JEE Main 2023 (Online) 24th January Morning Shift

Paper was held on
Tue, Jan 24, 2023 3:30 AM

## Chemistry

Which of the following is true about freons?

View Question Match List I with List II
.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:soli

View Question The primary and secondary valencies of cobalt respectively in $$\mathrm{[Co(NH_3)_5Cl]Cl_2}$$ are :

View Question 'A' and 'B' formed in the following set of reactions are :

View Question Decreasing order of the hydrogen bonding in following forms of water is correctly represented by
A. Liquid water
B. Ice

View Question Statement I : For colloidal particles, the values of colligative properties are of small order as compared to values sho

View Question Assertion A : Hydrolysis of an alkyl chloride is a slow reaction but in the presence of NaI, the rate of the hydrolysis

View Question An ammoniacal metal salt solution gives a brilliant red precipitate on addition of dimethylglyoxime. The metal ion is :

View Question Match List I with List II
.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:soli

View Question In the following given reaction, 'A' is

View Question 'R' formed in the following sequence of reactions is :

View Question Reaction of BeO with ammonia and hydrogen fluoride gives A which on thermal decomposition gives $$\mathrm{BeF_2}$$ and $

View Question The magnetic moment of a transition metal compound has been calculated to be 3.87 B.M. The metal ion is

View Question Compound (X) undergoes following sequence of reactions to give the Lactone (Y).

View Question In the depression of freezing point experiment
A. Vapour pressure of the solution is less than that of pure solvent
B. V

View Question Order of Covalent bond;
$$\mathrm{A.~KF > KI ; LiF > KF}$$
$$\mathrm{B.~KF KF}$$
$$\mathrm{C.~SnCl_4 > SnCl_2 ; CuCl >

View Question Given below are two statements:
Statement I : Noradrenaline is a neurotransmitter.
Statement II : Low level of noradrena

View Question It is observed that characteristic X-ray spectra of elements show regularity. When frequency to the power "n" i.e. $${v^

View Question Which of the Phosphorus oxoacid can create silver mirror from $$\mathrm{AgNO_3}$$ solution?

View Question Increasing order of stability of the resonance structures is :
Choose the correct answer from the options given below :

View Question For independent process at 300 K
.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-sty

View Question When $$\mathrm{Fe_{0.93}O}$$ is heated in presence of oxygen, it converts to $$\mathrm{Fe_2O_3}$$. The number of correct

View Question 5 g of NaOH was dissolved in deionized water to prepare a 450 mL stock solution. What volume (in mL) of this solution wo

View Question Uracil is a base present in RNA with the following structure. % of N in uracil is ___________
Given:
Molar mass N = 14

View Question Number of moles of AgCl formed in the following reaction is _____________

View Question The number of correct statement/s from the following is __________
A. Larger the activation energy, smaller is the value

View Question The dissociation constant of acetic acid is $$x\times10^{-5}$$. When 25 mL of 0.2 $$\mathrm{M~CH_3COONa}$$ solution is m

View Question At 298 K, a 1 litre solution containing 10 mmol of $$\mathrm{C{r_2}O_7^{2 - }}$$ and 100 mmol of $$\mathrm{Cr^{3+}}$$ sh

View Question The d-electronic configuration of $$\mathrm{[CoCl_4]^{2-}}$$ in tetrahedral crystal field in $${e^mt_2^n}$$. Sum of "m"

View Question If wavelength of the first line of the Paschen series of hydrogen atom is 720 nm, then the wavelength of the second line

View Question ## Mathematics

Let a tangent to the curve $$\mathrm{y^2=24x}$$ meet the curve $$xy = 2$$ at the points A and B. Then the mid points of

View Question Let $$\mathrm{p,q\in\mathbb{R}}$$ and $${\left( {1 - \sqrt 3 i} \right)^{200}} = {2^{199}}(p + iq),i = \sqrt { - 1} $$ t

View Question Let N denote the number that turns up when a fair die is rolled. If the probability that the system of equations
$$x + y

