JEE Main 6 September 2020 Shift 1 Question Paper

Question 1

The area (in sq. units) of the region $A = \{(x,y) : |x| + |y| \le 1,\ 2y^2 \ge |x|\}$ is:

Accepted Answer

(D) $\dfrac{5}{6}$

Answer

(A) $\dfrac{1}{3}$

Answer

(B) $\dfrac{7}{6}$

Answer

(C) $\dfrac{1}{6}$

Question 2

Let $L_1$ be a tangent to the parabola $y^2 = 4(x+1)$ and $L_2$ be a tangent to the parabola $y^2 = 8(x+2)$ such that $L_1$ and $L_2$ intersect at right angles. Then $L_1$ and $L_2$ meet on the straight line:

Accepted Answer

(A) $x+3=0$

Answer

(B) $2x+1=0$

Answer

(C) $x+2=0$

Answer

(D) $x+2y=0$

Question 3

If $f(x+y) = f(x)f(y)$ and $\displaystyle\sum_{x=1}^{\infty} f(x) = 2,\ x, y \in N$ where N is the set of all natural numbers, then the value of $\dfrac{f(4)}{f(2)}$ is:

Accepted Answer

(D) $\dfrac{4}{9}$

Answer

(A) $\dfrac{2}{3}$

Answer

(B) $\dfrac{1}{9}$

Answer

(C) $\dfrac{1}{3}$

Question 4

If $I_1 = \displaystyle\int_0^1 (1-x^{50})^{100}\,dx$ and $I_2 = \displaystyle\int_0^1 (1-x^{50})^{101}\,dx$ such that $I_2 = \alpha I_1$ then $\alpha$ equals to:

Accepted Answer

(C) $\dfrac{5050}{5051}$

Answer

(A) $\dfrac{5049}{5050}$

Answer

(B) $\dfrac{5050}{5049}$

Answer

(D) $\dfrac{5051}{5050}$

Question 5

Out of 11 consecutive natural numbers if three numbers are selected at random (without repetition), then the probability that they are in A.P. with positive common difference, is:

Accepted Answer

(C) $\dfrac{5}{33}$

Answer

(A) $\dfrac{15}{101}$

Answer

(B) $\dfrac{5}{101}$

Answer

(D) $\dfrac{10}{99}$

Question 6

A ray of light coming from the point $(2, 2\sqrt{3})$ is incident at an angle $30^\circ$ on the line $x=1$ at the point A. The ray gets reflected on the line $x=1$ and meets $x$-axis at the point B. Then, the line AB passes through the point:

Accepted Answer

(C) $\left(3, -\sqrt{3}\right)$

Answer

(A) $\left(3, -\dfrac{1}{\sqrt{3}}\right)$

Answer

(B) $\left(4, -\dfrac{\sqrt{3}}{2}\right)$

Answer

(D) $\left(4, -\sqrt{3}\right)$

Question 7

Which of the following points lies on the locus of the foot of perpendicular drawn upon any tangent to the ellipse, $\dfrac{x^2}{4} + \dfrac{y^2}{2} = 1$ from any of its foci?

Accepted Answer

(C) $(-1, \sqrt{3})$

Answer

(A) $(-2, \sqrt{3})$

Answer

(B) $(-1, \sqrt{2})$

Answer

(D) $(1, 2)$

Question 8

The region represented by $\{z = x+iy \in C : |z| - \mathrm{Re}(z) \le 1\}$ is also given by the inequality:

Accepted Answer

(B) $y^2 \le 2\left(x+\dfrac{1}{2}\right)$

Answer

(A) $y^2 \ge 2(x+1)$

Answer

(C) $y^2 \le x + \dfrac{1}{2}$

Answer

(D) $y^2 \ge x+1$

Question 9

The position of a moving car at time t is given by $f(t) = at^2+bt+c,\ t>0$, where a, b and c are real numbers greater than 1. Then the average speed of the car over the time interval $[t_1, t_2]$ is attained at the point:

Accepted Answer

(C) $\dfrac{(t_1+t_2)}{2}$

Answer

(A) $\dfrac{(t_2-t_1)}{2}$

Answer

(B) $a(t_2-t_1)+b$

Answer

(D) $2a(t_1+t_2)+b$

Question 10

If $\displaystyle\sum_{i=1}^{n}(x_i-a) = n$ and $\displaystyle\sum_{i=1}^{n}(x_i-a)^2 = na,\ (n,a>1)$ then the standard deviation of n observations $x_1, x_2, \ldots, x_n$ is:

