JEE Main 2024 — 27 January, Shift 1

${ }^{\mathrm{n}-1} \mathrm{C}_{\mathrm{r}}=\left(\mathrm{k}^{2}-8\right)^{\mathrm{n}} \mathrm{C}_{\mathrm{r}+1}$ if and only if :

The distance, of the point $(7,-2,11)$ from the line $\frac{x-6}{1}=\frac{y-4}{0}=\frac{z-8}{3}$ along the line $\frac{x-5}{2}=\frac{y-1}{-3}=\frac{z-5}{6}$, is :

Let $x=x(t)$ and $y=y(t)$ be solutions of the differential equations $\frac{\mathrm{dx}}{\mathrm{dt}}+\mathrm{ax}=0 \quad$ and $\frac{d y}{d t}+b y=0$ respectively, $a, b \in R$. Given that $x(0)=2 ; y(0)=1$ and $3 y(1)=2 x(1)$, the value of $t$, for which $x(t)=y(t)$, is :

If $(a, b)$ be the orthocentre of the triangle whose vertices are $(1,2),(2,3)$ and $(3,1)$, and $I_{1}=\int_{a}^{b} x \sin \left(4 x-x^{2}\right) d x, \quad I_{2}=\int_{a}^{b} \sin \left(4 x-x^{2}\right) d x$ , then $36 \frac{I_{1}}{I_{2}}$ is equal to :

If A denotes the sum of all the coefficients in the expansion of $\left(1-3 x+10 x^{2}\right)^{n}$ and $B$ denotes the sum of all the coefficients in the expansion of $\left(1+x^{2}\right)^{n}$, then :

The number of common terms in the progressions $4,9,14,19, \ldots \ldots$, up to $25^{\text {th }}$ term and $3,6,9,12$, ......., up to $37^{\text {th }}$ term is :

If the shortest distance of the parabola $y^{2}=4 x$ from the centre of the circle $x^{2}+y^{2}-4 x-16 y+64=0$ is $d$, then $d^{2}$ is equal to :

If the shortest distance between the lines $\frac{x-4}{1}=\frac{y+1}{2}=\frac{z}{-3}$ and $\frac{x-\lambda}{2}=\frac{y+1}{4}=\frac{z-2}{-5}$ is $\frac{6}{\sqrt{5}}$, then the sum of all possible values of $\lambda$ is :

If $\int_{0}^{1} \frac{1}{\sqrt{3+x}+\sqrt{1+x}} d x=a+b \sqrt{2}+c \sqrt{3}$, where $a, b, c$ are rational numbers, then $2 a+3 b-4 c$ is equal to :

Let $S=\{1,2,3, \ldots, 10\}$. Suppose $M$ is the set of all the subsets of $S$, then the relation $R=\{(A, B): A \cap B \neq \phi ; A, B \in M\}$ is :

If $S=\{z \in C:|z-i|=|z+i|=|z-1|\}$, then, $n(S)$ is:

Four distinct points $(2 \mathrm{k}, 3 \mathrm{k}),(1,0),(0,1)$ and $(0,0)$ lie on a circle for $k$ equal to :

Consider the function. $f(x)=\left\{\begin{array}{cc}\frac{a\left(7 x-12-x^{2}\right)}{b\left|x^{2}-7 x+12\right|} & , x<3\\ 2^{\frac{\sin (x-3)}{x-[x]}} & , x>3 b & , x=3\end{array}\right.$ Where $[\mathrm{x}]$ denotes the greatest integer less than or equal to $x$. If $S$ denotes the set of all ordered pairs $(a, b)$ such that $f(x)$ is continuous at $x=3$, then the number of elements in $S$ is :

The portion of the line $4 x+5 y=20$ in the first quadrant is trisected by the lines $\mathrm{L}_{1}$ and $\mathrm{L}_{2}$ passing through the origin. The tangent of an angle between the lines $\mathrm{L}_{1}$ and $\mathrm{L}_{2}$ is :

Let $\vec{a}=\overset{}{\mathop{i}}\,+2\overset{}{\mathop{j}}\,+k,\vec{b}=3\left( \overset{}{\mathop{i}}\,-\overset{}{\mathop{j}}\,+k \right)$. Let $\vec{c}$ be the vector such that $\vec{a}\times \vec{c}=\vec{b}$ and $\vec{a}\cdot \vec{c}=3$. Then $\vec{a}\cdot \left( \left( \vec{c}\times \vec{b} \right)-\vec{b}-\vec{c} \right)$ is equal to :

If $a=\lim _{x \rightarrow 0} \frac{\sqrt{1+\sqrt{1+x^{4}}}-\sqrt{2}}{x^{4}}$ and $b=\lim _{x \rightarrow 0} \frac{\sin ^{2} x}{\sqrt{2}-\sqrt{1+\cos x}}$, then the value of $a b^{3}$ is :

Given below are two statements : one is labelled as Statement I and the other is labelled as Statement II:

Consider the matrix $f(x)=\left[\begin{array}{ccc}\cos x & -\sin x & 0\\ \sin x & \cos x & 0\\ 0 & 0 & 1\end{array}\right]$

Statement I: $f(-x)$ is the inverse of the matrix $f(x)$.

