JEE Main 18 March 2021 Shift 2 Question Paper

Question 1

Let y = y(x) be the solution of the differential equation $\frac{dy}{dx} = (y+1)\left((y+1)e^{x^{2}/2} - x\right)$, 0 < x < 2.1, with y(2) = 0. Then the value of $\frac{dy}{dx}$ at x = 1 is equal to :

Accepted Answer

(A) $\frac{-e^{3/2}}{\left(e^{2}+1\right)^{2}}$

Answer

(B) $-\frac{2e^{2}}{\left(1+e^{2}\right)^{2}}$

Answer

(C) $\frac{e^{5/2}}{\left(1+e^{2}\right)^{2}}$

Answer

(D) $\frac{5e^{1/2}}{\left(e^{2}+1\right)^{2}}$

Question 2

In a triangle ABC, if $\left|\vec{BC}\right| = 8$, $\left|\vec{CA}\right| = 7$, $\left|\vec{AB}\right| = 10$, then the projection of the vector $\vec{AB}$ on $\vec{AC}$ is equal to :

Accepted Answer

(B) $\frac{85}{14}$

Answer

(A) $\frac{25}{4}$

Answer

(C) $\frac{127}{20}$

Answer

(D) $\frac{115}{16}$

Question 3

Let the system of linear equations
4x + λy + 2z = 0
2x − y + z = 0
μx + 2y + 3z = 0, λ, μ ∈ R.
has a non-trivial solution. Then which of the following is true ?

Accepted Answer

(A) μ = 6, λ ∈ R

Answer

(B) λ = 2, μ ∈ R

Answer

(C) λ = 3, μ ∈ R

Answer

(D) μ = −6, λ ∈ R

Question 4

Let f : R − {3} → R − {1} be defined by $f(x) = \frac{x-2}{x-3}$. Let g : R → R be given as g(x) = 2x − 3. Then, the sum of all the values of x for which $f^{-1}(x) + g^{-1}(x) = \frac{13}{2}$ is equal to

Accepted Answer

(C) 5

Answer

(A) 7

Answer

(B) 2

Answer

(D) 3

Question 5

Let the centroid of an equilateral triangle ABC be at the origin. Let one of the sides of the equilateral triangle be along the straight line x + y = 3. If R and r be the radius of circumcircle and incircle respectively of ΔABC, then (R + r) is equal to :

Accepted Answer

(A) $\frac{9}{\sqrt{2}}$

Answer

(B) $7\sqrt{2}$

Answer

(C) $2\sqrt{2}$

Answer

(D) $3\sqrt{2}$

Question 6

Consider a hyperbola H : $x^{2} - 2y^{2} = 4$. Let the tangent at a point $P\left(4, \sqrt{6}\right)$ meet the x-axis at Q and latus rectum at $R(x_{1}, y_{1})$, $x_{1} > 0$. If F is a focus of H which is nearer to the point P, then the area of ΔQFR is equal to

Accepted Answer

(C) $\frac{7}{\sqrt{6}}-2$

Answer

(A) $4\sqrt{6}$

Answer

(B) $\sqrt{6}-1$

Answer

(D) $4\sqrt{6}-1$

Question 7

If P and Q are two statements, then which of the following compound statement is a tautology ?

Accepted Answer

(B) ((P ⇒ Q) ∧ ~ Q) ⇒ ~ P

Answer

(A) ((P ⇒ Q) ∧ ~ Q) ⇒ Q

Answer

(C) ((P ⇒ Q) ∧ ~ Q) ⇒ P

Answer

(D) ((P ⇒ Q) ∧ ~ Q) ⇒ (P ∧ Q)

Question 8

Let $g(x) = \int_{0}^{x} f(t)\,dt$, where f is continuous function in [0, 3] such that $\frac{1}{3} \le f(t) \le 1$ for all t ∈ [0, 1] and $0 \le f(t) \le \frac{1}{2}$ for all t ∈ (1, 3]. The largest possible interval in which g(3) lies is :

Accepted Answer

(C) $\left[\frac{1}{3}, 2\right]$

Answer

(A) $\left[-1, -\frac{1}{2}\right]$

Answer

(B) $\left[-\frac{3}{2}, -1\right]$

Answer

(D) [1, 3]

Question 9

Let $S_{1}$ be the sum of first 2n terms of an arithmetic progression. Let $S_{2}$ be the sum of first 4n terms of the same arithmetic progression. If $(S_{2} - S_{1})$ is 1000, then the sum of the first 6n terms of the arithmetic progression is equal to:

Accepted Answer

(D) 3000

Answer

(A) 1000

Answer

(B) 7000

Answer

(C) 5000

Question 10

Let a complex number be w = 1 − $\sqrt{3}i$. Let another complex number z be such that |zw| = 1 and arg(z) − arg(w) = $\frac{\pi}{2}$. Then the area of the triangle with vertices origin, z and w is equal to :

Accepted Answer

(B) $\frac{1}{2}$

Answer

(A) 4

Answer

(C) $\frac{1}{4}$

Answer

(D) 2

Question 11

Let in a series of 2n observations, half of them are equal to a and remaining half are equal to −a. Also by adding a constant b in each of these observations, the mean and standard deviation of new set become 5 and 20, respectively. Then the value of $a^{2} + b^{2}$ is equal to :

Accepted Answer

(A) 425

Answer

(B) 650

Answer

(C) 250

Answer

(D) 925

Question 12

Let $S_{1} : x^{2} + y^{2} = 9$ and $S_{2} : (x-2)^{2} + y^{2} = 1$. Then the locus of center of a variable circle S which touches $S_{1}$ internally and $S_{2}$ externally always passes through the points :

Accepted Answer

(C) $\left(2, \pm\frac{3}{2}\right)$

Answer

(A) $\left(0, \pm\sqrt{3}\right)$

Answer

(B) $\left(\frac{1}{2}, \pm\frac{\sqrt{5}}{2}\right)$

Answer

(D) $\left(1, \pm 2\right)$

Question 13

Let $\vec{a}$ and $\vec{b}$ be two non-zero vectors perpendicular to each other and $\left|\vec{a}ight| = \left|\vec{b}ight|$. If $\left|\vec{a} 	imes \vec{b}ight| = \left|\vec{a}ight|$, then the angle between the vectors $\left(\vec{a} + \vec{b} + \left(\vec{a} 	imes \vec{b}ight)ight)$ and $\vec{a}$ is equal to :

Accepted Answer

(B) $\cos^{-1}\left(\frac{1}{\sqrt{3}}\right)$

Answer

(A) $\sin^{-1}\left(\frac{1}{\sqrt{3}}\right)$

Answer

(C) $\cos^{-1}\left(\frac{1}{\sqrt{2}}\right)$

Answer

(D) $\sin^{-1}\left(\frac{1}{\sqrt{6}}\right)$

Question 14

Let in a Binomial distribution, consisting of 5 independent trials, probabilities of exactly 1 and 2 successes be 0.4096 and 0.2048 respectively. Then the probability of getting exactly 3 successes is equal to :

Accepted Answer

(A) $\frac{32}{625}$

Answer

(B) $\frac{80}{243}$

Answer

(C) $\frac{40}{243}$

Answer

(D) $\frac{128}{625}$

Question 15

Let a tangent be drawn to the ellipse $\frac{x^{2}}{27} + y^{2} = 1$ at $\left(3\sqrt{3}\cos	heta, \sin	hetaight)$ where $	heta \in \left(0, \frac{\pi}{2}ight)$. Then the value of θ such that the sum of intercepts on axes made by this tangent is minimum is equal to :

Accepted Answer

(C) $\frac{\pi}{6}$

Answer

(A) $\frac{\pi}{8}$

Answer

(B) $\frac{\pi}{4}$

Answer

(D) $\frac{\pi}{3}$

Question 16

Define a relation R over a class of n × n real matrices A and B as "ARB iff there exists a non-singular matrix P such that $PAP^{-1} = B$". Then which of the following is true ?

Accepted Answer

(C) R is an equivalence relation

Answer

(A) R is symmetric, transitive but not reflexive,

Answer

(B) R is reflexive, symmetric but not transitive

Answer

(D) R is reflexive, transitive but not symmetric

Question 17

A pole stands vertically inside a triangular park ABC. Let the angle of elevation of the top of the pole from each corner of the park be $\frac{\pi}{3}$. If the radius of the circumcircle ot ΔABC is 2, then the height of the pole is equal to :

Accepted Answer

(B) $2\sqrt{3}$

Answer

(A) $\frac{2\sqrt{3}}{3}$

Answer

(C) $\sqrt{3}$

Answer

(D) $\frac{1}{\sqrt{3}}$

Question 18

If $15\sin^{4}\alpha + 10\cos^{4}\alpha = 6$, for some α ∈ R, then the value of $27\sec^{6}\alpha + 8\,\mathrm{cosec}^{6}\alpha$ is equal to :