View Question The relation $$\mathrm{R = \{ (a,b):\gcd (a,b) = 1,2a \ne b,a,b \in \mathbb{Z}\}}$$ is :

View Question $$\mathop {\lim }\limits_{t \to 0} {\left( {{1^{{1 \over {{{\sin }^2}t}}}} + {2^{{1 \over {{{\sin }^2}t}}}}\, + \,...\,

View Question $${\tan ^{ - 1}}\left( {{{1 + \sqrt 3 } \over {3 + \sqrt 3 }}} \right) + {\sec ^{ - 1}}\left( {\sqrt {{{8 + 4\sqrt 3 } \

View Question The value of $$\sum\limits_{r = 0}^{22} {{}^{22}{C_r}{}^{23}{C_r}} $$ is

View Question Let $$y = y(x)$$ be the solution of the differential equation $${x^3}dy + (xy - 1)dx = 0,x > 0,y\left( {{1 \over 2}} \ri

View Question Let $$\Omega$$ be the sample space and $$\mathrm{A \subseteq \Omega}$$ be an event.
Given below are two statements :
(S1

View Question The distance of the point (7, $$-$$3, $$-$$4) from the plane passing through the points (2, $$-$$3, 1), ($$-$$1, 1, $$-$

View Question The compound statement $$\left( { \sim (P \wedge Q)} \right) \vee \left( {( \sim P) \wedge Q} \right) \Rightarrow \left(

View Question The area enclosed by the curves $${y^2} + 4x = 4$$ and $$y - 2x = 2$$ is :

View Question The equation $${x^2} - 4x + [x] + 3 = x[x]$$, where $$[x]$$ denotes the greatest integer function, has :

View Question If A and B are two non-zero n $$\times$$ n matrices such that $$\mathrm{A^2+B=A^2B}$$, then :

View Question The distance of the point ($$-1,9,-16$$) from the plane $$2x+3y-z=5$$ measured parallel to the line $${{x + 4} \over 3}

View Question For three positive integers p, q, r, $${x^{p{q^2}}} = {y^{qr}} = {z^{{p^2}r}}$$ and r = pq + 1 such that 3, 3 log$$_yx$$

View Question Let PQR be a triangle. The points A, B and C are on the sides QR, RP and PQ respectively such that $${{QA} \over {AR}} =

View Question Let $$f(x) = \left\{ {\matrix{
{{x^2}\sin \left( {{1 \over x}} \right)} & {,\,x \ne 0} \cr
0 & {,\,x = 0} \cr

View Question Let $$\overrightarrow u = \widehat i - \widehat j - 2\widehat k,\overrightarrow v = 2\widehat i + \widehat j - \wideha

View Question Let $$\alpha$$ be a root of the equation $$(a - c){x^2} + (b - a)x + (c - b) = 0$$ where a, b, c are distinct real numbe

View Question Let $$\lambda \in \mathbb{R}$$ and let the equation E be $$|x{|^2} - 2|x| + |\lambda - 3| = 0$$. Then the largest eleme

View Question The shortest distance between the lines $${{x - 2} \over 3} = {{y + 1} \over 2} = {{z - 6} \over 2}$$ and $${{x - 6} \ov

View Question The 4$$^\mathrm{th}$$ term of GP is 500 and its common ratio is $$\frac{1}{m},m\in\mathbb{N}$$. Let $$\mathrm{S_n}$$ den

View Question Let C be the largest circle centred at (2, 0) and inscribed in the ellipse $${{{x^2}} \over {36}} + {{{y^2}} \over {16}}

View Question A boy needs to select five courses from 12 available courses, out of which 5 courses are language courses. If he can cho

View Question The value of $$12\int\limits_0^3 {\left| {{x^2} - 3x + 2} \right|dx} $$ is ____________

View Question Let a tangent to the curve $$9{x^2} + 16{y^2} = 144$$ intersect the coordinate axes at the points A and B. Then, the min

View Question Suppose $$\sum\limits_{r = 0}^{2023} {{r^2}{}~^{2023}{C_r} = 2023 \times \alpha \times {2^{2022}}} $$. Then the value o

