IIT JEE Advanced 2024 Paper 2 IIT Official Answer Key || JEE Advanced 2024 Question Paper Solutions

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Q.7 T he compound(s) having peroxide linkage is(are)
(A) H2S2O7
(B) H2S2O8
(C) H2S2O5
(D) H2SO5

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An organic compound P with molecular formula C9H18O2 decolorizes bromine water and also shows
positive iodoform test. P on ozonolysis followed by treatment with H2O2 gives Q and R. While compound
Q shows positive iodoform test, compound R does not give positive iodoform test. Q and R on oxidation
with pyridinium chlorochromate (PCC) followed by heating give S and T, respectively. Both S and T show
positive iodoform test.
Complete copolymerization of 500 moles of Q and 500 moles of R gives one mole of a single acyclic
copolymer U.
[Given, atomic mass: H =1, C = 12, O =16]
Q.14 Sum of number of oxygen atoms in S and T is

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Q.12 A mong [Co(CN)4]4−, [Co(CO)3(NO)], XeF4, [PCl4]+, [PdCl4]2−, [ICl4]−, [Cu(CN)4]3− and
P4 the total number of species with tetrahedral geometry is

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“PARAGRAPH I”
An organic compound P with molecular formula C9H18O2 decolorizes bromine water and also shows
positive iodoform test. P on ozonolysis followed by treatment with H2O2 gives Q and R. While compound
Q shows positive iodoform test, compound R does not give positive iodoform test. Q and R on oxidation
with pyridinium chlorochromate (PCC) followed by heating give S and T, respectively. Both S and T show
positive iodoform test.
Complete copolymerization of 500 moles of Q and 500 moles of R gives one mole of a single acyclic
copolymer U.
[Given, atomic mass: H =1, C = 12, O =16]
Q.15 The molecular weight of U is

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“PARAGRAPH II”
When potassium iodide is added to an aqueous solution of potassium ferricyanide, a reversible reaction is
observed in which a complex P is formed. In a strong acidic medium, the equilibrium shifts completely
towards P. Addition of zinc chloride to P in a slightly acidic medium results in a sparingly soluble complex
Q.
Q.17 The number of zinc ions present in the molecular formula of Q is

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“PARAGRAPH II”
When potassium iodide is added to an aqueous solution of potassium ferricyanide, a reversible reaction is
observed in which a complex P is formed. In a strong acidic medium, the equilibrium shifts completely
towards P. Addition of zinc chloride to P in a slightly acidic medium results in a sparingly soluble complex
Q.
Q.16 The number of moles of potassium iodide required to produce two moles of P is

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Q.7 L et 1 1 1, , A B C be three points in the xy -plane. Suppose that the lines 11AC and 11BC are tangents to the curve 2 8yx= at 1A and 1, B respectively. If (0, 0) O = and 1 ( 4, 0), C =− then which of the following statements is (are) TRUE?
(A) The length of the line segment 1OA is 4 3
(B) The length of the line segment 11AB is 16
(C) The orthocenter of the triangle 1 1 1 A B C is (0, 0)
(D) The orthocenter of the triangle 1 1 1 A B C is (1, 0)

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Q.13 A n organic compound P having molecular formula C6H6O3 gives ferric chloride test and does not
have intramolecular hydrogen bond. The compound P reacts with 3 equivalents of NH2OH to
produce oxime Q. Treatment of P with excess methyl iodide in the presence of KOH produces
compound R as the major product. Reaction of R with excess iso-butylmagnesium bromide
followed by treatment with H3O+ gives compound S as the major product.
The total number of methyl (−CH3) group(s) in compound S is

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Q.8 T o form a complete monolayer of acetic acid on 1g of charcoal, 100 mL of 0.5 M acetic acid was
used. Some of the acetic acid remained unadsorbed. To neutralize the unadsorbed acetic acid, 40
mL of 1 M NaOH solution was required. If each molecule of acetic acid occupies P x 10−23 m2
surface area on charcoal, the value of P is
[Use given data: Surface area of charcoal = 1.5 x 102 m2g−1; Avogadro’s number (NA) = 6.0 x 1023
mol−1]

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Q.9 V essel-1 contains w2 g of a non-volatile solute X dissolved in w1 g of water. Vessel-2 contains w2 g
of another non-volatile solute Y dissolved in w1 g of water. Both the vessels are at the same
temperature and pressure. The molar mass of X is 80% of that of Y. The van’t Hoff factor for X is
1.2 times of that of Y for their respective concentrations.
The elevation of boiling point for solution in Vessel-1 is % of the solution in Vessel-2.

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IIT JEE Advanced 3 years Previous Question Papers with solutions (Maths, Physics, Chemistry)
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Q.4 T he species formed on fluorination of phosphorus pentachloride in a polar organic solvent are
(A) [PF4]+[PF6]− and [PCl4]+[PF6]− (B) [PCl4]+[PCl4F2]− and [PCl4]+[PF6]−
(C) PF3 and PCl3 (D) PF5 and PCl3

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Q.1 A ccording to Bohr’s model, the highest kinetic energy is associated with the electron in the
(A) first orbit of H atom
(B) first orbit of He+
(C) second orbit of He+
(D) second orbit of Li2+

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Q.3 A metal target with atomic number 𝑍 = 46 is bombarded with a high energy electron beam. The
emission of X-rays from the target is analyzed. The ratio 𝑟 of the wavelengths of the 𝐾𝛼-line and
the cut-off is found to be 𝑟 = 2. If the same electron beam bombards another metal target with
𝑍 = 41, the value of 𝑟 will be
(A) 2.53 (B) 1.27 (C) 2.24 (D) 1.58

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Q.6 A table tennis ball has radius (3/2) × 10−2 m and mass (22/7) × 10−3 kg. It is slowly pushed
down into a swimming pool to a depth of 𝑑 = 0.7 m below the water surface and then released
from rest. It emerges from the water surface at speed 𝑣, without getting wet, and rises up to a height
𝐻. Which of the following option(s) is(are) correct?
[Given: 𝜋 = 22/7, 𝑔 = 10 m s−2, density of water = 1 × 103 kg m−3,
viscosity of water = 1 × 10−3 Pa-s.]
(A) The work done in pushing the ball to the depth 𝑑 is 0.077 J.
(B) If we neglect the viscous force in water, then the speed 𝑣 = 7 m/s.
(C) If we neglect the viscous force in water, then the height 𝐻 = 1.4 m.
(D) The ratio of the magnitudes of the net force excluding the viscous force to the maximum
viscous force in water is 500/9.

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Q.5 A n aqueous solution of hydrazine (N2H4) is electrochemically oxidized by O2, thereby releasing
chemical energy in the form of electrical energy. One of the products generated from the
electrochemical reaction is N2(g).
Choose the correct statement(s) about the above process
(A) OH− ions react with N2H4 at the anode to form N2(g) and water, releasing 4 electrons to the
anode.
(B) At the cathode, N2H4 breaks to N2(g) and nascent hydrogen released at the electrode reacts
with oxygen to form water.
(C) At the cathode, molecular oxygen gets converted to OH−
.
(D) Oxides of nitrogen are major by-products of the electrochemical process.