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KEAM Paper 1 Mock Test - 4 - JEE MCQ


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120 Questions MCQ Test KEAM Mock Test Series 2024 - KEAM Paper 1 Mock Test - 4

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KEAM Paper 1 Mock Test - 4 - Question 1

The ratio of the largest to shortest wavelengths in Lyman series of hydrogen spectra is

KEAM Paper 1 Mock Test - 4 - Question 2

When the length and area of cross-section both are doubled, then its resistance

KEAM Paper 1 Mock Test - 4 - Question 3

The more readily fissionable isotope of uranium has an atomic mass of

KEAM Paper 1 Mock Test - 4 - Question 4

A copper wire of resistance R is cut into ten parts of equal length. Two pieces each are joined in series and then five such combinations are joined in parallel. The new combination will have a resistance

KEAM Paper 1 Mock Test - 4 - Question 5

If an electron and a photon propagate in the form of waves having the same wavelength, it implies that they have the same

KEAM Paper 1 Mock Test - 4 - Question 6

Particle nature is shown by

KEAM Paper 1 Mock Test - 4 - Question 7

Which of the following electromagnetic waves have the smallest wavelength?

KEAM Paper 1 Mock Test - 4 - Question 8

A capacitor of capacitance 1μF is charged to 1KV. The energy stored in the capacitor in joules is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 8

C = 1μF
V = 1KV
energy stored U = 1/2 (CV2)
= 1/2 x 1 x 12 = 0.5

KEAM Paper 1 Mock Test - 4 - Question 9

A 4μF capacitor is charged to 400V. Then its plates are joined through a 100 Ω resistor. The heat produced in the resistor is

KEAM Paper 1 Mock Test - 4 - Question 10

The radius of orbit of a planet is two times that of the earth. The time period of planet is

KEAM Paper 1 Mock Test - 4 - Question 11

Gravitational mass is proportional to gravitational

KEAM Paper 1 Mock Test - 4 - Question 12

The energy emitted per second by a black body at 27ºC is 10J. If the temperature of the black body is increased to 327ºC, then energy emitted per second will be

KEAM Paper 1 Mock Test - 4 - Question 13

The energy supply being cut-off, an electric element cools down to the temperature of its surrounding. But it will not cool further, because

KEAM Paper 1 Mock Test - 4 - Question 14

Four blocks of same mass connected by cords are pulled by a force F on a smooth horizontal surface, as shown in figure. The tensions T1, T2 and T3 will be

KEAM Paper 1 Mock Test - 4 - Question 15

A particle starts from rest and has an acceleration of 2m − s⁻2 for 10 s. After that, it travels for 30 s with constant speed and then undergoes a retardation of 4 m − s⁻2 and comes back to rest. The total distance covered by the particle is

KEAM Paper 1 Mock Test - 4 - Question 16

Four charged particles are projected perpendicularly into the magnetic field with equal speed. Which will have minimum frequency?

KEAM Paper 1 Mock Test - 4 - Question 17

A bottle weighing 220 gram and of area of cross-section 50 cm2, and height 4 cm oscillates on the surface of water in vertical position. Its frequency of oscillation is

KEAM Paper 1 Mock Test - 4 - Question 18

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A):Doppler effect holds also for electromagnetic waves including microwaves, radio waves and visible light.
Reason(R) : As speed of light is independent of relative motion between source and observer, the formulae for doppler effect are different from that of sound.

KEAM Paper 1 Mock Test - 4 - Question 19

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): All processes in which pressure and volume are proportional, take place at constant temperature.
Reason(R): Work done in a thermodynamical process is path dependent.

KEAM Paper 1 Mock Test - 4 - Question 20

Scent sprayer is based on

KEAM Paper 1 Mock Test - 4 - Question 21

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): When we switch on the lights one after the other in our house the main current goes on increasing.
Reason(R): Voltage = current x resistance

KEAM Paper 1 Mock Test - 4 - Question 22

Atmospheric pressure is measured by

KEAM Paper 1 Mock Test - 4 - Question 23

If the period of oscillation of mass M suspended from a spring is one second, then the period of 4 M will be

KEAM Paper 1 Mock Test - 4 - Question 24

Two discs have same mass and thickness. Their materials have densities d₁ and d₂. The ratio of their moments of inertia about central axis will be

KEAM Paper 1 Mock Test - 4 - Question 25

A convex lens of focal length 0.15m is made of a material of refractive index 3/2. When it is placed in a liquid, its focal length is increased by 0.225m. The refractive index of the liquid is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 25
KEAM Paper 1 Mock Test - 4 - Question 26

The intensity ratio of the waves is 1 : 16. The ratio of their amplitudes is

KEAM Paper 1 Mock Test - 4 - Question 27

A copper block of mass 4 kg is heated in a furnance to a temperature 425ºC and then placed on a large ice block. The mass of ice that will melt in this process will be (Specific heat of copper=500 J-kg⁻1-ºC⁻1 and heat of fusion of ice = 336 kJ-kg⁻1).

