JEE Main 2024 · 27 Jan 2024 · Shift 2

Q1.The equation of state of a real gas is given by $\left(\mathrm{P}+\frac{\mathrm{a}}{{\mathrm{V}}^2}\right)(\mathrm{V}-\mathrm{b})=\mathrm{RT}$, where $\mathrm{P},\mathrm{V}$ and T are pressure, volume and temperature respectively and R is the universal gas constant. The dime …

Q2.Wheatstone bridge principle is used to measure the specific resistance (${\mathrm{S}}_1$) of given wire, having length L, radius r. If X is the resistance of wire, then specific resistance is: ${\mathrm{S}}_1=\mathrm{X}\left(\frac{\pi {\mathrm{r}}^2}{\mathrm{L}}\right)$. If …

Q3.Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): The angular speed of the moon in its orbit about the earth is more than the angular speed of the earth in its orbit about the sun.
Reason (R): The moon takes l …

Q4.Given below are two statements:
Statement (I): The limiting force of static friction depends on the area of contact and independent of materials.
Statement (II): The limiting force of kinetic friction is independent of the area of contact and depends on materials.
In the light of …

Q5.The truth table of the given circuit diagram is :

Q6.A current of $200\mu \mathrm{A}$ deflects the coil of a moving coil galvanometer through $60^{\circ }$. The current to cause deflection through $\frac{\pi }{10}$ radian is :

Q7.The atomic mass of ${}_6{\mathrm{C}}^{12}$ is 12.000000 u and that of ${}_6{\mathrm{C}}^{13}$ is 13.003354 u. The required energy to remove a neutron from ${}_6{\mathrm{C}}^{13}$, if mass of neutron is 1.008665 u, will be :

Q8.A ball suspended by a thread swings in a vertical plane so that its magnitude of acceleration in the extreme position and lowest position are equal. The angle ($\theta$) of thread deflection in the extreme position will be :

Q9.Three voltmeters, all having different internal resistances are joined as shown in figure. When some potential difference is applied across A and B, their readings are $V_1,V_2$ and $V_3$. Choose the correct option.

Q10.The total kinetic energy of 1 mole of oxygen at $27^{\circ }\mathrm{C}$ is:
[Use universal gas constant $(\mathrm{R})=8.31\mathrm{J}/$ mole K]

Q11.Given below are two statements: one is labelled as Assertion(A) and the other is labelled as Reason (R).
Assertion (A): In Vernier calliper if positive zero error exists, then while taking measurements, the reading taken will be more than the actual reading.
Reason (R): The zero …

Q12.Primary side of a transformer is connected to $230\mathrm{V},50\mathrm{Hz}$ supply. Turns ratio of primary to secondary winding is $10:1$. Load resistance connected to secondary side is $46\Omega$. The power consumed in it is :

Q13.During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio of $\frac{{\mathrm{C}}_{\mathrm{p}}}{{\mathrm{C}}_{\mathrm{v}}}$ for the gas is :

Q14.The threshold frequency of a metal with work function 6.63 eV is :

Q15.When a polaroid sheet is rotated between two crossed polaroids then the transmitted light intensity will be maximum for a rotation of :

Q16.An object is placed in a medium of refractive index 3. An electromagnetic wave of intensity $6\times 10^8\mathrm{W}/{\mathrm{m}}^2$ falls normally on the object and it is absorbed completely. The radiation pressure on the object would be (speed of light in free space …

Q17.Given below are two statements : one is labelled a Assertion (A) and the other is labelled as Reason(R)
Assertion (A) : Work done by electric field on moving a positive charge on an equipotential surface is always zero.
Reason (R) : Electric lines of forces are always perpendicul …

Q18.A heavy iron bar of weight 12 kg is having its one end on the ground and the other on the shoulder of a man. The rod makes an angle $60^{\circ }$ with the horizontal, the weight experienced by the man is :

Q19.The magnetic field at the centre of a wire loop formed by two semicircular wires of radii ${\mathrm{R}}_1=2\pi \mathrm{m}$ and $R_2=4\pi \mathrm{m}$ carrying current $\mathrm{I}=4\mathrm{A}$ as per figure given below is $\alpha \times 10^{-7}\mathrm{T}$. The val …

