NTA JEE Mains 22nd Jan 2026 Shift 1

Instructions

For the following questions answer them individually

NTA JEE Mains 22nd Jan 2026 Shift 1 - Question 71


Dissociation of a gas $$A_{2}$$ takes place according to the following chemical reaction.
At equilibrium, the total pressure is 1 bar at 300K.

$$A_{2}(g)\rightleftharpoons 2A(g)$$

TI1e standard Gibbs energy of formation of the involved substances has been
provided below:

table

The degree of dissociation of $$A_{2} (g)$$ is given by $$(x\times10^{-2})^{1/2} $$ where $$x$$ =
_____ . (Nearest integer).
[Given: $$R=8 J \text{ }mol^{-1}K^{-1},\log{2}=0.3010, \log {3}=0.48]$$
Assume degree of dissociation is not negligible.

Backspace
789
456
123
0.-
Clear All

NTA JEE Mains 22nd Jan 2026 Shift 1 - Question 72


The temperature at which the rate constants of the given below two gaseous reactions become equal is ______ K. (Nearest integer)

$$X \rightarrow Y $$ $$ k_{1}=10^{6}e^{\frac{-30000}{T}}$$

$$P \rightarrow Q $$ $$ k_{2}=10^{4}e^{\frac{-24000}{T}}$$

Given: ln 10 = 2.303

Backspace
789
456
123
0.-
Clear All

NTA JEE Mains 22nd Jan 2026 Shift 1 - Question 73


Consider the following electrochemical cell at 298K

$$ Pt \mid HSnO_2{^-}(aq)\mid Sn(OH)_6{^{2-}}(aq)\mid OH^{-}(aq)\mid Bi_{2}O_{3}(s)\mid Bi(s)$$.

If the reaction quotient at a given time is $$10^{6}$$, then the cell $$EMF (E_{cell})$$ is _____ $$\times 10^{-1} V$$ (Nearest integer).

Given the standard half-cell reduction potential as

$$E_{Bi_{2}O_{3}/Hi,OH^{-}}^{o}=-0.44V \text{ and }E_{Sn(OH)_6^{2-}/HSnO_2^{-}, OH^{-}}^{o}=-0.90V$$

Backspace
789
456
123
0.-
Clear All

NTA JEE Mains 22nd Jan 2026 Shift 1 - Question 74


Sodium fusion extract of an organic compound (Y) with $$CHCl_{3}$$ and chlorine water gives violet color to the $$CHCl_{3} $$ layer. 0.15g of $$(Y)$$ gave 0.12g of the silver halide precipitate in Carius method. Percentage of halogen in the compound $$(Y)$$ is _______ . (Nearest integer)

(Given : molar mass g $$mol^{-}$$ C : 12 , H : 1, Cl : 35.5, Br : 80 , I : 127)

Backspace
789
456
123
0.-
Clear All

NTA JEE Mains 22nd Jan 2026 Shift 1 - Question 75


The cycloalkene $$(X)$$ on bromination consumes one mole of bromine per mole of $$(X)$$ and gives the product $$(Y)$$ in which $$C:Br$$ ratio is 3: 1. The percentage of bromine in the product $$(Y)$$ is _____ %. (Nearest integer)

( Given: molar mass in g $$mol^{-} H: 1, C: 12 , 0: 16, Br: 80$$)

Backspace
789
456
123
0.-
Clear All
cracku

Boost your Prep!

Download App