KEAM Paper 1 Mock Test - 4 - Question 28

The ratio of the slopes of P-V diagrams of adibatic and isothermal processes is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 28

The slope of an adiabatic process is P-V graph DP/DV = y P/V (where P/V is the slope of an isothermal process). Therefore ratio of adiabatic slope to isothermal slope = y. 

KEAM Paper 1 Mock Test - 4 - Question 29

ML⁻1T⁻2 represents

KEAM Paper 1 Mock Test - 4 - Question 30

In young's double slit experiment, the intensity of central maximum is I. It one slit is closed, the intensity at the same place will become

KEAM Paper 1 Mock Test - 4 - Question 31

A cylindrical vessel is filled with water up to height H. A hole is bored in the wall at a depth h from the free surface of water. For maximum range, h is equal to

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 31

KEAM Paper 1 Mock Test - 4 - Question 32

The eye-piece used in biological microscope is

KEAM Paper 1 Mock Test - 4 - Question 33

A force 103 newton stretches the length of a hanging wire by 1 millimetre. The force required to stretch a wire of same material and length but having four times the diameter by 1 millimeter is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 33

 (Y,l and L are constant) If diameter is made four times then force required will be 16 times. i.e. 16 x 103 N

KEAM Paper 1 Mock Test - 4 - Question 34

A ball rolls without slipping. The radius of gyration of the ball about an axis passing through its centre of mass is K. If radius of the ball be R, then the fraction of total energy associated with its rotational energy will be

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 34

KEAM Paper 1 Mock Test - 4 - Question 35

A body of mass 5 g is executing S.H.M. with amplitude 10 cm. Its maximum velocity is 100 cm/s. Its velocity will be 50 cm/s at a displacement from the mean position equal to

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 35

KEAM Paper 1 Mock Test - 4 - Question 36

The maximum speed of a body vibrating under simple harmonic motion with a time period of π/4 sec and amplitude of 7 cm is

KEAM Paper 1 Mock Test - 4 - Question 37

We consider a thermodynamic system. If ∆U represents the increase in its internal energy and W the work done by the system, which of the following statements is true

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 37

Explanation: In an adiabatic process,
∆Q=0
∆U=∆Q-∆W=0-W=-W.

KEAM Paper 1 Mock Test - 4 - Question 38

The golden view of sea shell is due to

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 38

When a ray of light falls on sea shell, then its small amount first gets refracted (slightly polarised) and then almost gets reflected back (fully polarised). That is why, view of sea shell is golden due to polarisation.

KEAM Paper 1 Mock Test - 4 - Question 39

Calcorimeters are made of which of the following

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 39

Calorimeters are made up of metal only because they are good conductor of heat and hence the heat exchange is quick which the basic requirement for the working of calorimeter. 

KEAM Paper 1 Mock Test - 4 - Question 40

The position of a particle at time 't' is given by the equation  Where V0 is constant and A > 0. Dimensions of V0 and A respectively are

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 40

begin mathsize 12px style The space position space of space the space particle space at space straight a space time space straight t space is space given space as
straight x left parenthesis straight t right parenthesis equals fraction numerator straight v subscript straight o over denominator straight a left parenthesis 1 minus straight e to the power of negative at end exponent right parenthesis end fraction
As space straight x space denotes space position comma space left square bracket straight x right square bracket space equals space straight m comma space straight i. straight e. space distance space in space metre.
Here space the space exponential comma space straight e to the power of at space must space be space dimensionless.
Hence space left square bracket straight a right square bracket equals straight s to the power of negative 1 end exponent space or space inverse space time.
or space straight a space equals space left square bracket straight M to the power of 0 space straight L to the power of 0 space straight T to the power of negative 1 end exponent space right square bracket
rightwards arrow fraction numerator open square brackets straight V subscript straight o close square brackets over denominator open square brackets straight a close square brackets end fraction space equals space open square brackets straight V subscript straight o close square brackets space straight s space equals space straight m
Hence space straight V subscript 0 space has space dimensions space of space velocity comma space straight i. straight e. space left square bracket straight V subscript 0 right square bracket equals ms to the power of negative 1 end exponent
or space straight V subscript 0 space equals space left square bracket straight M to the power of 0 space straight L to the power of 1 space straight T to the power of negative 1 end exponent right square bracket
end style

