NTA JEE Main 26th June 2022 Shift 1 - Chemistry

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 32

If the radius of the $$3^{rd}$$ Bohr's orbit of hydrogen atom is $$r_3$$ and the radius of $$4^{th}$$ Bohr's orbit is $$r_4$$. Then

NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 33

Consider the ions/molecule $$O_2^+, O_2, O_2^-, O_2^{2-}$$. For increasing bond order the correct option is

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 34

An evacuated glass vessel weighs $$40.0$$ g when empty, $$135.0$$ g when filled with a liquid of density $$0.95$$ g mL$$^{-1}$$ and $$40.5$$ g when filled with an ideal gas at $$0.82$$ atm at $$250$$ K. The molar mass of the gas in g mol$$^{-1}$$ is : (Given : $$R = 0.082$$ L atm K$$^{-1}$$ mol$$^{-1}$$)

NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 36

Given below are two statements :
Statement I : In 'Lassaigne's Test', when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed.
Statement II : If both nitrogen and sulphur are present in an organic compound, then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to give NaCN and $$Na_2S$$.
In the light of the above statements, choose the most appropriate answer from the options given below

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 38

The $$\left(\frac{\partial E}{\partial T}\right)_P$$ of different types of half cells are as follows :
A: $$1 \times 10^{-4}$$, B: $$2 \times 10^{-4}$$, C: $$0.1 \times 10^{-4}$$, D: $$0.2 \times 10^{-4}$$
(Where E is the electromotive force). Which of the above half cells would be preferred to be used as reference electrode

NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 39

Given below are two statements :
Statement I : According to the Ellingham diagram, any metal oxide with higher $$\Delta G°$$ is more stable than the one with lower $$\Delta G°$$.
Statement II : The metal involved in the formation of oxide placed lower in the Ellingham diagram can reduce the oxide of a metal placed higher in the diagram.
In the light of the above statements, choose the most appropriate answer from the options given below

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 40

Consider the following reaction :
$$2HSO_4^-(aq) \xrightarrow[(2) Hydrolysis]{(1) Electrolysis \atop } 2HSO_4^- + 2H^+ + A$$
The dihedral angle in product $$A$$ in its solid phase at $$110$$ K is

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 48

Which of the following sets are correct regarding polymer:
(A) Copolymer : Buna-S
(B) Condensation polymer : Nylon-6, 6
(C) Fibres : Nylon-6, 6
(D) Thermosetting polymer : Terylene
(E) Homopolymers : Buna-N
Choose the correct answer from given options below

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 50

Which statement is not true with respect to nitrate ion test?

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 52

For complete combustion of methanol
$$CH_3OH(l) + \frac{3}{2}O_2(g) \to CO_2(g) + 2H_2O(l)$$
the amount of heat produced as measured by bomb calorimeter is $$726$$ kJ mol$$^{-1}$$ at $$27°$$C. The enthalpy of combustion for the reaction is $$-x$$ kJ mol$$^{-1}$$, where $$x$$ is ______
(Given : $$R = 8.3$$ J K$$^{-1}$$ mol$$^{-1}$$)

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 53

$$50$$ mL of $$0.1$$ M $$CH_3COOH$$ is being titrated against $$0.1$$ M NaOH. When $$25$$ mL of NaOH has been added, the pH of the solution will be ______ $$\times 10^{-2}$$. (Nearest integer)
(Given : $$pK_a(CH_3COOH) = 4.76$$)

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 54

Compound 'P' on nitration with dil. $$HNO_3$$ yields two isomers (A) and (B). These isomers can be separated by steam distillations. Isomers (A) and (B) show the intramolecular and intermolecular hydrogen bonding respectively. Compound (P) on reaction with conc. $$HNO_3$$ yields a yellow compound 'C', a strong acid. The number of oxygen atoms is present in compound 'C'

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 55

A $$0.5$$ percent solution of potassium chloride was found to freeze at $$-0.24°$$C. The percentage dissociation of potassium chloride is (Nearest integer)
(Molal depression constant for water is $$1.80$$ K kg mol$$^{-1}$$ and molar mass of KCl is $$74.6$$ g mol$$^{-1}$$)

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 56

A flask is filled with equal moles of A and B. The half lives of A and B are $$100$$ s and $$50$$ s respectively and are independent of the initial concentration. The time required for the concentration of A to be four times that of B is ______ s.
(Given : $$\ln 2 = 0.693$$)

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 57

$$2.0$$ g of $$H_2$$ gas is adsorbed on $$2.5$$ g of platinum powder at $$300$$ K and $$1$$ bar pressure. The volume of the gas adsorbed per gram of the adsorbent is ______ mL
(Given : $$R = 0.083$$ L bar K$$^{-1}$$ mol$$^{-1}$$)

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NTA JEE Main 26th June 2022 Shift 1 - Chemistry - Question 59

The spin-only magnetic moment value of an octahedral complex among $$CoCl_3 \cdot 4NH_3$$, $$NiCl_2 \cdot 6H_2O$$ and $$PtCl_4 \cdot 2HCl$$, which upon reaction with excess of $$AgNO_3$$ gives 2 moles of AgCl is ______ B.M. (Nearest Integer)

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