Accepted Answer

(D) 250

Answer

(A) 350

Answer

(B) 500

Answer

(C) 400

Question 19

The area bounded by the curve $4y^{2} = x^{2}(4-x)(x-2)$ is equal to :

Accepted Answer

(C) $\frac{3\pi}{2}$

Answer

(A) $\frac{\pi}{8}$

Answer

(B) $\frac{3\pi}{8}$

Answer

(D) $\frac{\pi}{16}$

Question 20

Let f : R → R be a function defined as
$f(x) = \begin{cases} \dfrac{\sin(a+1)x + \sin 2x}{2x} & ,\ 	ext{if } x < 0 \ b & ,\ 	ext{if } x = 0 \ \dfrac{\sqrt{x + bx^{3}} - \sqrt{x}}{bx^{5/2}} & ,\ 	ext{if } x > 0 \end{cases}$
If f is continuous at x = 0, then the value of a + b is equal to :

Accepted Answer

(D) $-\frac{3}{2}$

Answer

(A) $-\frac{5}{2}$

Answer

(B) −2

Answer

(C) −3

Question 21

If $f(x)$ and g(x) are two polynomials such that the polynomial $P(x) = f(x^{3}) + xg(x^{3})$ is divisible by $x^{2} + x + 1$, then P(1) is equal to ________ .

Accepted Answer

0

Question 22

Let I be an identity matrix of order 2 × 2 and $P = \begin{bmatrix} 2 & -1 \ 5 & -3 \end{bmatrix}$. Then the value of n ∈ N for which $P^{n} = 5I - 8P$ is equal to ________ .

Accepted Answer

6

Question 23

If $\sum_{r=1}^{10} r!\left(r^{3} + 6r^{2} + 2r + 5\right) = \alpha(11!)$, then the value of α is equal to ________ .

Accepted Answer

160

Question 24

The term independent of x in the expansion of $\left[\frac{x+1}{x^{2/3} - x^{1/3} + 1} - \frac{x-1}{x - x^{1/2}}\right]^{10}$, x ≠ 1, is equal to ________ .

Accepted Answer

210

Question 25

Let P(x) be a real polynomial of degree 3 which vanishes at x = −3. Let P(x) have local minima at x = 1, local maxima at x = −1 and $\int_{-1}^{1} P(x)\,dx = 18$, then the sum of all the coefficients of the polynomial P(x) is equal to ________ .

Accepted Answer

8

Question 26

Let the mirror image of the point (1, 3, a) with respect to the plane $\vec{r} \cdot \left(2\hat{i} - \hat{j} + \hat{k}\right) - b = 0$ be (−3, 5, 2). Then the value of |a + b| is equal to ________ .

Accepted Answer

1

Question 27

Let $f$ : R → R satisfy the equation $f(x + y) = f(x) \cdot f(y)$ for all x, y ∈ R and f(x) ≠ 0 for any x ∈ R. If the function $f$ is differentiable at x = 0 and $f'(0) = 3$, then $\lim_{h 	o 0} \frac{1}{h}\left(f(h) - 1ight)$ is equal to ________ .

Accepted Answer

3

Question 28

Let P be a plane containing the line $\frac{x-1}{3} = \frac{y+6}{4} = \frac{z+5}{2}$ and parallel to the line $\frac{x-3}{4} = \frac{y-2}{-3} = \frac{z+5}{7}$. If the point (1, −1, α) lies on the plane P, then the value of |5α| is equal to ________ .

Accepted Answer

38

Question 29

Let y = y(x) be the solution of the differential equation $xdy - ydx = \sqrt{\left(x^{2} - y^{2}\right)}\,dx$ , x ≥ 1, with y(1) = 0. If the area bounded by the line x = 1, $x = e^{\pi}$, y = 0 and y = y(x) is $\alpha e^{2\pi} + \beta$, then the value of 10(α + β) is equal to ________ .

