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NTA JEE Mains 23rd Jan 2025 Shift 1 - Chemistry

For the following questions answer them individually

Given below are two statements:
Statement I: Fructose does not contain an aldehydic group but still reduces Tollen's reagent
Statement II: In the presence of base, fructose undergoes rearrangement to give glucose. In the light of the above statements, choose the correct answer from the options given below

$$FeO_{4}^{2-}\xrightarrow{+2.0_{V}} Fe^{3+}\xrightarrow{0.8_{V}} Fe^{2+}\xrightarrow{-0.5_{V}}Fe^{0}$$ In the above diagram, the standard electrode potentials are given in volts (over the arrow). The value of $$E_{FeO_{4}^{2-}/Fe^{2+}}^{0}$$ is

Given below are two statements:
Statement I: In Lassaigne's test, the covalent organic molecules are transformed into ionic compounds.
Statement II: The sodium fusion extract of an organic compound having N and S gives prussian blue colour with $$FeSO_{4}$$ and $$Na_{4}[Fe(CN)_{6}]$$ In the light of the above statements, choose
the correct answer from the options given below.

Propane molecule on chlorination under photochemical condition gives two di-chloro products, " x " and " y ". Amongst " x " and " y ", " x " is an optically active molecule. How many tri-chloro products (consider only structural isomers) will be obtained from " x " when it is further treated with chlorine under the photochemical condition?

$$CrCl_{3}\cdot xNH_{3}$$ can exist as a complex. 0.1 molal aqueous solution of this complex shows a depression in freezing point of $$0.558^{\circ}C$$. Assuming 100% ionisation of this complex and coordination number of Cr is 6 , the complex will be (Given $$K_{f}$$ = 1.86 K kg $$mol^{-1}$$)

Which of the following happens when $$NH_{4}OH$$ is added gradually to the solution containing 1 M $$A^{2+}$$ and $$1MB^{3+}$$ ions? Given : $$K_{sp}[A(OH)_{2}]= 9 \times 10^{-10}$$ and $$K_{sp}[B(OH)_{3}]= 27 \times 10^{-18}$$ at 298 K .

Ice at $$-5^{\circ}C$$ is heated to become vapor with temperature of $$110^{\circ}C$$ at atmospheric pressure. The entropy change associated with this process can be obtained from

The incorrect statement among the following is options .

Heat treatment of muscular pain involves radiation of wavelength of about 900 nm . Which spectral line of H atom is suitable for this? Given : Rydberg constant $$R_{H}=10^{5} cm^{-1}$$, $$h=6.6 \times 10^{-34}$$ Js,$$c= 3\times 10^{8}$$ m/s

The d- electronic configuration of an octahedral Co(II) complex having magnetic moment of 3.95 BM is:

The standard enthalpy and standard entropy of decomposition of $$N_{2}O_{4}$$ to $$NO_{2}$$ are 55.0 kJ $$mol^{-1}$$ and 175.0 J/K/mol respectively. The standard free energy change for this reaction at $$25^{\circ}C$$ in J $$mol^{-1}$$ is ______ (Nearest integer)

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For the thermal decomposition of $$N_{2}O_{5}(g)$$ at constant volume, the following table can be formed, for the reaction mentioned below. $$2 N_{2}O_{5}(g)\rightarrow 2 N_{2}O_{4}(g)+O_{2}(g)$$
$$x= .... \times 10^{-3}$$ atm [nearest integer] Given : Rate constant for the reaction is $$4.606 \times 10^{-2} s^{-1}.$$

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During " S " estimation, 160 mg of an organic compound gives 466 mg of barium sulphate. The percentage of Sulphur in the given compound is _______ %. (Given molar mass in $$gmol^{-1}$$ of Ba : 137, S : 32, O : 16)

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If 1 mM solution of ethylamine produces pH=9, then the ionization constant $$(K_{b})$$ of ethylamine is $$10^{-x}$$. The value of is ______ (nearest integer). [The degree of ionization of ethylamine can be neglected with respect to unity.]

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Consider the following sequence of reactions to produce major product (A)

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Molar mass of product (A) is $$gmol^{-1}$$. (Given molar mass in $$gmol^{-1}$$ of C : 12, H : 1, O : 16, Br : 80, N : 14, P : 31)

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