Post by : Sachin Dabhade ( Data Science ) Recommended by Divya Chaudhari
These are the practice MCQs of the Second Term Test (TT-2) based on the Unit-2 of Shirpur Education Society, R. C. Patel Institution of Technology.
Engineering Chemistry MCQs
RCPIT Examination, Shirpur.
Type 1: Multiple Choice Question - 1 Marks
1) Heisenberg’s uncertainty principle is directly consequence of the
a) Particle nature of wave
b) wave nature of particle
c) both a) & b)
d) None of above
Ans: b)
2) According to Heisenberg's principle the uncertainty involved in the simultaneous measurement of
position and momentum of a particle is in the range of
a) Boltzmann constant
b) Avogadro Number
c) Wave number
d) Planck’s constant
Ans: d)
3) For characterizing the De-Broglie (Matter) wave following equation are used
a) Newton law equation
b) Huygens equation
c) Schrodinger equation
d) All above
Ans: c)
4) InDe-Broglie (Matter) wave following physical quantity varies periodically
a) Pressure
b) Wave function
c) Electric field
d) Magnetic field
Ans: b)
5) The periodic variation of Wave function form
a) Matter wave
b) Electromagnetic wave
c) Sound wave
d) Ultrasonic wave
Ans: a)
6) In De-Broglie wavelength is given by
a) = h/mc
b) = mc/h
c) = h/mv2
d) = h/mv
Ans: d)
7) The energy of photon is related to photon
a) Frequency
b) Size
c) Mass
d) none of above
Ans: a)
8) Dual nature [particle and wave] of matter was proposed by
a) de Broglie
b) Planck
c) Newton
d) Heisenberg
Ans: a)
9) The wavelength associate with a particle of mass ‘m’ moving with a velocity ‘v’ is [h = Planck’s
constant]
a) hmv
b) h/mv
c) mv/h
d) 1/mhv
Ans: b)
10) Which of the following is NOT a correct consequence of the Heisenberg uncertainty principle:
a) The shorter the lifetime of an excited state of an atom, the less accurately can its energy be measured.
b) An electron in an atom cannot be described by a well-defined orbit.
c) The momentum of an electron cannot be measured exactly.
d) Measurement of one variable in an atomic system can affect subsequent measurements of other
variables.
Ans:c)
11) Matter has a dual nature was proved by
a) G.P.Thomson
b) Heisenberg’s uncertainty principle
c) Schrodinger’s equation
d) De-Broglie
Ans a)
12) The time-independent Schrödinger equation
a) is a partial differential equation
b) involves only one independent variable r
c) can be derived from time-dependent Schrödinger equation
d) has solutions which are the stationary states.
Ans d)
13) A principle proposed by Heisenberg is known as
a) De-broglie principle
b) certainty principle
c) uncertainty principle
d) certainty as well as uncertainty principle
Ans c)
14) According to Heisenberg’s principle,certainty in position involves
a) Uncertainty in momentum
b) certainty in momentum
c) uncertainty in position
d) certainty in position
Ans a)
15) According to Heisenberg’s principle, the product of magnitude of two variables must be equal to
a) Schrodinger’s constant
b) De-Broglies constant
c) Heisenberg’s constant
d) Plank’s constant
Ans: d)
16) According to Heisenberg’s principle,uncertainty in velocity involves
a) Uncertainty in momentum
b) certainty in momentum
c) uncertainty in position
d) certainty in position
Ans d)
17) According to Schrodinger a particle is equivalent to a
a) Single wave
b) Wave packet
c) Light Wave
d) Cannot behave as Wave
Ans b)
18) The speed of electron is measured within an uncertainty of 2× 104 m/s .The minimum space required by
electron to be confined in an atom is
a) >=0.555×10-10m
b) >=0.579×10-10m
c) <=0.579×10-10m
d) >=0.579×10-11m
Ans b)
19) An electron is confined in a box of length 10-8m .Calculate minimum uncertainty in its velocity
a) 1.595×103
m/sec
b) 1.595×104
m/sec
c) 1.695×103
m/sec
d) 1.695×104
m/sec
Ans a)
20) An electron has a speed of 400m/sec with uncertainty of 0.01%.Find the accuracy in its position
a) 2.985×10-4
m
b) 2.895×10-4m
c) 2.985×10-3m
d) 2.895×10-3m
Ans b)
21) The de Broglie wavelength of an object
a) is equal to Plank’s constant divided by the momentum of the object
b) is significant only if the object is moving at 1% of the speed of light or faster
c) cannot be determined accurately for any subatomic particle
d) increases as the velocity of particle increases
Ans a)
22) Uncertainty principle can be easily understood by
a) Dalton’s Effect
b) Compton’s Effect
c) Electron Effect
d) None
Ans b)
23) The De-Broglie wavelength of matter wave is
a) Inversely proportional to K.E.