Accepted Answer

4

Question 30

An object of mass $m_1$ collides with another object of mass $m_2$, which is at rest. After the collision the objects move with equal speeds in opposite direction. The ratio of the masses $m_2 : m_1$ is :

Accepted Answer

(A) 3 : 1

Answer

(B) 2 : 1

Answer

(C) 1 : 2

Answer

(D) 1 : 1

Question 31

For an adiabatic expansion of an ideal gas, the fractional change in its pressure is equal to (where γ is the ratio of specific heats):

Accepted Answer

(A) $-\gamma\frac{dV}{V}$

Answer

(B) $-\gamma\frac{V}{dV}$

Answer

(C) $-\frac{1}{\gamma}\frac{dV}{V}$

Answer

(D) $\frac{dV}{V}$

Question 32

A proton and an α-particle, having kinetic energies $K_p$ and $K_\alpha$, respectively, enter into a magnetic field at right angles.
The ratio of the radii of trajectory of proton to that of α-particle is 2 : 1. The ratio of $K_p : K_\alpha$ is :

Accepted Answer

(D) 4 : 1

Answer

(A) 1 : 8

Answer

(B) 8 : 1

Answer

(C) 1 : 4

Question 33

A plane electromagnetic wave propagating along y-direction can have the following pair of electric field $\left(\vec{E}\right)$ and magnetic field $\left(\vec{B}\right)$ components.

Accepted Answer

(C) $E_x$, $B_z$ or $E_z$, $B_x$

Answer

(A) $E_y$, $B_y$ or $E_z$, $B_z$

Answer

(B) $E_y$, $B_x$ or $E_x$, $B_y$

Answer

(D) $E_x$, $B_y$ or $E_y$, $B_x$

Question 34

Consider a uniform wire of mass M and length L. It is bent into a semicircle. Its moment of inertia about a line perpendicular to the plane of the wire passing through the centre is :

Accepted Answer

(C) $\frac{ML^{2}}{\pi^{2}}$

Answer

(A) $\frac{1}{4}\frac{ML^{2}}{\pi^{2}}$

Answer

(B) $\frac{2}{5}\frac{ML^{2}}{\pi^{2}}$

Answer

(D) $\frac{1}{2}\frac{ML^{2}}{\pi^{2}}$

Question 35

The velocity-displacement graph of a particle is shown in the figure.
The acceleration-displacement graph of the same particle is represented by :

Accepted Answer

(C) (3)

Answer

(A) (1)

Answer

(B) (2)

Answer

(D) (4)

Question 36

The correct relation between α (ratio of collector current to emitter current) and β (ratio of collector current to base current) of a transistor is :

Accepted Answer

(D) $\alpha=\frac{\beta}{1+\beta}$

Answer

(A) $\beta=\frac{\alpha}{1+\alpha}$

Answer

(B) $\alpha=\frac{\beta}{1-\alpha}$

Answer

(C) $\beta=\frac{1}{1-\alpha}$

Question 37

Three rays of light, namely red (R), green (G) and blue (B) are incident on the face PQ of a right angled prism PQR as shown in figure.
The refractive indices of the material of the prism for red, green and blue wavelength are 1.27, 1.42 and 1.49 respectively. The colour of the ray(s) emerging out of the face PR is :

Accepted Answer

(B) red

Answer

(A) green

Answer

(C) blue and green

Answer

(D) blue

Question 38

If the angular velocity of earth's spin is increased such that the bodies at the equator start floating, the duration of the day would be approximately :
(Take : g = 10 ms$^{-2}$, the radius of earth, R = 6400 × 10$^{3}$ m, Take π = 3.14)

Accepted Answer

(D) 84 minutes

Answer

(A) 60 minutes

Answer

(B) does not change

Answer

(C) 1200 minutes

Question 39

The decay of a proton to neutron is :

Accepted Answer

(B) possible only inside the nucleus

Answer

(A) not possible as proton mass is less than the neutron mass

Answer

(C) not possible but neutron to proton conversion is possible

Answer

(D) always possible as it is associated only with β$^{+}$ decay

Question 40

In a series LCR circuit, the inductive reactance ($X_L$) is 10 Ω and the capacitive reactance ($X_C$) is 4 Ω. The resistance (R) in the circuit is 6 Ω. The power factor of the circuit is :

Accepted Answer

(C) $\frac{1}{\sqrt{2}}$

Answer

(A) $\frac{1}{2}$

Answer

(B) $\frac{1}{2\sqrt{2}}$

Answer

(D) $\frac{\sqrt{3}}{2}$

Question 41

The angular momentum of a planet of mass M moving around the sun in an elliptical orbit is $\vec{L}$. The magnitude of the areal velocity of the planet is :

