RUHS BPT 2022 Question Paper

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RUHS Entrance Examination 2022
Question Paper
BPT 2022
Q. No. 1 The dimensional formula of Magnetic moment is, [Given, mass=M, length=L, time=T,
0032001 Current=A]

Q. No. 2
0032002

Q. No. 3 An object is thrown at a speed of 56 ms-1 in a direction 45 degree above the
0032003 horizontal. After how much time the object will return to the initial level?
Option A 5.6 s

Option B 7.2 s

Option C 7.6 s
Option D 8.1 s

Q. No. 4 A uniform chain of length 'x' is placed on a horizontal table, such that half of its length
0032004 is hanging over one edge. Calculate the velocity with which it will leave the table
when released from the rest.

Q. No. 5 Two men 'A' and 'B' take 4 s and 6 s, respectively to lift an object to the same height
0032005 'x', calculate the ratio of their power.

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Option A 2:3
Option B 3:2
Option C 1:6

Option D 2:5

Q. No. 6 Calculate the minimum velocity with which a body of mass 'ma' must enter a vertical
0032006 loop of radius 'x', so that it will complete the loop properly.

Q. No. 7 An object is dropped from height 'x0', if the coefficient of restitution is 'e', then what
0032007 will be the height (x1) after one bounce?

Option A x1=e4x0

Option B x1=e2x0

Option C x1=e0/e2

Option D x1=e0/e

Q. No. 8 The moment of inertia of a ring about its diameter is 'MI'. Calculate the moment of
0032008 inertia of the same ring about an axis perpendicular to its plane and passing through
the centre.

Option A 4M1

Option B M1/4

Option C 2M1

Option D M1/2

Q. No. 9 A metallic ring of radius 0.5 m and mass 1 kg is rotating about its diameter with
0032009 angular velocity of 20 rad s-1. Calculate its kinetic energy.
Option A 25 J
Option B 250 J
Option C 10 J
Option D 100 J

Q. No. 10 The escape velocity from a planet of mass Mp is ve. If the mass is increased to 16
0032010 times and its radius is increases to 8 times, then what will be the new escape
velocity?

Q. No. 11 An artificial satellite of mass 'm' is moving around the earth in a circular orbit. If the
0032011 speed of the satellite is equal to half of the escape velocity from the earth, then

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calculate the height of the satellite from the earth surface. [Given, radius of the
earth=R]
Option A R/4
Option B R
Option C R/2
Option D 2R

Q. No. 12 The escape velocity of an object from the surface of the earth is [Given, radius of the
0032012 earth=R]

Q. No. 13
0032013

Q. No. 14
0032014

Option A 6
Option B 12
Option C 5
Option D 10

Q. No. 15
0032015 In practice, The Poisson's ratio of a material lies between

Q. No. 16
0032016 Which is not a unit of Young's modulus?

Option A Mega pascal

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Option B N.m -2

Option C Dyne.cm-2

Option D N.m-1

Q. No. 17
0032017

Q. No. 18
The water rises in a plant is due to
0032018
Option A osmosis
Option B fluid pressure
Option C viscosity
Option D capillarity

Q. No. 19 Find out the dimensional formula of entropy. [In terms of mass (M), length (L), time
0032019 (T) and temperature (K)]

Option A [ML2T-2K-1]

Option B [ML2T-2K-2]

Option C [MLT-1K-1]

Option D [ML3T-1K-1]

Q. No. 20 The mean free path of molecules of gas is proportional to? [Given, radius of the
0032020 molecule is r]

Option A 1/r3

Option B 1/r2
Option C 1/r
Option D r

Q. No. 21
The specific heat of an ideal gas during an isothermal process is
0032021

Option C zero
Option D infinite

Q. No.
22

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0032022

Option A 16p
Option B p/64
Option C 32p
Option D 64p
Correct
B
Option

Q. No.
23
0032023

Option A 40 sec
Option B 42 sec
Option C 48 sec
Option D 50 sec
Correct
B
Option

Q. No.
24
0032024

Option A 350 ms-1

Option B 250 ms-1

Option C 100 ms-1

Option D 200 ms-1

Correct
B
Option

Q. No.
25
0032025

Correct
C
Option

Q. No. 26
Which of the following wave requires a medium to travel?
0032026
Option A X-rays
Option B Ultrasound
Option C Infrared radiation

Option D Microwave radiation
Correct Option B

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Q. No. 27 What is the flux through a cube of side t , if a point charge of 'Q' is placed at one of
' '
0032027 the corners.

