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Chemistry

Match List-I with List-II:

List-I Species	List-II Geometry/Shape
A. \( \mathrm{H_3O^+} \)	\( \text{I}. \) Tetrahedral
B. Acetylide anion	\( \text{II}. \) Linear
C. \( \mathrm{NH_4^+} \)	\( \text{III}. \) Pyramidal
D. \( \mathrm{ClO_2^-} \)	\( \text{IV}. \) Bent

Choose the correct answer from the options given below:

32.

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: In the photoelectric effect, the electrons are ejected from the metal surface as soon as the beam of light of frequency greater than threshold frequency strikes the surface.
Reason R: When the photon of any energy strikes an electron in the atom, transfer of energy from the photon to the electron takes place.
In the light of the above statements, choose the most appropriate answer from the options given below:

33.

‘A’ and ‘B’ in the above reactions are:

34.

Find out the correct statement from the options given below for the above \( 2 \) reactions.

35.

Given below are two statements:
Statement-I: Methane and steam passed over a heated Ni catalyst produces hydrogen gas.
Statement-II: Sodium nitrite reacts with \( \mathrm{NH_4Cl} \) to give \( \mathrm{H_2O} \), \( \mathrm{N_2} \) and NaCl.
In the light of the above statements, choose the most appropriate answer from the options given below:

36.

Which of the following complex has a possibility to exist as meridional isomer?

37.

For elements \( \mathrm{B}, \mathrm{C}, \mathrm{N}, \mathrm{Li}, \mathrm{Be}, \mathrm{O} \) and \( \mathrm{F} \), the correct order of first ionization enthalpy is:

38.

The complex that dissolves in water is:

39.

\( 25 \, \mathrm{mL} \) of silver nitrate solution \( (1 \, \mathrm{M}) \) is added dropwise to \( 25 \, \mathrm{mL} \) of potassium iodide \( (1.05 \, \mathrm{M}) \) solution. The ion(s) present in very small quantity in the solution is/are:

40.

o-Phenylenediamine \( \xrightarrow{\mathrm{HNO_2}} \) ‘\( X \)’ (Major Product) ‘\( X \)’ is:

41.

Match List-I with List-II:

List-I	List-II
A. K	I. Thermonuclear reactions
B. KCl	II. Fertilizer
C. KOH	III. Sodium potassium pump
D. Li	IV. Absorbent of \( \mathrm{CO_2} \)

Choose the correct answer from the options given below:

42.

The polymer \( X \) - consists of linear molecules and is closely packed. It is prepared in the presence of triethylaluminium and titanium tetrachloride under low pressure. The polymer \( X \) is:

43.

The set which does not have ambidentate ligand(s) is:

44.

Arrange the following compounds in increasing order of rate of aromatic electrophilic substitution reaction

45.

L-isomer of tetrose \( X(\mathrm{C_4H_8O_4}) \) gives positive Schiff’s test and has two chiral carbons. On acetylation, ‘X’ yields triacetate. ‘X’ also undergoes following reactions
\(\text{'A'} \xleftarrow{\text{HNO}_3} \text{'X'} \xrightarrow{\text{NaBH}_4} \text{'B' (Chiral compound)}\)
‘X’ is:

46.

Given below are two statements:
Statement I: If BOD is \( 4 \, \text{ppm} \) and dissolved oxygen is \( 8 \, \text{ppm} \), then it is a good quality water.
Statement II: If the concentration of zinc and nitrate salts are \( 5 \, \text{ppm} \) each, then it can be a good quality water.
In the light of the above statements, choose the most appropriate answer from the options given below:

47.

Thin layer chromatography of a mixture shows the following observation:

The correct order of elution in the silica gel column chromatography is:

48.

For compound having the formula \( \mathrm{GaAlCl_4} \), the correct option from the following is:

49.

In the extraction process of copper, the product obtained after carrying out the reactions
(i) \( 2\mathrm{Cu_2S} + 3\mathrm{O_2} \rightarrow 2\mathrm{Cu_2O} + 2\mathrm{SO_2} \) (ii) \( 2\mathrm{Cu_2O} + \mathrm{Cu_2S} \rightarrow 6\mathrm{Cu} + \mathrm{SO_2} \)
is called:

50.