Accepted Answer

(D) $\frac{L}{2M}$

Answer

(A) $\frac{4L}{M}$

Answer

(B) $\frac{L}{M}$

Answer

(C) $\frac{2L}{M}$

Question 42

The function of time representing a simple harmonic motion with a period of $\frac{\pi}{\omega}$ is :

Accepted Answer

(D) $3\cos\left(\frac{\pi}{4}-2\omega t\right)$

Answer

(A) sin(ωt) + cos (ωt)

Answer

(B) cos(ωt) + cos (2ωt) + cos (3ωt)

Answer

(C) $\sin^{2}(\omega t)$

Question 43

A solid cylinder of mass m is wrapped with an inextensible light string and, is placed on a rough inclined plane as shown in the figure. The frictional force acting between the cylinder and the inclined plane is :
[The coefficient of static friction, $\mu_s$, is 0.4]

Accepted Answer

(C) $\frac{mg}{5}$

Answer

(A) $\frac{7}{2}mg$

Answer

(B) 5 mg

Answer

(D) 0

Question 44

The time taken for the magnetic energy to reach 25% of its maximum value, when a solenoid of resistance R, inductance L is connected to a battery, is :

Accepted Answer

(C) $\frac{L}{R}\ell n2$

Answer

(A) $\frac{L}{R}\ell n5$

Answer

(B) infinite

Answer

(D) $\frac{L}{R}\ell n10$

Question 45

A particle of mass m moves in a circular orbit under the central potential field, $U(r)=\frac{-C}{r}$, where C is a positive constant.
The correct radius – velocity graph of the particle's motion is :

Accepted Answer

(A) (1)

Answer

(B) (2)

Answer

(C) (3)

Answer

(D) (4)

Question 46

An ideal gas in a cylinder is separated by a piston in such a way that the entropy of one part is $S_1$ and that of the other part is $S_2$. Given that $S_1 > S_2$. If the piston is removed then the total entropy of the system will be :

Accepted Answer

(D) $S_1 + S_2$

Answer

(A) $S_1 	imes S_2$

Answer

(B) $S_1 - S_2$

Answer

(C) $\frac{S_1}{S_2}$

Question 47

The speed of electrons in a scanning electron microscope is 1 × 10$^{7}$ ms$^{-1}$. If the protons having the same speed are used instead of electrons, then the resolving power of scanning proton microscope will be changed by a factor of:

Accepted Answer

(A) 1837

Answer

(B) $\frac{1}{1837}$

Answer

(C) $\sqrt{1837}$

Answer

(D) $\frac{1}{\sqrt{1837}}$

Question 48

The projectile motion of a particle of mass 5 g is shown in the figure.
The initial velocity of the particle is $5\sqrt{2}$ ms$^{-1}$ and the air resistance is assumed to be negligible. The magnitude of the change in momentum between the points A and B is x × 10$^{-2}$ kgms$^{-1}$. The value of x, to the nearest integer, is _______.

Accepted Answer

5

Question 49

A ball of mass 4 kg, moving with a velocity of 10 ms$^{-1}$, collides with a spring of length 8 m and force constant 100 Nm$^{-1}$. The length of the compressed spring is x m. The value of x, to the nearest integer, is_____.

Accepted Answer

6

Question 50

The typical output characteristics curve for a transistor working in the common-emitter configuration is shown in the figure.
The estimated current gain from the figure is

Accepted Answer

200

Question 51

Consider a water tank as shown in the figure. It's cross-sectional area is 0.4 m$^{2}$. The tank has an opening B near the bottom whose cross-section area is 1 cm$^{2}$. A load of 24 kg is applied on the water at the top when the height of the water level is 40 cm above the bottom, the velocity of water coming out the opening B is v ms$^{-1}$. The value of v, to the nearest integer, is___.
[Take value of g to be 10 ms$^{-2}$]

Accepted Answer

3

Question 52

A TV transmission tower antenna is at a height of 20 m. Suppose that the receiving antenna is at.
(i) ground level
(ii) a height of 5 m.
The increase in antenna range in case (ii) relative to case (i) is n%.
The value of n, to the nearest integer, is .