Q20.Two charges of $-4\mu \mathrm{C}$ and $+4\mu \mathrm{C}$ are placed at the points $\mathrm{A}(1,0,4)\mathrm{m}$ and $\mathrm{B}(2,-1,5)\mathrm{m}$ located in an electric field $\overrightarrow{\mathrm{E}}=0.20\hat{\mathrm{i}}\mathrm{V}/\mathrm{cm}$. The magnitud …

Q21.A closed organ pipe 150 cm long gives 7 beats per second with an open organ pipe of length 350 cm , both vibrating in fundamental mode. The velocity of sound is ____ $\mathrm{m}/\mathrm{s}$.

Q22.A body falling under gravity covers two points A and B separated by 80 m in 2 s . The distance of upper point A from the starting point is ____ m (use $\mathrm{g}=10{\mathrm{ms}}^{-2}$)

Q23.The reading of pressure metre attached with a closed pipe is $4.5\times 10^4\mathrm{N}/{\mathrm{m}}^2$. On opening the valve, water starts flowing and the reading of pressure metre falls to $2.0\times 10^4\mathrm{N}/{\mathrm{m}}^2$. The velocity of water is found to …

Q24.A ring and a solid sphere roll down the same inclined plane without slipping. They start from rest. The radii of both bodies are identical and the ratio of their kinetic energies is $\frac{7}{x}$ where $x$ is ____.

Q25.A parallel beam of monochromatic light of wavelength $5000\mathring{A}$ is incident normally on a single narrow slit of width 0.001 mm. The light is focused by convex lens on screen, placed on its focal plane. The first minima will be formed for the angle of diffraction of ____ (degree).

Q26.The electric potential at the surface of an atomic nucleus ($\mathrm{z}=50$) of radius $9\times 10^{-13}\mathrm{cm}$ is ____ $\times 10^6\mathrm{V}$.

Q27.If Rydberg's constant is $R$, the longest wavelength of radiation in Paschen series will be $\frac{\alpha }{7\mathrm{R}}$, where $\alpha =$ ____.

Q28.A series $LCR$ circuit with $L=\frac{100}{\pi }\mathrm{mH}$, $C=\frac{10^{-3}}{\pi }\mathrm{F}$ and $\mathrm{R}=10\Omega$, is connected across an ac source of $220\mathrm{V}$, $50\mathrm{Hz}$ supply. The power factor of the circuit would be ____.

Q29.Given below are two statements:
Assertion (A): The property of a body, by virtue of which it tends to regain its original shape when the external force is removed, is Elasticity.
Reason (R): The restoring force depends upon the bonded inter-atomic and inter-molecular force of t …

Q1.The order of relative stability of the contributing structure is:

Choose the correct answer from the options given below:

Q2.Which among the following halide/s will not show S_N1 reaction:
(A) H₂C=CH-CH₂Cl
(B) CH₃-CH=CH-Cl
(C) (see structure)
(D) (see structure)

Choose the most appropriate answer from the options given below:

Q3.Which of the following statements is not correct about rusting of iron?

Q4.Given below are two statements:

Statement (I): In the Lanthanoids, the formation of Ce⁺⁴ is favoured by its noble gas configuration.

Statement (II): Ce⁺⁴ is a strong oxidant reverting to the common +3 state.

In the light of the above statements, choose the most appropriate ans …

Q5.Choose the correct option having all the elements with d¹⁰ electronic configuration from the following:

Q6.Phenolic group can be identified by a positive:

Q7.The molecular formula of second homologue in the homologous series of mono carboxylic acids is ______.

Q8.The technique used for purification of steam volatile water immiscible substance is:

Q9.The final product A, formed in the following reaction sequence is:

Q10.Match List-I with List-II.