Statement II: $f(x) f(y)=f(x+y)$. In the light of the above statements, choose the correct answer from the options given below

In the light of the above statements, choose the correct answer from the options given below :

The function $\mathrm{f}: \mathrm{N}-\{1\} \rightarrow \mathrm{N}$; defined by $\mathrm{f}(\mathrm{n})=$ the highest prime factor of n , is :

The least positive integral value of $\alpha$, for which the angle between the vectors $\alpha \hat{i}-2 \hat{j}+2 k$ and $\alpha \hat{i}+2 \alpha \hat{j}-2 k$ is acute, is

Let for a differentiable function $\mathrm{f}:(0, \infty) \rightarrow \mathrm{R}$, $f(x)-f(y) \geq \log _{e}\left(\frac{x}{y}\right)+x-y, \forall x, y \in(0, \infty)$. Then $\sum_{\mathrm{n}=1}^{20} \mathrm{f}^{\prime}\left(\frac{1}{\mathrm{n}^{2}}\right)$ is equal to $\_\_\_\_\_\_\_$ .

If the solution of the differential equation $(2 x+3 y-2) d x+(4 x+6 y-7) d y=0, y(0)=3$ is $\alpha x+\beta y+3 \log _{e}|2 x+3 y-\gamma|=6$, then $\alpha+2 \beta+3 \gamma$ is equal to $\_\_\_\_\_\_\_$ .

Let the area of the region $\{(x, y): x-2 y+4 \geq 0$, $\left.x+2 y^{2} \geq 0, x+4 y^{2} \leq 8, y \geq 0\right\}$ be $\frac{m}{n}$, where $m$ and n are coprime numbers. Then $\mathrm{m}+\mathrm{n}$ is equal to

If $8=3+\frac{1}{4}(3+p)+\frac{1}{4^{2}}(3+2 p)+\frac{1}{4^{3}}(3+3 p)+\ldots \infty$ then the value of $p$ is

A fair die is tossed repeatedly until a six is obtained. Let X denote the number of tosses required and let $\mathrm{a}=\mathrm{P}(\mathrm{X}=3), \mathrm{b}=\mathrm{P}(\mathrm{X} \geq 3)$ and $\mathrm{c}=$ $P(X \geq 6 \mid X>3)$. Then $\frac{b+c}{a}$ is equal to

Let the set of all $a \in R$ such that the equation $\cos 2 x+a \sin x=2 a-7$ has a solution be $[p, q]$ and $r=\tan 9^{\circ}-\tan 27^{\circ}-\frac{1}{\cot 63^{\circ}}+\tan 81^{\circ}$, then pqr is equal to

Let $f(x)=x^{3}+x^{2}f^{\prime}(1)+xf$"(2)$+f^{\prime\prime\prime}(3),$ $x\in R$ Then $\mathrm{f}^{\prime}(10)$ is equal to

Let $\mathrm{A}=\left[\begin{array}{lll}2 & 0 & 1\\ 1 & 1 & 0\\ 1 & 0 & 1\end{array}\right], \mathrm{B}=\left[\mathrm{B}_{1}, \mathrm{~B}_{2}, \mathrm{~B}_{3}\right]$ where $\mathrm{B}_{1}$, $\mathrm{B}_{2}, \mathrm{~B}_{3}$ are column matrices, and $\mathrm{AB}_{1}=\left[\begin{array}{l}1 \\0\\ 0\end{array}\right]$, $\mathrm{AB}_{2}=\left[\begin{array}{l}2 \\3 \\0\end{array}\right], \mathrm{AB}_{3}=\left[\begin{array}{l}3 \\2\\ 1\end{array}\right]$ If $\alpha=|\mathrm{B}|$ and $\beta$ is the sum of all the diagonal elements of $B$, then $\alpha^{3}+\beta^{3}$ is equal to