Accepted Answer

50

Question 53

An infinite number of point charges, each carrying 1 μC charge, are placed along the y-axis at y = 1 m, 2 m, 4 m, 8 m.................. The total force on a 1 C point charge, placed at the origin, is x × 10$^{3}$ N. The value of x, to the nearest integer, is________.
[Take $\frac{1}{4\pi \epsilon_{0}}$ = 9 × 10$^{9}$ Nm$^{2}$/C$^{2}$]

Accepted Answer

12

Question 54

Consider a 72 cm long wire AB as shown in the figure. The galvanometer jockey is placed at P on AB at a distance x cm from A. The galvanometer shows zero deflection.
The value of x, to the nearest integer, is

Accepted Answer

48

Question 55

Two wires of same length and thickness having specific resistances 6Ω cm and 3Ω cm respectively are connected in parallel. The effective resistivity is ρ Ω cm. The value of ρ, to the nearest integer, is_____.

Accepted Answer

4

Question 56

A galaxy is moving away from the earth at a speed of 286 kms$^{-1}$. The shift in the wavelength of a red line at 630 nm is x × 10$^{-10}$ m. The value of x, to the nearest integer, is______.
[Take the value of speed of light c, as 3 × 10$^{8}$ ms$^{-1}$]

Accepted Answer

6

Question 57

The oxidation states of nitrogen in NO, NO$_{2}$, N$_{2}$O and NO$_{3}^{-}$ are in the order of :

Accepted Answer

(A) NO$_{3}^{-}$ > NO$_{2}$ > NO > N$_{2}$O

Answer

(B) NO$_{2}$ > NO$_{3}^{-}$ > NO > N$_{2}$O

Answer

(C) N$_{2}$O > NO$_{2}$ > NO > NO$_{3}^{-}$

Answer

(D) NO > NO$_{2}$ > N$_{2}$O > NO$_{3}^{-}$

Question 58

In basic medium, H$_{2}$O$_{2}$ exhibits which of the following reactions ?
(A) Mn$^{2+}$ → Mn$^{4+}$
(B) I$_{2}$ → I$^{-}$
(C) PbS → PbSO$_{4}$
Choose the most appropriate answer from the options given below :

Accepted Answer

(D) (A), (B) only

Answer

(A) (A), (C) only

Answer

(B) (A) only

Answer

(C) (B) only

Question 59

In the reaction of hypobromite with amide, the carbonyl carbon is lost as :

Accepted Answer

(A) CO$_{3}^{2-}$

Answer

(B) HCO$_{3}^{-}$

Answer

(C) CO$_{2}$

Answer

(D) CO

Question 60

The oxide that shows magnetic property is :

Accepted Answer

(B) Mn$_{3}$O$_{4}$

Answer

(A) SiO$_{2}$

Answer

(C) Na$_{2}$O

Answer

(D) MgO

Question 61

Main Products formed during a reaction of 1-methoxy naphthalene with hydroiodic acid are:

Accepted Answer

(B) (2)

Answer

(A) (1)

Answer

(C) (3)

Answer

(D) (4)

Question 62

Deficiency of vitamin K causes :

Accepted Answer

(A) Increase in blood clotting time

Answer

(B) Increase in fragility of RBC's

Answer

(C) Cheilosis

Answer

(D) Decrease in blood clotting time

Question 63

An organic compound "A" on treatment with benzene sulphonyl chloride gives compound B. B is soluble in dil. NaOH solution. Compound A is :

Accepted Answer

(D) C$_{6}$H$_{5}$–CH(CH$_{3}$)–NH$_{2}$

Answer

(A) C$_{6}$H$_{5}$–N–(CH$_{3}$)$_{2}$

Answer

(B) C$_{6}$H$_{5}$–NHCH$_{2}$CH$_{3}$

Answer

(C) C$_{6}$H$_{5}$–CH$_{2}$ NHCH$_{3}$

Question 64

The first ionization energy of magnesium is smaller as compared to that of elements X and Y, but higher than that of Z. the elements X, Y and Z, respectively, are :

Accepted Answer

(C) argon, chlorine and sodium

Answer

(A) chlorine, lithium and sodium

Answer

(B) argon, lithium and sodium

Answer

(D) neon, sodium and chlorine

List-I	List-II
a.Mercury	i.Vapour phase refining
b.Copper	ii.Distillation refining
c.Silicon	iii.Electrolytic refining
d.Nickel	iv.Zone refining

JEE Main 18 March 2021 Shift 2 Question Paper with Answers

Physics — JEE Main 18 March 2021 Shift 2

Chemistry — JEE Main 18 March 2021 Shift 2

Mathematics — JEE Main 18 March 2021 Shift 2

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