Accepted Answer

(D) $\sqrt{a-1}$

Answer

(A) $a-1$

Answer

(B) $n\sqrt{a-1}$

Answer

(C) $\sqrt{n(a-1)}$

Question 11

If {p} denotes the fractional part of the number p, then $\left\{\dfrac{3^{200}}{8}\right\}$, is equal to

Accepted Answer

(D) $\dfrac{1}{8}$

Answer

(A) $\dfrac{5}{8}$

Answer

(B) $\dfrac{7}{8}$

Answer

(C) $\dfrac{3}{8}$

Question 12

The shortest distance between the lines $\dfrac{x-1}{0}=\dfrac{y+1}{-1}=\dfrac{z}{1}$ and $x+y+z+1=0, 2x-y+z+3=0$ is:

Accepted Answer

(B) $\dfrac{1}{\sqrt{3}}$

Answer

(A) $1$

Answer

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

Answer

(D) $\dfrac{1}{2}$

Question 13

The negation of the Boolean expression p ∨ (~p ∧ q) is equivalent to:

Accepted Answer

(B) ~p ∧ ~q

Answer

(A) p ∧ ~q

Answer

(C) ~p ∨ ~q

Answer

(D) ~p ∨ q

Question 14

Two families with three members each and one family with four members are to be seated in a row. In how many ways can they be seated so that the same family members are not separated?

Accepted Answer

(B) $(3!)^{3}.(4!)$

Answer

(A) $2!3!4!$

Answer

(C) $(3!)^{2}.(4!)$

Answer

(D) $3!(4!)^{3}$

Question 15

Let m and M be respectively the minimum and maximum values of $\begin{vmatrix}\cos^{2}x & 1+\sin^{2}x & \sin 2x\ 1+\cos^{2}x & \sin^{2}x & \sin 2x\ \cos^{2}x & \sin^{2}x & 1+\sin 2x\end{vmatrix}$. Then the ordered pair (m, M) is equal to:

Accepted Answer

(B) $(-3,-1)$

Answer

(A) $(-3,3)$

Answer

(C) $(-4,-1)$

Answer

(D) $(1,3)$

Question 16

Let a, b, c, d and p be any non zero distinct real numbers such that $(a^{2}+b^{2}+c^{2})p^{2}-2(ab+bc+cd)p+(b^{2}+c^{2}+d^{2})=0$. Then:

Accepted Answer

(C) a, b, c, d are in G.P.

Answer

(A) a, c, p are in A.P.

Answer

(B) a, c, p are in G.P.

Answer

(D) a, b, c, d are in A.P.

Question 17

The value of $\lambda$ and $\mu$ for which the system of linear equations $x+y+z=2$, $x+2y+3z=5$, $x+3y+\lambda z=\mu$ has infinitely many solutions are, respectively:

Accepted Answer

(C) 5 and 8

Answer

(A) 6 and 8

Answer

(B) 5 and 7

Answer

(D) 4 and 9

Question 18

Set A has m elements and Set B has n elements. If the total number of subsets of A is 112 more than the total number of subsets of B, then the value of m.n is ____.

Accepted Answer

28

Question 19

Let $f:R	o R$ be defined as $f(x)=\begin{cases}x^{5}\sin\left(\dfrac{1}{x}ight)+5x^{2}, & x<0\ 0, & x=0\ x^{5}\cos\left(\dfrac{1}{x}ight)+\lambda x^{2}, & x>0\end{cases}$. The value of $\lambda$ for which $f''(0)$ exists, is ____.

Accepted Answer

05

Question 20

If $\vec{a}$ and $\vec{b}$ are unit vectors, then the greatest value of $\sqrt{3}\left|\vec{a}+\vec{b}\right|+\left|\vec{a}-\vec{b}\right|$ is ____.

Accepted Answer

04

Question 21

Let AD and BC be two vertical poles at A and b respectively on a horizontal ground. If AD = 8 m, BC = 11 m and AB = 10 m; then the distance (in meters) of a point M on AB from the point A such that $MD^{2}+MC^{2}$ is minimum is ____.

Accepted Answer

05

Question 22

The angle of elevation of the top of a hill from a point on the horizontal plane passing through the foot of the hill is found to be $45^{\circ}$. After walking a distance of 80 meters towards the top, up a slope inclined at an angle of $30^{\circ}$ to the horizontal plane, the angle of elevation of the top of the hill becomes $75^{\circ}$. Then the height of the hill (in metres) is ____.