If $\alpha$ satisfies the equation $x^{2}+x+1=0$ and $(1+\alpha)^{7}=\mathrm{A}+\mathrm{B} \alpha+\mathrm{C} \alpha^{2}, \mathrm{~A}, \mathrm{~B}, \mathrm{C} \geq 0$then $5(3 \mathrm{~A}-2 \mathrm{~B}-\mathrm{C})$ is equal to

Position of an ant ( S in metres) moving in $\mathrm{Y}-\mathrm{Z}$ plane is given by $S=2 t^{2} \hat{j}+5 \hat{k}$ (where $t$ is in second). The magnitude and direction of velocity of the ant at $t=1 \mathrm{~s}$ will be :

Given below are two statements : one is labelled as Statement I and the other is labelled as Statement II:

Statement I: Viscosity of gases is greater than that of liquids.

Statement II: Surface tension of a liquid decreases due to the presence of insoluble impurities.

In the light of the above statements, choose the correct answer from the options given below :

If the refractive index of the material of a prism is $\cot \left(\frac{\mathrm{A}}{2}\right)$, where A is the angle of prism then the angle of minimum deviation will be

A proton moving with a constant velocity passes through a region of space without any change in its velocity. If $\vec{E}$ and $\vec{B}$ represent the electric and magnetic fields respectively, then the region of space may have :

(A) $\mathrm{E}=0, \mathrm{~B}=0$

(B) $\mathrm{E}=0, \mathrm{~B} \neq 0$

(C) $\mathrm{E} \neq 0, \mathrm{~B}=0$

(D) $\mathrm{E} \neq 0, \mathrm{~B} \neq 0$

Choose the most appropriate answer from the options given below :

The acceleration due to gravity on the surface of earth is $g$ If the diameter of earth reduces to half of its original value and mass remains constant, then acceleration due to gravity on the surface of earth would be :

A train is moving with a speed of $12 \mathrm{~m} / \mathrm{s}$ on rails which are 1.5 m apart. To negotiate a curve radius 400 m , the height by which the outer rail should be raised with respect to the inner rail is (Given, $\mathrm{g}=$ $\left.10 \mathrm{~m} / \mathrm{s}^{2}\right):$

Identify the physical quantity that cannot be measured using spherometer :

Two bodies of mass 4 g and 25 g are moving with equal kinetic energies. The ratio of magnitude of their linear momentum is

0.08 kg air is heated at constant volume through $5^{\circ} \mathrm{C}$. The specific heat of air at constant volume is $0.17 \mathrm{kcal} / \mathrm{kg}^{\circ} \mathrm{C}$ and $\mathrm{J}=4.18$ joule $/ \mathrm{cal}$. The change in its internal energy is approximately.

The radius of third stationary orbit of electron for Bohr's atom is R . The radius of fourth stationary orbit will be:

A rectangular loop of length 2.5 m and width 2 m is placed at $60^{\circ}$ to a magnetic field of 4 T . The loop is removed from the field in 10 sec . The average emf induced in the loop during this time is

An electric charge $10^{-6} \mu \mathrm{C}$ is placed at origin $(0,0)$ m of $\mathrm{X}-\mathrm{Y}$ co-ordinate system. Two points P and Q are situated at $(\sqrt{3}, \sqrt{3}) \mathrm{m}$ and $(\sqrt{6}, 0) \mathrm{m}$ respectively. The potential difference between the points $P$ and $Q$ will be :

A convex lens of focal length 40 cm forms an image of an extended source of light on a photoelectric cell. A current I is produced. The lens is replaced by another convex lens having the same diameter but focal length 20 cm . The photoelectric current now is :

A body of mass 1000 kg is moving horizontally with a velocity $6 \mathrm{~m} / \mathrm{s}$. If 200 kg extra mass is added, the final velocity (in $\mathrm{m} / \mathrm{s}$ ) is:

A plane electromagnetic wave propagating in x -direction is described by $\mathrm{E}_{\mathrm{y}}=\left(200 \mathrm{Vm}^{-1}\right) \sin \left[1.5 \times 10^{7} \mathrm{t}-0.05 \mathrm{x}\right]$

The intensity of the wave is : (Use $\epsilon_{0}=8.85 \times 10^{-12} \mathrm{C}^{2} \mathrm{~N}^{-1} \mathrm{~m}^{-2}$ )

Given below are two statements : one is labelled as Statement I and the other is labelled as Statement II:

Statement I: Planck's constant and angular momentum have same dimensions.

Statement II: Linear momentum and moment of force have same dimensions.