When a solution of mixture having two inorganic salts was treated with freshly prepared ferrous sulphate in acidic medium, a dark brown ring was formed whereas on treatment with neutral \( \mathrm{FeCl_3} \), it gave deep red colour which disappeared on boiling and a brown red ppt was formed. The mixture contains:

51.

In an electrochemical reaction of lead, at standard temperature, if \( E^\circ_{(\mathrm{Pb^{2+}/Pb)}} = m \) Volt and \( E^\circ_{(\mathrm{Pb^{4+}/Pb)}} = n \) Volt, then the value of \( E^\circ_{(\mathrm{Pb^{2+}/Pb^{4+}})} \) is given by \( m - xn \). The value of \( x \) is _______. (Nearest integer)

52.

The number of hyperconjugation structures involved to stabilize carbocation formed in the above reaction is _________.

53.

A mixture of \( 1 \) mole of \( \mathrm{H_2O} \) and \( 1 \) mole of \( \mathrm{CO} \) is taken in a \( 10 \) litre container and heated to \( 725 \ \mathrm{K} \). At equilibrium \( 40\% \) of water by mass reacts with carbon monoxide according to the equation: \( \mathrm{CO(g)} + \mathrm{H_2O(g)} \rightleftharpoons \mathrm{CO_2(g)} + \mathrm{H_2(g)} \). The equilibrium constant \( K_c \times 10^2 \) for the reaction is ______. (Nearest integer)

54.

A solution of sugar is obtained by mixing \( 200 \, \text{g} \) of its \( 25\% \) solution and \( 500 \, \text{g} \) of its \( 40\% \) solution (both by mass). The mass percentage of the resulting sugar solution is ______. (Nearest integer)

55.

An atomic substance A of molar mass \( 12 \, \text{g mol}^{-1} \) has a cubic crystal structure with edge length of \( 300 \, \text{pm} \). The no. of atoms present in one unit cell of A is ________ . (Nearest integer)
Given the density of A is \( 3.0 \, \text{g mL}^{-1} \) and \( N_A = 6.02 \times 10^{23} \, \text{mol}^{-1} \)

56.

\( \text{KClO}_3 + 6\text{FeSO}_4 + 3\text{H}_2\text{SO}_4 \rightarrow \text{KCl} + 3\text{Fe}_2(\text{SO}_4)_3 + 3\text{H}_2\text{O} \)
The above reaction was studied at \( 300 \, \text{K} \) by monitoring the concentration of \( \text{FeSO}_4 \) in which initial concentration was \( 10 \, \text{M} \) and after half an hour became \( 8.8 \, \text{M} \). The rate of production of \( \text{Fe}_2(\text{SO}_4)_3 \) is ______ \( \times 10^{-6} \, \text{mol L}^{-1} \text{s}^{-1} \). (Nearest integer)

57.

The ratio of spin-only magnetic moment values \( \mu_{\text{eff}}[\text{Cr(CN)}_6]^{3-} / \mu_{\text{eff}}[\text{Cr(H}_2\text{O)}_6]^{3+} \) is ______ .

58.

Solid fuel used in rocket is a mixture of \( \text{Fe}_2\text{O}_3 \) and Al (in ratio \( 1:2 \)). The heat evolved (\( \text{kJ} \)) per gram of the mixture is ______ (Nearest integer)
Given: \( \Delta H_f^\ominus(\text{Al}_2\text{O}_3) = -1700 \, \text{kJ mol}^{-1} \)
\( \Delta H_f^\ominus(\text{Fe}_2\text{O}_3) = -840 \, \text{kJ mol}^{-1} \)
Molar mass of Fe, Al and O are \( 56 \), \( 27 \) and \( 16 \, \text{g mol}^{-1} \) respectively.

59.

\( 0.004 \, \text{M} \) \( \text{K}_2\text{SO}_4 \) solution is isotonic with \( 0.01 \, \text{M} \) glucose solution. Percentage dissociation of \( \text{K}_2\text{SO}_4 \) is ______ (Nearest integer)

60.

The ratio \( x/y \) on completion of the above reaction is ________ .

JEE Main 2023 11th April Morning Shift

Physics Chemistry Mathematics

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