KEAM Paper 1 Mock Test - 4 - Question 41

A non-conducting rod AB of length l has a total charge q. The rod is rotated about an axis passing through its center of mass with a constant angular velocity ω as shown in the figure. The magnetic moment of the rod is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 41

KEAM Paper 1 Mock Test - 4 - Question 42

The distance between two parallel plates of a capacitor is a. A conductor of thickness b(b < a) is inserted between the plates as shown in the figure. The variation of effective capacitance between the plates of the capacitor as a function of the distance (x) is best represented by

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 42

KEAM Paper 1 Mock Test - 4 - Question 43

A solid sphere of radius R, and dielectric constant ‘k’ has spherical cavity of radius R/4. A point charge q1 is placed in the cavity. Another charge q2 is placed outside the sphere at a distance of r from q1. Then Coulombic force of interaction between them is found to be ‘F1’. When the same charges are separated by same distance in vacuum then the force of interaction between them is found to be F2 then

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 43

Coulombic force between them remains same.

Charge flown from battery = CV
Work done = CV2
Heat produced ΔH = ΔU + ΔW

KEAM Paper 1 Mock Test - 4 - Question 44

Energy stored in the capacitor in it’s steady state is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 44

Potential across capacitor is zero, hence energy stored is zero.

KEAM Paper 1 Mock Test - 4 - Question 45

A point charge of 0.1C is placed on the circumference of a non-conducting ring of radius 1m which is rotating about an axis passing from centre and perpendicular to the plane of ring with a constant angular acceleration of 1 rad/sec2. If ring starts from rest at t = 0, the magnetic field at the centre of the ring at t = 10 sec, is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 45

ω = 0 + 1 × 10 = 10 rad/sec2
∴ v = rω = 1 × 10 = 10 m/s

KEAM Paper 1 Mock Test - 4 - Question 46

In an L – C circuit shown in the figure, C = 1F, L = 4H. At time t = 0, charge in the capacitor is 4C and it is decreasing at a rate of √5 C/s. Choose the correct statements.

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 46

KEAM Paper 1 Mock Test - 4 - Question 47

A solid conducting sphere of radius r is having a charge Q and point charges +q and –q are kept at distances d from the center of sphere as shown in the figure. The electric potential at the centre of solid sphere

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 47

KEAM Paper 1 Mock Test - 4 - Question 48

Consider the circuit in the adjacent figure. What will be potential difference between A and B in the steady state

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 48

There will be no current any where in the circuit.

KEAM Paper 1 Mock Test - 4 - Question 49

A charge q is placed at some distance along the axis of a uniformly charged disc of surface charge density σ C/m2. The flux due to the charge q through the disc is ϕ. The electric force on charge q exerted by the disc is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 49


KEAM Paper 1 Mock Test - 4 - Question 50

In the given circuit diagram, find the heat generated on closing the switch S. (Initially the capacitor of capacitance C is uncharged)

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 50

Only charge is that capacitor 'C' will get charged.

KEAM Paper 1 Mock Test - 4 - Question 51

A metallic ring of radius R moves in a vertical plane in the presence of a uniform magnetic field B perpendicular to the plane of the ring. At any given instant of time its centre of mass moves with a velocity v while ring rotates in its COM frame with angular velocity ω as shown in the figure. The magnitude of induced e.m.f. between points O and P is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 51


KEAM Paper 1 Mock Test - 4 - Question 52

An object is placed at 30 cm from a convex lens of focal length 15cm. On the other side of the lens a convex mirror of focal length 12cm is placed so that the principal axis of both coincide. It is observed that the object and image coincide (autocollimation). What is the separation between the lens and mirror?

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 52

For image to be coincident, either the rays should retrace or the image due to the lens should formed just at the pole of the mirror in thin case. The image formed due to lens is at 30 cm (2f) be from the lens. Thus either this image should be at centre of curvature of the convex mirroror at the pole of the mirror. Hence 6cm or 30cm should be the separation between the lens and the mirror.

