Sphalerite, Limonite, Cryolite, the number of principal ores if iron is________.

57.

The oxidation state of manganese in the product obtained in a reaction of potassium permanganate and hydrogen peroxide in basic medium is_______.

58.

The number of molecule(s) or ion(s) from the following having non-planar structure is ______.
\( \mathrm{NO_3^-}, \ \mathrm{H_2O_2}, \ \mathrm{BF_3}, \ \mathrm{PCl_3}, \ \mathrm{XeF_4}, \ \mathrm{SF_4}, \ \mathrm{XeO_3}, \ \mathrm{PH_4^+}, \ \mathrm{SO_3}, \ \left[\mathrm{Al(OH)_4}\right]^- \)

59.

The spin only magnetic moment of the complex present in Fehling’s reagent is ______ B.M. (Nearest integer).

60.

In the above reaction, \( 5 \ \text{g} \) of toluene is converted into benzaldehyde with \( 92 \ \% \) yield. The amount of benzaldehyde produced is ______ \( \times 10^{-2} \ \text{g} \). (Nearest integer)

JEE Main 2022 27th July Evening Shift

Physics Chemistry Mathematics

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