List - I (Reaction)
List - II (Reagent(s))

Choose the correct answer from the options given below:

Q11.Major product formed in the following reaction is a mixture of:

Q12.Bond line formula of HOCH(CN)₂ is:

Q13.Given below are two statements:

Statement (I) : Oxygen being the first member of group 16 exhibits only -2 oxidation state.
Statement (II) : Down the group 16 stability of +4 oxidation state decreases and +6 oxidation state increases.

In the light of the above statements, choos …

Q14.Identify from the following species in which ${\mathrm{d}}^2{\mathrm{sp}}^3$ hybridization is shown by central atom:

Q15.Identify B formed in the reaction.

Q16.The quantity which changes with temperature is:

Q17.Which structure of protein remains intact after coagulation of egg white on boiling?

Q18.Which of the following cannot function as an oxidising agent?

Q19.The incorrect statement regarding conformations of ethane is:

Q20.Identity the incorrect pair from the following:

Q21.Total number of ions from the following with noble gas configuration is ____. …

Q22.The number of non-polar molecules from the following is ____
$\mathrm{HF},{\mathrm{H}}_2\mathrm{O},{\mathrm{SO}}_2,{\mathrm{H}}_2,{\mathrm{CO}}_2,{\mathrm{CH}}_4,{\mathrm{NH}}_3,\mathrm{HCl},{\mathrm{CHCl}}_3,{\mathrm{BF}}_3$

Q23.Time required for completion of $99.9\%$ of a First order reaction is ____ times of half life $\left({\mathrm{t}}_{1/2}\right)$ of the reaction.

Q24.The Spin only magnetic moment value of square planar complex $\left[\mathrm{Pt}{\left({\mathrm{NH}}_3\right)}_2\mathrm{Cl}\left({\mathrm{NH}}_2{\mathrm{CH}}_3\right)\right]\mathrm{Cl}$ is
____ B.M. (Nearest integer)
(Given atomic number for $\mathrm{Pt}=78$)

Q25.For a certain thermochemical reaction $\mathrm{M}\to \mathrm{N}$ at $\mathrm{T}=400\mathrm{K},\Delta {\mathrm{H}}^{\ominus }=77.2\mathrm{kJ}{\mathrm{mol}}^{-1},\Delta \mathrm{S}=122{\mathrm{JK}}^{-1}$, $\log$ equilibrium constant $(\log \mathrm{K})$ is - $\_\_\_\_$ …

Q26.Volume of 3 M NaOH (formula weight $40\mathrm{g}{\mathrm{mol}}^{-1}$) which can be prepared from 84 g of NaOH is $\_\_\_\_$ $\times 10^{-1}{\mathrm{dm}}^3$.

Q27.1 mole of PbS is oxidised by "X" moles of ${\mathrm{O}}_3$ to get "Y" moles of ${\mathrm{O}}_2$. $\mathrm{X}+\mathrm{Y}=$ $\_\_\_\_$

Q28.The hydrogen electrode is dipped in a solution of $\mathrm{pH}=3$ at $25^{\circ }\mathrm{C}$. The potential of the electrode will be - $\_\_\_\_$ $\times 10^{-2}\mathrm{V}$.

Q29.9.3 g of aniline is subjected to reaction with excess of acetic anhydride to prepare acetanilide. The mass of acetanilide produced if the reaction is $100\%$ completed is $\_\_\_\_$ $\times 10^{-1}\mathrm{g}$.
(Given molar mass in $\mathrm{g}{\mathrm{mol}}^{-1}$ N: 14, O: 16, C: …

Q30.Total number of compounds with Chiral carbon atoms from following is $\_\_\_\_$.

Q1.Considering only the principal values of inverse trigonometric functions, the number of positive real values of $x$ satisfying ${\tan }^{-1}(x)+{\tan }^{-1}(2x)=\frac{\pi }{4}$ is :

Q2.Consider the function $f:(0,2)\to \mathbb{R}$ defined by $f(x)=\frac{x}{2}+\frac{2}{x}$ and the function $g(x)$ defined by $g(x)=\{\begin{array}{cc}\min \{f(t)\},& 0<t\le x\text{ and }0<x\le 1\\ \frac{3}{2}+x,& 1<x<2\end{array}$. Then