In the light of the above statements, choose the correct answer from the options given below :

A wire of length 10 cm and radius $\sqrt{7} \times 10^{-4} \mathrm{~m}$ connected across the right gap of a meter bridge. When a resistance of $4.5 \Omega$ is connected on the left gap by using a resistance box, the balance length is found to be at 60 cm from the left end. If the resistivity of the wire is $\mathrm{R} \times 10^{-7} \Omega \mathrm{~m}$, then value of R is :

A wire of resistance R and length L is cut into 5 equal parts. If these parts are joined parallely, then resultant resistance will be :

The average kinetic energy of a monatomic molecule is 0.414 eV at temperature :

$\left(\right.$ Use $\left.\mathrm{K}_{\mathrm{B}}=1.38 \times 10^{-23} \mathrm{~J} / \mathrm{mol}-\mathrm{K}\right)$

A particle starts from origin at $t=0$ with a velocity $5 \hat{\mathrm{i}} \mathrm{m} / \mathrm{s}$ and moves in $\mathrm{x}-\mathrm{y}$ plane under action of a force which produces a constant acceleration of $(3 \hat{i}+2 \hat{j}) \mathrm{m} / \mathrm{s}^{2}$. If the $x$-coordinate of the particle at that instant is 84 m , then the speed of the particle at this time is $\sqrt{\alpha} \mathrm{m} / \mathrm{s}$. The value of $\alpha$ is $\_\_\_\_\_\_\_$

A thin metallic wire having cross sectional area of $10^{-4} \mathrm{~m}^{2}$ is used to make a ring of radius 30 cm . A positive charge of $2 \pi \mathrm{C}$ is uniformly distributed over the ring, while another positive charge of 30 pC is kept at the centre of the ring. The tension in the ring is $\_\_\_\_\_$ N ; provided that the ring does not get deformed (neglect the influence of gravity). (given, $\frac{1}{4 \pi \epsilon_{0}}=9 \times 10^{9}$ SI units)

Two coils have mutual inductance 0.002 H . The current changes in the first coil according to the relation $\mathrm{i}=\mathrm{i}_{0} \sin \omega \mathrm{t}$, where $\mathrm{i}_{0}=5 \mathrm{~A}$ and $\omega=50 \pi$ $\mathrm{rad} / \mathrm{s}$. The maximum value of emf in the second coil is $\frac{\pi}{\alpha} \mathrm{V}$. The value of $\alpha$ is $\qquad$

Two immiscible liquids of refractive indices $\frac{8}{5}$ and $\frac{3}{2}$ respectively are put in a beaker as shown in the figure. The height of each column is 6 cm . A coin is placed at the bottom of the beaker. For near normal vision, the apparent depth of the coin is $\frac{\alpha}{4} \mathrm{~cm}$. The value of $\alpha$ is $\_\_\_\_\_\_\_$

In a nuclear fission process, a high mass nuclide $(\mathrm{A} \approx 236)$ with binding energy 7.6 MeV/Nucleon dissociated into middle mass nuclides $(\mathrm{A} \approx 118)$, having binding energy of $8.6 \mathrm{MeV} /$ Nucleon. The energy released in the process would be $\_\_\_\_\_$ MeV .

Four particles each of mass 1 kg are placed at four corners of a square of side 2 m . Moment of inertia of system about an axis perpendicular to its plane and passing through one of its vertex is $\_\_\_\_\_\_\_$ $\mathrm{kgm}^{2}$

A particle executes simple harmonic motion with an amplitude of 4 cm . At the mean position, velocity of the particle is $10 \mathrm{~cm} / \mathrm{s}$. The distance of the particle from the mean position when its speed becomes $5 \mathrm{~cm} / \mathrm{s}$ is $\sqrt{\alpha} \mathrm{cm}$, where $\alpha=$ $\qquad$

Two long, straight wires carry equal currents in opposite directions as shown in figure. The separation between the wires is 5.0 cm . The magnitude of the magnetic field at a point $P$ midway between the wires is $\_\_\_\_\_\_\_$ $\mu \mathrm{T}$

(Given : $\mu_{0}=4 \pi \times 10^{-7} \mathrm{TmA}^{-1}$ ) $10 \mathrm{~A}|\dot{\mathrm{P}}| 10 \mathrm{~A}$

The charge accumulated on the capacitor connected in the following circuit $\mu \mathrm{C}$ (Given $\mathrm{C}=150 \mu \mathrm{~F}$ )

If average depth of an ocean is 4000 m and the bulk modulus of water is $2 \times 10^{9} \mathrm{Nm}^{-2}$, then fractional compression $\frac{\Delta \mathrm{V}}{\mathrm{V}}$ of water at the bottom of ocean is $\alpha \times 10^{-2}$. The value of $\alpha$ is $\qquad$