Q. No. 28 If two charges +4e and +e are at a distance 'd' apart, then at what distance charge 'Q'
0032028 must be placed from +e, so that it is in equilibrium?
Option A d/2
Option B d/3
Option C 3d/4
Option D 2d/3

Q. No.
29
0032029

Correct
A
Option

Q. No. 30 What is the dimension of mobility of charge carriers? [Given, mass=M, length=L,
0032030 time=T, Current=A]

Option A [M-1T1A1]

Option B [M-1T2A-1]

Option C [M1T1A1]

Option D [M-1T2A1]

Q. No.
31
0032031

Option A 1.6 A
Option B 3.2 A
Option C 4.8 A
Option D 6 A
Correct
B
Option

Q. No. 32 Two wires of the same material but of different diameters carry the same current 'i'.
0032032 If the ratio of their diameters is 2:1, then the corresponding ratio of mean drift
velocities will be?
Option A 2:1

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Option B 4:1
Option C 1:4
Option D 1:2

Q. No. 33
0032033

Q. No. 34
Which of the ray shows greenhouse effect?
0032034
Option A Ultra violet rays
Option B Infrared rays
Option C X - rays
Option D Visible rays

Q. No. 35 A coil of wire has 200 turns and has a self-inductance of 300 mH. The self-inductance
0032035 of a second coil of 300 turns will be
Option A 650 mH
Option B 700 mH
Option C 775 mH
Option D 675 mH

Q. No. 36 If a steel wire of length 'L' and magnetic moment 'M' is bent into a semi-circular arc,
0032036 what will be the new magnetic moment

Q. No. 37 What is the phase difference between the flux linked with a coil rotating in a uniform
0032037 magnetic field and induced emf in it?

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Q. No. 38 The induced emf in a coil of 2 H inductance in which current varies from 9 A to 4 A in
0032038 0.2 sec is
Option A 50 V
Option B 100 V
Option C 125 V

Option D 150 V

Q. No. 39 If L, R, and C denotes the inductance, resistance and capacitance respectively then
0032039 which combination does not have the dimension of frequency?

Q. No. 40
0032040

Q. No. 41 In an L-C-R series resonant circuit, the capacitance is changed from C to 4C. To keep
0032041 the resonant frequency same, the inductance should be changed from L to
Option A L/2
Option B 2L
Option C 4L
Option D L/4

Q. No. 42
What is the SI unit of Poynting vector? [Given, W=watt, J=Joule, s= sec, m=meter]
0032042

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Q. No. 43
0032043

Q. No. 44 In vacuum, to travel distance 'd' light takes time 't' and in a medium to travel distance
0032044 '5d', it takes time 'T'. Calculate the critical angle of the medium.

Q. No. 45 If the focal length of a mirror is 50 cm, then where should the object be placed, so
0032045 that the image is two times and inverted?
Option A 55 cm
Option B 75 cm
Option C -75 cm
Option D -50 cm

Q. No. 46
0032046

Option A 330 nm
Option B 400 nm
Option C 440 nm
Option D 500 nm

Q. No. 47
0032047

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Q. No. 48 If two slits in Young's experiment are 0.4 mm apart and fringe width on a screen 200
0032048 cm away is 2 mm. What is the wavelength of the light?
Option A 300 nm
Option B 400 nm
Option C 440 nm
Option D 500 nm

Q. No. 49 If 'KE' be the kinetic energy and 'm' the mass of a moving particle, then the de-Broglie
0032049 wavelength of the particle is

Q. No. 50 The masses of two particles having same kinetic energies are in the ratio 1:3. Then
0032050 their de-Broglie wavelengths are in the ratio

Q. No. 51
The molecule which contain at least one unpaired electron is called.
0062051
Option A Ylide
Option B Cation
Option C Free Radical
Option D Atom