Q3.Let the image of the point ( $1,0,7$ ) in the line $\frac{x}{1}=\frac{y-1}{2}=\frac{z-2}{3}$ be the point $(\alpha ,\beta ,\gamma )$. Then which one of the following points lies on the line passing through ( $\alpha ,\beta ,\gamma$ ) and making angles $\frac{2\pi }{3}$ a …

Q4.Let R be the interior region between the lines $3x-y+1=0$ and $x+2y-5=0$ containing the origin. The set of all values of a , for which the points ( $a^2,a+1$ ) lie in R , is :

Q5.The $20^{\text{th }}$ term from the end of the progression $20,19\frac{1}{4},18\frac{1}{2},17\frac{3}{4},\dots ,-129\frac{1}{4}$ is :-

Q6.Let $f:\mathbb{R}-\left\{\frac{-1}{2}\right\}\to \mathbb{R}$ and $g:\mathbb{R}-\left\{\frac{-5}{2}\right\}\to \mathbb{R}$ be defined as $f(x)=\frac{2x+3}{2x+1}$ and $g(x)=\frac{|x|+1}{2x+5}$. Then the domain of the function fog is :

Q7.For $0<a<1$, the value of the integral $$\begin{gathered} {\int }_0^{\pi }\frac{dx}{1-2a \\ cosx+a^2} \end{gathered}$$ is :

Q8.Let $g(x)=3f\left(\frac{x}{3}\right)+f(3-x)$ and $f^{\prime \prime }(x)>0$ for all $x\in (0,3)$. If g is decreasing in ( $0,\alpha$ ) and increasing in ( $\alpha ,3$ ), then $8\alpha$ is

Q9.If ${\lim }_{x\to 0}\frac{3+\alpha \sin x+\beta \cos x+{\log }_e(1-x)}{3{\tan }^{2}x}=\frac{1}{3}$, then
$2\alpha -\beta$ is equal to :

Q10.If $\alpha ,\beta$ are the roots of the equation, $x^2-x-1=0$ and $S_n=2023{\alpha }^n+2024{\beta }^n$, then

Q11.Let A and B be two finite sets with m and n elements respectively. The total number of subsets of the set A is 56 more than the total number of subsets of B . Then the distance of the point $P(m,n)$ from the point $Q(-2,-3)$ is

Q12.The values of $\alpha$, for which
$\left|\begin{array}{ccc}1& \frac{3}{2}& \alpha +\frac{3}{2}\\ 1& \frac{1}{3}& \alpha +\frac{1}{3}\\ 2\alpha +3& 3\alpha +1& 0\end{array}\right|=0$, lie in the interval

Q13.An urn contains 6 white and 9 black balls. Two successive draws of 4 balls are made without replacement. The probability, that the first draw gives all white balls and the second draw gives all black balls, is :

Q14.The integral $\int \frac{\left(x^8-x^2\right)dx}{\left(x^{12}+3x^6+1\right){\tan }^{-1}\left(x^3+\frac{1}{x^3}\right)}$ is equal to :

Q15.If $2{\tan }^2\theta -5\sec \theta =1$ has exactly 7 solutions in the interval $\left[0,\frac{\mathrm{n}\pi }{2}\right]$, for the least value of $\mathrm{n}\in \mathrm{N}$ then ${\sum }_{\mathrm{k}=1}^{\mathrm{n}}\frac{\mathrm{k}}{2^{\mathrm{k}}}$ is equal to :

Q16.The position vectors of the vertices $\mathrm{A},\mathrm{B}$ and C of a triangle are $2\hat{i}-3\hat{j}+3\hat{k},2\hat{i}+2\hat{j}+3\hat{k}$ and $-\hat{\mathrm{i}}+\hat{\mathrm{j}}+3\hat{\mathrm{k}}$ respectively. Let $l$ denotes the length of the angle bisector AD …

Q17.If $y=y(x)$ is the solution curve of the differential equation $\left(x^2-4\right)dy-\left(y^2-3y\right)dx=0$, $x>2,y(4)=\frac{3}{2}$ and the slope of the curve is never zero, then the value of $\mathrm{y}(10)$ equals :