Accepted Answer

80

Question 23

A screw gauge has 50 divisions on its circular scale. The circular scale is 4 units ahead of the pitch scale marking, prior to use. Upon one complete rotation of the circular scale, a displacement of 0.5 mm is noticed on the pitch scale. The nature of zero error involved, and the least count of the screw gauge, are respectively:

Accepted Answer

(B) Positive, 10 μm

Answer

(A) Negative, 2 μm

Answer

(C) Positive, 0.1 mm

Answer

(D) Positive, 0.1 μm

Question 24

A sound source S is moving along a straight track with speed v, and is emitting sound of frequency $
u_0$ (see figure). An observer is standing at a finite distance, at the point O, from the track. The time variation of frequency heard by the observer is best represented by: ($t_0$ represents the instant when the distance between the source and observer is minimum)

Accepted Answer

(B) (B)

Answer

(A) (A)

Answer

(C) (C)

Answer

(D) (D)

Question 25

In the figure below, P and Q are two equally intense coherent sources emitting radiation of wavelength 20 m. The separation between P and Q is 5 m and the phase of P is ahead of that of Q by $90^{\circ}$. A, B and C are three distinct points of observation, each equidistant from the midpoint of PQ. The intensities of radiation at A, B, C will be in the ratio:

Accepted Answer

(B) 2 : 1 : 0

Answer

(A) 0 : 1 : 4

Answer

(C) 0: 1 : 2

Answer

(D) 4 : 1 : 0

Question 26

Charge $Q_1$ and $Q_2$ are at point A and B of a right angle triangle OAB (see figure). The resultant electric field at point O is perpendicular to the hypotenuse, then $\dfrac{Q_1}{Q_2}$ is proportional to:

Accepted Answer

(C) $\dfrac{x_1}{x_2}$

Answer

(A) $\dfrac{x_1^{3}}{x_2^{3}}$

Answer

(B) $\dfrac{x_2}{x_1}$

Answer

(D) $\dfrac{x_2^{2}}{x_1^{2}}$

Question 27

Shown in the figure is a hollow icecream cone (it is open at the top). If its mass is M, radius of its top, R and height, H, then its moment of inertia about its axis is:

Accepted Answer

(A) $\dfrac{MR^{2}}{2}$

Answer

(B) $\dfrac{M\left(R^{2}+H^{2}\right)}{4}$

Answer

(C) $\dfrac{MH^{2}}{3}$

Answer

(D) $\dfrac{MR^{2}}{3}$

Question 28

Four point masses, each of mass m, are fixed at the corners of a square of side l. The square is rotating with angular frequency $\omega$, about an axis passing through one of the corners of the square and parallel to its diagonal, as shown in the figure. The angular momentum of the square about this axis is:

Accepted Answer

(C) $3ml^{2}\omega$

Answer

(A) $ml^{2}\omega$

Answer

(B) $5ml^{2}\omega$

Answer

(D) $2ml^{2}\omega$

Question 29

For the given input voltage waveform $V_{in}(t)$, the output voltage waveform $V_0(t)$, across the capacitor is correctly depicted by:

Accepted Answer

(A) (A)

Answer

(B) (B)

Answer

(C) (C)

Answer

(D) (D)

Question 30

An insect is at the bottom of a hemispherical ditch or radius 1 m. It crawls up the ditch but starts slipping after it is at height h from the bottom. If the coefficient of friction between the ground and the insect is 0.75, then h is: $\left(g=10\,ms^{-2}\right)$

Accepted Answer

(A) 0.20 m

Answer

(B) 0.45 m

Answer

(C) 0.60 m

Answer

(D) 0.80 m

Question 31

A satellite is in an elliptical orbit around a planet P. It is observed that the velocity of the satellite when it is farthest from the planet is 6 times less than that when it is closest to the planet. The ratio of distances between the satellite and the planet at closest and farthest points is:

Accepted Answer

(A) 1 : 6

Answer

(B) 1 : 3

Answer

(C) 1 : 2

Answer

(D) 3 : 4

Question 32

An electron, a doubly ionized helium ion $\left(He^{++}\right)$ and a proton are having the same kinetic energy. The relation between their respective de – Broglie wavelength $\lambda_e, \lambda_{He^{++}}$ and $\lambda_p$ is:

Accepted Answer

(C) $\lambda_e > \lambda_P > \lambda_{He^{++}}$

Answer

(A) $\lambda_e > \lambda_{He^{++}} > \lambda_P$

Answer

(B) $\lambda_e < \lambda_{He^{++}} = \lambda_P$

Answer

(D) $\lambda_e < \lambda_P < \lambda_{He^{++}}$

Question 33

A clock has a continuously moving second's hand of 0.1 m length. The average acceleration of the tip of the hand (in units of $	ext{ms}^{-2}$) is of the order of:

Accepted Answer

(A) $10^{-3}$

Answer

(B) $10^{-4}$

Answer

(C) $10^{-2}$

Answer

(D) $10^{-1}$

Question 34

You are given that Mass of $^7_2	ext{Li} = 7.0160	ext{u}$ Mass of $^4_2	ext{He} = 4.0026	ext{u}$ and $^1_1	ext{H} = 1.0079	ext{u}$. When 20 g of $^7_3	ext{Li}$ is converted into $^4_2	ext{He}$ by proton capture, the energy liberated, (in kWh), is [Mass of nucleon $=\dfrac{1	ext{Gev}}{c^2}$]

Accepted Answer

(D) $1.33	imes10^6$

Answer

(A) $4.5	imes10^5$

Answer

(B) $8	imes10^6$

Answer

(C) $6.82	imes10^5$

Question 35

A point like object is placed at a distance of 1 m in front of convex lens of focal length 0.5 m. A plane mirror is placed at a distance of 2m behind the lens. The position and nature of the final image formed by the system is:

Accepted Answer

(A) 2.6 m from the mirror, real

Answer

(B) 1 m from the mirror, virtual

Answer

(C) 1 m from the mirror, real

Answer

(D) 2.6 m from the mirror, virtual

Question 36

Molecules of an ideal gas are known to have three translational degrees of freedom and two rotational degrees of freedom. The gas is maintained at a temperature of T. The total internal energy, U of a mole of this gas, and the value of $\gamma\left(=\dfrac{C_P}{C_v}\right)$ are given, respectively, by:

Accepted Answer

(C) $U=\dfrac{5}{2}RT$ and $\gamma=\dfrac{7}{5}$

Answer

(A) $U=\dfrac{5}{2}RT$ and $\gamma=\dfrac{6}{5}$

Answer

(B) $U=5RT$ and $\gamma=\dfrac{7}{5}$

Answer

(D) $U=5RT$ and $\gamma=\dfrac{6}{5}$

Question 37

An object of mass m is suspended at the end of a massless wire of length L and area of cross – selection, A. Young modulus of the material of the wire is Y. If the mass is pulled down slightly its frequency of oscillation along the vertical direction is:

Accepted Answer

(B) $f=\dfrac{1}{2\pi}\sqrt{\dfrac{YA}{mL}}$

Answer

(A) $f=\dfrac{1}{2\pi}\sqrt{\dfrac{mL}{YA}}$

Answer

(C) $f=\dfrac{1}{2\pi}\sqrt{\dfrac{mA}{YL}}$

Answer

(D) $f=\dfrac{1}{2\pi}\sqrt{\dfrac{YL}{mA}}$

Question 38

An electron is moving along + x direction with a velocity of $6	imes10^6	ext{ms}^{-1}$. It enters a region of uniform electric field of 300 V/cm pointing along + y direction. The magnitude and direction of the magnetic field set up in this region such that the electron keeps moving along the x direction will be:

Accepted Answer

(C) $5	imes10^{-3}$T, along + z direction

Answer

(A) $3	imes10^{-4}$T, along + z direction

Answer

(B) $5	imes10^{-3}$T, along – z direction

Answer

(D) $3	imes10^{-4}$T, along – z direction

Question 39

The density of a solid metal sphere is determined by measuring its mass and its diameter. The maximum error in the density of the sphere is $\left(\dfrac{x}{100}\right)\%$. If the relative errors in measuring the mass and the diameter are 6.0% and 1.5% respectively, the value of x is __________.

Accepted Answer

1050.00

Question 40

Two bodies of the same mass are moving with the same speed, but in different directions in a plane. They have a completely inelastic collision and move together thereafter with a final speed which is half of their initial speed. The angle between the initial velocities of the two bodies (in degree) is __________.