Q. No. 52 The density of a solution prepared by dissolving 120 g of urea (mol.mass = 60 u) in
0062052 1000 g of water is 1.15 g/mL. The molarity of this solution is:
Option A 1.2 M
Option B 0.50 M
Option C 3.05 M
Option D 2.05 M

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Q. No. 53
What is the number of moles of solute in 300 mL of a 0.6 M solution
0062053

Option A 0.58
Option B 0.18
Option C 0.38
Option D 0.08

Q. No. 54
Azimuthal quantum number determines the
0062054
Option A Size

Option B Spin
Option C Angular momentum of orbitals
Option D Orientation

Q. No. 55
________ has the atomic number 27
0062055
Option A Co
Option B Te

Option C Xe
Option D Br

Q. No. 56
The total number of orbitals in a shell having principal quantum n is
0062056

Option A 2n

Option B n2

Option C 2n2
Option D N+1

Q. No. 57
The lowest bond order among the following is in ____
0062057

Option A N2

Option B O2

Option C O2-

Option D O22-

Q. No. 58 What is the shape, geometry and hybridization in SiH4
0062058
Option A Tetrahedral, sp3
Option B Bent, sp3

Option C Pyramidal, sp2d3
Option D Trigonal bipyramidal, sp3

Q. No. 59
The line spectrum of hydrogen obtained in the visible region of light corresponds to
0062059
Option A Balmer series
Option B Lyman series
Option C Paschen series
Option D Brackett series

Q. No. 60
Who proposed the concept of dispersion force ?
0062060
Option A Fritz London
Option B Van der waal

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Option C Heitler
Option D Gay Lussac

Q. No.
61
0062061

Option A 100 KJ
Option B 0 KJ
Option C 10 KJ
Option D 1 KJ
Correct
C
Option

Q. No. 62 Which Thermodynamic process where preassure is not exchanged with the
0062062 surroundings is
Option A Isothermal
Option B Adiabatic
Option C Isobaric
Option D Isotropic

Q. No. 63
Among the following the weakest Bronsted base is
0062063

Option A F-

Option B Cl-

Option C Br-

Option D I-

Q. No. 64 The oxidation state of chromium in [Cr (PPh3) (CO)3] is
0062064
Option A +3
Option B -2
Option C 0
Option D +5

Q. No. 65
The pH of a 0.005 M aqueous solution of sulphuric acid is
0062065
Option A 2
Option B 0.005
Option C 1
Option D 0.01

Q. No. 66
The oxidation number of Xe in BaXeO6?is
0062066
Option A +6
Option B +8
Option C +10
Option D +12

Q. No. 67
The freezing point of heavy water is
0062067

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Q. No. 68
Hydrogen bond energy is equal to
0062068
Option A 3-30 Kcal

Option B 3-7 cal
Option C 30-70 cal
Option D 30-70 Kcal

Q. No. 69
0062069 Which of the following is most abundant in the earth's crust?

Option A Thallium
Option B Boron
Option C Gallium
Option D Aluminium

Q. No. 70
Which one of these are main components of kidney stones?
0062070
Option A Na2C2O4
Option B K2C2O4
Option C CaC2O4

Option D MgC2O4

Q. No. 71
_____ do not show any hydrogen bonding network
0062071

Option A CO2

Option B H2O

Option C NH3

Option D HF

Q. No. 72
The boiling points of hydrides of group 16 are in the order
0062072

Option A H2O > H2Te > H2S > H2Se

Option B H2O > H2S > H2Se > H2Te

Option C H2O > H2Te > H2Se > H2S

Option D H2Te > H2O > H2S > H2Se

Q. No. 73 IUPAC name of CH3COCH(CH3)2
0062073
Option A 3-methyl-2-butanone
Option B 4-methylisopropyl ketone
Option C 2-methyl-3-butanone
Option D 1,1-dimethyl butan-2-one

Q. No. 74
What is the state of hybridisation of carbon in carbanion?
0062074

Option A sp2

Option B sp3
Option C sp

Option D sp3d2

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Q. No. 75
Which of the following is a Anti-aromatic compound
0062075