Q18.Let ${\mathrm{e}}_1$ be the eccentricity of the hyperbola $\frac{x^2}{16}-\frac{y^2}{9}=1$ and $e_2$ be the eccentricity of the ellipse $\frac{{\mathrm{x}}^2}{{\mathrm{a}}^2}+\frac{{\mathrm{y}}^2}{{\mathrm{b}}^2}=1,\mathrm{a}>\mathrm{b}$, which passes through the foci of …

Q19.Let $\alpha =\frac{(4!)!}{(4!{)}^{3!}}$ and $\beta =\frac{(5!)!}{(5!{)}^{4!}}$. Then :

Q20.Let the position vectors of the vertices A , B and C of a triangle be $2\hat{i}+2\hat{j}+\hat{k},\hat{i}+2\hat{j}+2\hat{k}$ and $2\hat{\mathrm{i}}+\hat{\mathrm{j}}+2\hat{\mathrm{k}}$ respectively. Let $l_1,l_2$ and $l_3$ be the lengths of perpendiculars drawn …

Q21.The mean and standard deviation of 15 observations were found to be 12 and 3 respectively. On rechecking it was found that an observation was read as 10 in place of 12 . If $\mu$ and ${\sigma }^2$ denote the mean and variance of the correct observations respectively, then …

Q22.If the area of the region
$\left\{(\mathrm{x},\mathrm{y}):0\le \mathrm{y}\le \min \left\{2\mathrm{x},6\mathrm{x}-{\mathrm{x}}^2\right\}\right\}$ is A , then 12 A is equal to ______

Q23.Let A be a $2\times 2$ real matrix and I be the identity matrix of order 2 . If the roots of the equation $|A-xI|=0$ be -1 and 3 , then the sum of the diagonal elements of the matrix ${\mathrm{A}}^2$ is ______

Q24.If the sum of squares of all real values of $\alpha$, for which the lines $2x-y+3=0,6x+3y+1=0$ and $\alpha \mathrm{x}+2\mathrm{y}-2=0$ do not form a triangle is p , then the greatest integer less than or equal to p is ______

Q25.The coefficient of $x^{2012}$ in the expansion of $(1-x{)}^{2008}{\left(1+x+x^2\right)}^{2007}$ is equal to

Q26.If the solution curve, of the differential equation $\frac{dy}{dx}=\frac{x+y-2}{x-y}$ passing through the point $(2,1)$ is ${\tan }^{-1}\left(\frac{y-1}{x-1}\right)-\frac{1}{\beta }{\log }_e\left(\alpha +{\left(\frac{y-1}{x-1}\right)}^2\right)={\log }_e|x-1|$, then …

Q27.Let $f(x)={\int }_0^{x}g(t){\log }_e\left(\frac{1-t}{1+t}\right)dt$, where g is a continuous odd function.

If ${\int }_{-\pi /2}^{\pi /2}\left(f(x)+\frac{x^2\cos x}{1+e^x}\right)dx={\left(\frac{\pi }{\alpha }\right)}^2-\alpha$, then $\alpha$ is equal to

Q28.Consider a circle $(x-\alpha {)}^2+(y-\beta {)}^2=50$, where $\alpha ,\beta >0$. If the circle touches the line $y+x=0$ at the point P, whose distance from the origin is $4\sqrt{2}$, then $(\alpha +\beta {)}^2$ is equal to

Q29.The lines $\frac{x-2}{2}=\frac{y}{-2}=\frac{z-7}{16}$ and $\frac{x+3}{4}=\frac{y+2}{3}=\frac{z+2}{1}$ intersect at the point P. If the distance of P from the line $\frac{x+1}{2}=\frac{y-1}{3}=\frac{z-1}{1}$ is $l$, then $14l^2$ is equal to

Q30.Let the complex numbers $\alpha$ and $\frac{1}{\bar{\alpha }}$ lie on the circles ${\left|z-z_0\right|}^2=4$ and ${\left|z-z_0\right|}^2=16$ respectively, where $z_0=1+i$. Then, the value of $100|\alpha {|}^2$ is