Accepted Answer

120.00

Question 41

Initially a gas of diatomic molecules is contained in a cylinder of volume $V_1$ at a pressure $P_1$ and temperature 250 K. Assuming that 25% of the molecules get dissociated causing a change in number of moles. The pressure of the resulting gas at temperature 2000 K, when contained in a volume $2V_1$ is given by $P_2$. The ratio $\dfrac{P_2}{P_1}$ is __________.

Accepted Answer

05.00

Question 42

A part of complete circuit is shown in the figure. At some instant, the value of current I is 1 A and it is decreasing at a rate of $10^2	ext{As}^{-1}$. The value of the potential difference $V_P-V_Q$, (in volts) at that instant, is __________.

Accepted Answer

33.00

Question 43

The correct statement with respect to dinitrogen is:

Accepted Answer

(D) It can be used as an inert diluent for reactive chemicals

Answer

(A) $N_2$ is paramagnetic in nature

Answer

(B) It can combine with dioxygen at $25^\circ$ C.

Answer

(C) Liquid dinitrogen is not used in cryosurgery

Question 44

The major product obtained from the following reaction is:

Accepted Answer

(A) (A)

Answer

(B) (B)

Answer

(C) (C)

Answer

(D) (D)

Question 45

A solution of two components containing $n_1$ moles of the $1^{st}$ component and $n^2$ moles of the $2^{nd}$ component is prepared. $M_1$ and $M_2$ are the molecular weights of component 1 and 2 respectively. If d is the density of the solution in $gmL^{-1}$, $C_2$ is the molarity and $x_2$ is the mole fraction of the $2^{nd}$ component, then $C_2$ can be expressed as:

Accepted Answer

(C) $C_2 = \dfrac{1000dx_2}{M_1+x_2(M_2-M_1)}$

Answer

(A) $C_2 = \dfrac{1000x_2}{M_1+x_2(M_2-M_1)}$

Answer

(B) $C_2 = \dfrac{dx_2}{M_2+x_2(M_2-M_1)}$

Answer

(D) $C_2 = \dfrac{dx_1}{M_2+x_2(M_2-M_1)}$

Question 46

The INCORRECT statement is:

Accepted Answer

(D) brass is an alloy of copper and nickel.

Answer

(A) bronze is an alloy of copper and tin

Answer

(B) cast iron is used to manufacture wrought iron

Answer

(C) german silver is an alloy of zinc, copper and nickel

Question 47

Consider the Assertion and Reason given below.
Assertion (A): Ethene polymerized in the presence of Ziegler Natta Catalyst at high temperature and pressure is used to make buckets and dustbins.
Reason (R): High density polymers are closely packed and are chemically inert.
Choose the correct answer from the following:

Accepted Answer

(C) Both (A) and (R) are correct and (R) is the correct explanation of (A)

Answer

(A) (A) is correct but (R) is wrong

Answer

(B) Both (A) and (R) are correct but (R) is not the correct explanation of (A)

Answer

(D) (A) and (R) both are wrong.

Question 48

Arrange the following solutions in the decreasing order of pOH
(1) 0.01 M HCl
(2) 0.01 M NaOH
(3) 0.01 M $CH_3COONa$
(4) 0.01 M NaCl

Accepted Answer

(B) (1) > (4) > (3) > (2)

Answer

(A) (1) > (3) > (4) > (2)

Answer

(C) (2) > (3) > (4) > (1)

Answer

(D) (2) > (4) > (3) > (1)

Question 49

Among the sulphates of alkaline earth metals, the solubilities of $BeSO_4$ and $MgSO_4$ in water, respectively, are:

Accepted Answer

(C) high and high

Answer

(A) poor and poor

Answer

(B) high and poor

Answer

(D) poor and high

Question 50

The major products of the following reaction are:
$CH_3-CH(CH_3)-CH(OSO_2CH_3)-CH_3$ $\xrightarrow{(i)\ KO^tBu/\Delta\quad (ii)\ O_3/H_2O_2}$

Accepted Answer

(D) (D)

Answer

(A) (A)

Answer

(B) (B)

Answer

(C) (C)

Question 51

The major product of the following reaction is:

Accepted Answer

(D) (D)

Answer

(A) (A)

Answer

(B) (B)

Answer

(C) (C)

Question 52

The present of soluble fluoride ion upto 1 ppm concentration in drinking water, is:

Accepted Answer

(D) safe for teeth

Answer

(A) harmful for teeth

Answer

(B) harmful to skin

Answer

(C) harmful to bones

Question 53

The increasing order of $pK_b$ values of the following compounds is:

Accepted Answer

(B) I < II < IV < III

Answer

(A) II < IV < III < I

Answer

(C) II < I < III < IV

Answer

(D) I < II < III < IV

Question 54

Which of the following compounds shows geometrical isomerism?