Q. No. 76
The increasing order of reducing power of the halogen acids is
0062076
Option A HF < HCl < HBr < HI
Option B HI < HCl < HBr < HF
Option C HF < HBr < HCl < HI
Option D HI < HBr < HCl < HF

Q. No. 77
LPG mainly contains
0062077
Option A Butane
Option B Ethane

Option C Methane
Option D ethyne

Q. No. 78
The coordination number in hcp is
0062078
Option A 8
Option B 6
Option C 4
Option D 12

Q. No. 79 An element (atomic mass = 100 g / mol) having bcc structure has unit cell edge 400
0062079 pm. Then, density of the element is
Option A 10.376 g/cc
Option B 5.188 g/cc
Option C 7.289 g/cc
Option D 2.144 g/cc

Q. No. 80
People add sodium chloride to water while boiling eggs. This is to
0062080
Option A Decrease the boiling point of water
Option B Increase the boiling point of water
Option C Prevent the breaking of eggs
Option D Make the eggs tasty

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Q. No. 81 Which of the following units is useful in relating concentration of solution with its
0062081 vapour pressure
Option A Parts per million
Option B Mole fraction
Option C Mass percentage
Option D Molarity

Q. No.
82
0062082

Option A 1.25 V
Option B -1.25 V
Option C 1.75 V
Option D 2.0?V
Correct
C
Option

Q. No. 83
The process of separating a crstalloid, from a colloid by filtration is called
0062083
Option A Emulsification
Option B Dialysis
Option C Coagulation
Option D Peptization

Q. No. 84
The formation of micelles takes place only above
0062084

Option A Boyle's temperature
Option B Critical temperature
Option C Kraft temperature
Option D Inversion temperature

Q. No.
85
0062085

Correct
D
Option

Q. No. 86
The protective power of lyophilic colloidal sol is expressed in terms of
0062086
Option A Coagulation value
Option B Gold number
Option C CMC
Option D Oxidation number

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Q. No. 87 Which of the following metals is leached by Cyanide process?
0062087
Option A Ag
Option B Na
Option C Al
Option D Cu

Q. No. 88
The addition of HCN to carbonyl compounds is an example of
0062088
Option A Nucleophilic addition
Option B Electrophilic addition
Option C Free radical addition
Option D Electromeric addition

Q. No. 89
Methyl ketones are usually characterised through
0062089

Option A Tollen's Reagent
Option B Iodoform test

Option C Schiff's Reagent
Option D Hunsdicker test

Q. No. 90
What is the effective atomic number of Ni (CO)4
0062090
Option A 36
Option B 34
Option C 38
Option D 30

Q. No.
91
0062091

Option A KMnO4

Option B Zn-Cu/ H2O2

Option C NaOH

Option D CrO2Cl2

Correct
D
Option

Q. No. 92
0062092

Option A Aldehyde
Option B Ketone
Option C Carboxylic acid
Option D Amine

Q. No. 93
In a Alodol condensation reaction enolate of aldehyde or ketone is converted into ___
0062093

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Q. No. 94
What is the most common oxidation state of lanthanides?
0062094
Option A +2
Option B +4
Option C +6
Option D +3

Q. No. 95
0062095

Q. No. 96 The most convenient method to prepare primary (i Amine) amine containing one
0062096 carbon atom less is
Option A Gabriel Phthalimide Synthesis
Option B Reductive amination of aldehyde
Option C Hofmann Bromide reaction
Option D Reduction of isonitriles

Q. No. 97
0062097

Option A Benzamide and Aniline
Option B Benzamide and chlorobenzene
Option C Acetamide and phenol
Option D Acetamide and chlorobenzene

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Q. No. 98
TX-100 is _________ surfactants r
0062098
Option A Cationic
Option B Anionic
Option C Neutral
Option D Dianionic

Q. No. 99
The deficiency in Vitamin- C causes
0062099
Option A Scurvy
Option B Rickets
Option C Pyorrhea
Option D Anaemia

Q. No. 100
Haemoglobin is
0062100
Option A Vitamin
Option B Carbohydrate
Option C Enzyme
Option D Globular Protein

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