(Given, $\mathrm{g}=10 \mathrm{~ms}^{-2}, \rho=1000 \mathrm{~kg} \mathrm{~m}^{-3}$ )

Two nucleotides are joined together by a linkage known as :

Element not showing variable oxidation state is

which of the following electronic configuration would be associated with the highest magnetic moment

A solution of two miscible liquids showing negative deviation from Raoult's law will have :

Consider the following complex ions

$\mathrm{P}=\left[\mathrm{FeF}_{6}\right]^{3-}$

$\mathrm{Q}=\left[\mathrm{V}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$

$\mathrm{R}=\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$

The correct order of the complex ions, according to their spin only magnetic moment values (in B.M.) is :

Choose the polar molecule from the following :

Given below are two statements, one is labelled as Statement I and the other is labelled as Statement II.

Statement I: he $4f$ and $5f$ series of elements are placed separately in the periodic table to preserve the principle of classification.

Statement II : $s$-block elements can be found in pure form in nature.

In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements, one is labelled as Statement I and the other is labelled as Statement II.

Statement (I) : p-nitrophenol is more acidic than m-nitrophenol and o-nitrophenol.

Statement (II) : Ethanol will give immediate turbidity with Lucas reagent.

In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Melting point of Boron (2453 K) is unusually high in group 13 elements.

Reason (R) : Solid Boron has very strong crystalline lattice.

In the light of the above statements, choose the most appropriate answer from the options given below ;

Yellow compound of lead chromate gets dissolved on treatment with hot NaOH solution. The product of lead formed is a :

Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R).

Statement (I) : Aqueous solution of ammonium carbonate is basic.

Statement (II) : Acidic/basic nature of salt solution of a salt of weak acid and weak base depends on $\mathrm{K}_{\mathrm{a}}$ and $\mathrm{K}_{b}$ value of acid and the base forming it.

In the light of the above statements, choose the most appropriate answer from the options given below :

IUPAC name of following compound $(\mathrm{P})$ is :

NaCl reacts with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$ and $\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$ to give reddish fumes (B), which react with NaOH to give yellow solution (C). (B) and (C) respectively are ;

The correct statement regarding nucleophilic substitution reaction in a chiral alkyl halide is ;

The electronic configuration for Neodymium is: [Atomic Number for Neodymium 60]

The mass of silver (Molar mass of $\mathrm{Ag}: 108 \mathrm{gmol}^{-1}$ ) displaced by a quantity of electricity which displaces 5600 mL of $\mathrm{O}_{2}$ at S.T.P. will be $\qquad$ g.

Consider the following data for the reaction:

Determine the order of the reaction with respect to $\mathrm{HI}$.

Mass of methane required to produce $22\,\mathrm{g}$ of $\mathrm{CO_2}$ after complete combustion is $\_\_\_\_$ g.

(Given molar mass in $\mathrm{g\,mol^{-1}}$: $\mathrm{C}=12.0$, $\mathrm{H}=1.0$, $\mathrm{O}=16.0$)

If three moles of an ideal gas at 300 K expand isotherrnally from $30 \mathrm{dm}^{3}$ to $45 \mathrm{dm}^{3}$ against a constant opposing pressure of 80 kPa , then the amount of heat transferred is $\qquad$ J.

3-Methylhex-2-ene on reaction with HBr in presence of peroxide forms an addition product (A). The number of possible stereoisomers for ' A ' is $\_\_\_\_$ .

Among the following, total number of meta directing functional groups is (Integer based)

$-\mathrm{OCH}_{3},-\mathrm{NO}_{2},-\mathrm{CN},-\mathrm{CH}_{3}-\mathrm{NHCOCH}_{3}$, $-\mathrm{COR},-\mathrm{OH},-\mathrm{COOH},-\mathrm{Cl}$

The number of electrons present in all the completely filled subshells having $\mathrm{n}=4$ and $\mathrm{s}=+\frac{1}{2}$ is $\_\_\_\_\_$ .

(Given: $\mathrm{n}=$ principal quantum number and $\mathrm{s}=$ spin quantum number)

Sum of bond order of CO and $\mathrm{NO}^{+}$is $\qquad$

From the given list, the number of compounds with +4 oxidation state of Sulphur $\qquad$ .

The length of the chord of the ellipse $\frac{x^2}{25} + \frac{y^2}{16} = 1$, whose mid point is $\left(1, \frac{2}{5}\right)$, is equal to :