View Question The value of $${8 \over \pi }\int\limits_0^{{\pi \over 2}} {{{{{(\cos x)}^{2023}}} \over {{{(\sin x)}^{2023}} + {{(\cos

View Question The number of 9 digit numbers, that can be formed using all the digits of the number 123412341 so that the even digits o

View Question ## Physics

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : Phot

View Question As per given figure, a weightless pulley P is attached on a double inclined frictionless surfaces. The tension in the st

View Question Given below are two statements :
Statement I : If the Brewster's angle for the light propagating from air to glass is $$

View Question A 100 m long wire having cross-sectional area $$\mathrm{6.25\times10^{-4}~m^2}$$ and Young's modulus is $$\mathrm{10^{10

View Question The weight of a body at the surface of earth is 18 N. The weight of the body at an altitude of 3200 km above the earth's

View Question A modulating signal is a square wave, as shown in the figure.
If the carrier wave is given as $$\mathrm{c(t) = 2\sin(8\

View Question From the photoelectric effect experiment, following observations are made. Identify which of these are correct.
A. The s

View Question Two long straight wires P and Q carrying equal current 10A each were kept parallel to each other at 5 cm distance. Magni

View Question A circular loop of radius $$r$$ is carrying current I A. The ratio of magnetic field at the center of circular loop and

View Question If two charges q$$_1$$ and q$$_2$$ are separated with distance 'd' and placed in a medium of dielectric constant K. What

View Question A conducting circular loop of radius $$\frac{10}{\sqrt\pi}$$ cm is placed perpendicular to a uniform magnetic field of 0

View Question Consider the following radioactive decay process
$$_{84}^{218}A\buildrel \alpha \over
\longrightarrow {A_1}\buildrel {

View Question 1 g of a liquid is converted to vapour at 3 $$\times$$ 10$$^5$$ Pa pressure. If 10% of the heat supplied is used for inc

View Question As shown in the figure, a network of resistors is connected to a battery of 24V with an internal resistance of 3 $$\Omeg

View Question A travelling wave is described by the equation
$$y(x,t) = [0.05\sin (8x - 4t)]$$ m
The velocity of the wave is : [all th

View Question The maximum vertical height to which a man can throw a ball is 136 m. The maximum horizontal distance upto which he can

View Question Given below are two statements :
Statement I : The temperature of a gas is $$-73^\circ$$C. When the gas is heated to $$5

View Question Match List I with List II
.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:soli

View Question Given below are two statements :
Statement I : An elevator can go up or down with uniform speed when its weight is balan

View Question In $$\overrightarrow E $$ and $$\overrightarrow K $$ represent electric field and propagation vectors of the EM waves in

View Question In the circuit shown in the figure, the ratio of the quality factor and the band width is ___________ s.

View Question Assume that protons and neutrons have equal masses. Mass of a nucleon is $$1.6\times10^{-27}$$ kg and radius of nucleus

View Question A hollow cylindrical conductor has length of 3.14 m, while its inner and outer diameters are 4 mm and 8 mm respectively.

View Question
A block of a mass 2 kg is attached with two identical springs of spring constant 20 N/m each. The block is placed on a

View Question Vectors $$a\widehat i + b\widehat j + \widehat k$$ and $$2\widehat i - 3\widehat j + 4\widehat k$$ are perpendicular to

View Question A hole is drilled in a metal sheet. At $$\mathrm{27^\circ
C}$$, the diameter of hole is 5 cm. When the sheet is heated

View Question Solid sphere A is rotating about an axis PQ. If the radius of the sphere is 5 cm then its radius of gyration about PQ wi

View Question As shown in the figure, a combination of a thin plano concave lens and a thin plano convex lens is used to image an obje

View Question A stream of a positively charged particles having $${q \over m} = 2 \times {10^{11}}{C \over {kg}}$$ and velocity $${\ov

View Question A spherical body of mass 2 kg starting from rest acquires a kinetic energy of 10000 J at the end of $$\mathrm{5^{th}}$$

View Question