KEAM Paper 1 Mock Test - 4 - Question 53

The relation between R and r (internal resistance of the battery) for which the power consumed in the external part of the circuit is maximum

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 53

Its a wheat stone bridge with equivalent 2R.

KEAM Paper 1 Mock Test - 4 - Question 54

A capacitor and resistor are connected with an A.C. source as shown in figure. Reactance of capacitor is XC = 3W and resistance of resistor is 4Ω. Phase difference between current I and I1 is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 54

Let I2 be current in capacitor


KEAM Paper 1 Mock Test - 4 - Question 55

Find the stress at distance R/2 from centre in a uniformly charged non conducting sphere having radius R and charge density ρ.

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 55




KEAM Paper 1 Mock Test - 4 - Question 56

The capacitor is initially uncharged. Find ratio of current through the 10 Ω resistance and through the 20 Ω resistance initially.

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 56


KEAM Paper 1 Mock Test - 4 - Question 57

In the diagram below, light is incident on the interface between media 1 and 2 as shown and is totally reflected. The light is then also totally reflected at the interface between media 1 and 3, after which it travels in a direction opposite to its initial direction. The two interfaces are perpendicular. The refractive indices are related as

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 57





∴ from (1) and (2), n12 – n22 > n32

KEAM Paper 1 Mock Test - 4 - Question 58

Which of the following transitions of He+ ion will give rise to spectral line which has same wavelength as some spectral line in hydrogen atom ?

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 58

If n2 → n1 in H (z = 1) gives λ then z n2 → z n1 gives λ in H-like ion for He+ ion, z = 2

KEAM Paper 1 Mock Test - 4 - Question 59

Two imaginary spherical surfaces of radius R and 2R respectively surround a positive point charge Q located at the center of the concentric spheres. When compared to the number of field lines N1 going through the sphere of radius R, the number of electric field lines N2 going through the sphere of radius 2R is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 59

KEAM Paper 1 Mock Test - 4 - Question 60

A radioactive sample contains two radioactive nucleus A and B having decay constant λ hr–1 and 2λ hr–1. Initially 20% of decay comes from A. How long (in hr) will it take before 50% of decay comes from A. [Take λ = ln 2]

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 60



∴ from (1) and (2) , eλt = 9
⇒ λt = 2ln3 ⇒ t = 2.

KEAM Paper 1 Mock Test - 4 - Question 61

If the nitrogen atom had electronic configuration 1s7, it would have energy lower than that of the normal ground state configuration 1s2 2s2p3, because the electrons would be closer to the nucleus, yet 1s7 is not observed because it violates

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 61

1sviolate Pauli exclusion principle, according to which an orbital cannot have more than two electrons.

KEAM Paper 1 Mock Test - 4 - Question 62

Amongst the following, the most basic compound is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 62


Lone pair is not involved in resonance, most basic. In all other cases, lone-pair of nitrogen is involved in resonance, less basic.

KEAM Paper 1 Mock Test - 4 - Question 63

How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a Ca2+

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 63

EDTA, Which has four lone pair donor oxygen atoms and two lone pair donor nitrogen atoms in each molecule forms complex with Ca2+ ion. EDTA is hexa due to need 1 EDTA to form octahedral completes with ca+2

KEAM Paper 1 Mock Test - 4 - Question 64

The first orbital of H is represented by  where a0 is Bohr's radius The probability of finding the electron at a distance r, from the nucleus in the region dV is

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 64

P(r) = ψ24πr2dr
4πr2dr  = dv = vol of thin spherical shell around nucleus at distance (r)

KEAM Paper 1 Mock Test - 4 - Question 65

20% of N2O4 molecules are dissociated in a sample of gas at 27C and 760 torr. Mixture has the density at equilibrium equal to:

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 65


Total Moles 1 + α at equilibrium observed Molar Mass at equilibrium

KEAM Paper 1 Mock Test - 4 - Question 66

Which of the following compounds display geometrical isomerism?

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 66


Apart from this option, the other compounds don’t show geometrical isomerism.

KEAM Paper 1 Mock Test - 4 - Question 67

Nickel (Z = 28) combines with a uninegative mono dentate ligand X- to form a paramagnetic complex [NiX4]2-.The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 67

Number of unpaired electrons = 2
Geometry = tetrahedral.