Accepted Answer

(B) 4 – methylpent 2 – ene

Answer

(A) 2 – methylpent 2 – ene

Answer

(C) 4 – methylpent – 1 – ene

Answer

(D) 2 – methylpent –1 – ene

Question 55

The set that contains atomic numbers of only transition elements, is

Accepted Answer

(B) 21, 25, 42, 72

Answer

(A) 37, 42, 50, 64

Answer

(C) 9, 17, 34, 38

Answer

(D) 21, 32, 53, 64

Question 56

The variation of equilibrium constant with temperature is given below:

The value of $\Delta H^o$, $\Delta G^o$ at $T_1$ and $\Delta G^o$ at $T_2$

(in kJ mol$^{-1}$) respectively, are close to

[Use $R = 8.314 J K^{-1} mol^{-1}$]

Accepted Answer

(C) 28.4, − 5.71 and − 14.29

Answer

(A) 28.7, − 7.14 and − 5.71

Answer

(B) 0.64 − 7.14 and − 5.71

Answer

(D) 0.64, − 5.71 and −14.29

Question 57

Kraft temperature is the temperature:

Accepted Answer

(D) above which the formation of micelles takes place.

Answer

(A) below which the aqueous solution of detergents starts freezing

Answer

(B) below which the formation of micelles takes place

Answer

(C) above which the aqueous solution of detergents starts boiling

Question 58

For the reaction
$Fe_2N(s) + \dfrac{3}{2}H_2(g) = 2Fe(s) + NH_3(g)$

Accepted Answer

(C) $K_c = K_P(RT)^{1/2}$

Answer

(A) $K_c = K_p(RT)$

Answer

(B) $K_c = K_P(RT)^{-1/2}$

Answer

(D) $K_c = K_P(RT)^{3/2}$

Question 59

The species that has a spin – only magnetic moment of 5.9 BM, is:
($T_d$ = tetrahedral)

Accepted Answer

(D) $[MnBr_4]^{2-}(T_d)$

Answer

(A) $[Ni(CN)_4]^{2-}$ (square planar)

Answer

(B) $[NiCl_4]^{2-}(T_d)$

Answer

(C) $Ni(CO)_4(T_d)$

Question 60

The lanthanoid that does NOT show +4 oxidation state is:

Accepted Answer

(C) Eu

Answer

(A) Dy

Answer

(B) Ce

Answer

(D) Tb

Question 61

Consider the following reactions
$A \rightarrow P1; B \rightarrow P2; C \rightarrow P3; D \rightarrow P4$,
The order of the above reactions are a, b, c and d, respectively. The following graph is obtained when log[rate] vs. log[conc.] are plotted:

Among the following, the correct sequence for the order of the reactions is:

Accepted Answer

(D) d > b > a > c

Answer

(A) d > a > b > c

Answer

(B) a > b > c > d

Answer

(C) c > a > b > d

Question 62

In an estimation of bromine by Carius method, 1.6 g of an organic compound gave 1.88 g of AgBr. The mass percentage of bromine in the compound is ______________
(Atomic mass, Ag = 108, Br = 80 g mol$^{-1}$)

Accepted Answer

50

Question 63

Potassium chlorate is prepared by the electrolysis of KCl in basic solution
$6HO^- + Cl^- \rightarrow ClO_3^- + 3H_2O + 6e^-$
If only 60% of the current is utilized in the reaction, the time (rounded to the nearest hour) required to produce 10 g of $KClO_3$ using a current of 2A is ________________.
(Given : F = 96,500 C mol$^{-1}$; molar mass of $KClO_3$ = 122 g mol$^{-1}$)

Accepted Answer

11

Question 64

The number of Cl = O bonds in perchloric acid is," ______________".

Accepted Answer

3

Temperature	Equilibrium Constant
$T_1 = 25^oC$	$K_1 = 10$
$T_2 = 100^oC$	$K_2 = 100$

JEE Main 6 September 2020 Shift 1 Question Paper with Answers

Physics — JEE Main 6 September 2020 Shift 1

Chemistry — JEE Main 6 September 2020 Shift 1

Mathematics — JEE Main 6 September 2020 Shift 1

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