KEAM Paper 1 Mock Test - 4 - Question 68

The correct stability order of the following resonance structures is?

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 68

No. of π π bonds ∝∝ Resonance Energy ∝∝ Stability

+ve charge on electro positive element

-ve charge on electro negative element

unlike charges on adjacent atoms like charges to separate out far.

(i) Two π π bonds unlike charges on adjacent atoms

(iii) Two π π  Bonds unlike charges on adjacent undesired atoms

(ii) One π π bond unlike charges separated but on desired atoms.

(iv) One π π bond unlike charges separated but on undesired atoms

(i) > (iii) > (ii) > (iv)

KEAM Paper 1 Mock Test - 4 - Question 69

Identify Z in the sequence,

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 69


In presence of H2O2, HBr adds in anti-Markownikoffs way (peroxide effect).

KEAM Paper 1 Mock Test - 4 - Question 70

The shape of XeF4 is :

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 70



Due to presence of two lone pairs of electrons, it is square planar in shape. Lone pairs are arranged at pyramidal position as per Bent's Rule.

KEAM Paper 1 Mock Test - 4 - Question 71

(i)  Tensile strength of vulcanised rubber is almost ten times more than raw rubber.
(ii)  Elasticity of raw rubber is very high.
Choose the correct option.

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 71

Natural rubber is soft and sticky and after vulcanisation its strength increases due to cross linked formed between different 

KEAM Paper 1 Mock Test - 4 - Question 72

The correct order of reducing ability for the four successive elements Cr, Mn, Fe and Co is: Their Eored values are given below.

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 72

The values of Eored gives us an idea of the ease with which metals get reduced. A higher negative value implies that it has greater tendency to get oxidised. 

For a metal to act as a reducing agent, it should itself get oxidised. Hence, the order of reducing ability is proportional to ease of oxidation which is inversly proportional to Eored
Hence, the answer will be:
Mn > Cr > Fe > Co

KEAM Paper 1 Mock Test - 4 - Question 73

An unknown alkyl halide (A) reacts with alcoholic KOH to produce a hydrocarbon (C4H8) as the major product. Ozonolysis of the hydrocarbon affords one mole of propanaldehyde and one mole of formaldehyde. Suggest which organic compound among the following has the correct structure of the above alkyl halide (A)?

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 73

Since the product on ozonolysis is propanaldehyde and formaldehyde, it implies that the the double bond is shared between C1 and C2.

If the compound were option 1, the result of such elimination would have been 2 butene whose ozonolysis would give ethanals

1- butene on ozonolysis gives propanaldehyde and formaldehyde thus the hydrocarbon is
CH3CH2CH = CH2 
(C4H8) 1-butene
1 butene can be obtained by

KEAM Paper 1 Mock Test - 4 - Question 74

Which one of the following reactions of Xenon compounds is not feasible?

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 74

The reaction XeO3+6HF⟶XeF6+3H2O is not feasible because XeFformed will further produce XeO3 by getting hydrolysed.
XeF6 + H2O → XeOF4 + 2HF
XeOF4 + H2O → XeO2F2 + 2HF
XeO2F+ H2O → XeO3 + 2HF

KEAM Paper 1 Mock Test - 4 - Question 75

One mole of a non-ideal gas undergoes a change of state(2.0 atm, 3.0 L, 95 K) ⟶ (4.0 atm, 5.0 L, 245 K) with a change in internal energy, ΔE = 30.0 L-atm. The change in enthalpy (ΔH) of the process in L-atm

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 75

H = E+PVH
ΔH = ΔE+Δ(PV)
= ΔE+(P2V2−P1V1)
= 30.0+(4×5−2×3)
= 30.0+14.0
= 44 L atm.

KEAM Paper 1 Mock Test - 4 - Question 76

How many moles of KMnO4 are needed to oxidise a mixture of 1 mole each of FeSO4, FeC2O4 and Fe2(C2O4)3 completely in acidic medium :

Detailed Solution for KEAM Paper 1 Mock Test - 4 - Question 76


Equialents of {FeSO4 + Fe(C2O4) + Fe2 (C2O4)3}
= {1 x1 + 1 x 3 + 1 x 6} = 10 Equialents

Equialents of KMnO4 = 10 Equialents 
Moles of KMnO4 = 10/5 = 2 Moles

KEAM Paper 1 Mock Test - 4 - Question 77