b) Inversely proportional to square of K.E.
c) Inversely proportional to square root of K.E.
d) All of above
Ans: c)
25) The De-Broglie wavelength of proton is less than
a) Electron
b) Neutron
c) Atom
d) molecule
Ans: a)
26) The De-Broglie wavelength of electron accelerated by 100 Volt is
a) 12 Ao
b) 1.22 Ao
c) 0.122 Ao
d) 10 Ao
Ans: b)
26) For characterizing the De-Broglie (Matter) wave following equation areused
a) Maxwell equation
b) Heisenberg’s uncertainty principle
c) Schrodinger’s equation
d) All of above
Ans: c)
25) Inmatter wave following physical quantity varies periodically
a) Pressure
b) Wave function
c) Electric field
d) Magnetic field
Ans: b)
27) According to Heisenberg’s principle error has been involved in simultaneous measurement of
momentum and position of particle associated with wave is due to
a) Instrumental error
b) Human error
c) Intrinsic nature of matter
d) All of above
Ans: c)
28) The SI unit of Planck constant is
a) J-S
b) J/S
c) V/m2
d) Ohm-m
Ans: a)
29) The simultaneous measurement of following parameter obeys Heisenberg’s uncertainty principle
a) Position and momentum
b) Energy and time
c) Both a) and b)
d) Only a)
Ans: c)
30) The phase velocity (Vp) of matter is
a) Greater than velocity of light
b) Less than velocity of light
c) Equal to velocity of light
d) Equal to velocity of particle
Ans: a)
31) The group velocity (Vg) of matter is
a) Equal to velocity of light
b) Equal to velocity of particle
c) Greater than velocity of light
d) Less than velocity of particle
Ans: b)
32) The probability of finding the particle is depend on
a) Wave function
b) Mass of particle
c) Momentum of particle
d) Square of magnitude of wave function
Ans: d)
33) The operator 2
[del square] is called _______ operator
a) Hamiltonian
b) Laplacian
c) Poisson
d) vecto
Ans: b)
34) That radiation and matter have properties both of particles and of waves is called what?
a) Mixing
b) Confusion
c) Wave-particle duality
d) Entanglement
Ans: c)
35) In quantum mechanics, the angular momentum of a particle is called what?
a) Spin
b) Orbital
c) Swirl
d) Rotation
Ans: a)
36) When particle inside the box, the potential is maximum at x=
a) L
b) 2L
c) L/2
d) 3L
Ans: a)
37) The wave nature of light can be proved by using ……………. .
a) Interference
b) Photoelectric
c) Compton effect
d) None of above
Ans: a)
38) The wave nature of light can be proved by using ……………..
a) Photoelectriceffect
b) Diffraction
c) Compton effect
d) None of above
Ans: b)
39) The wave nature of light can be proved by using …………….
a) Photoelectric effect
b) Compton effect
c) Polarization
d) None of above
Ans: c)
40) The particle nature of light can be proved by using …………….
a) Photoelectric effect
b) Interference
c) Diffraction
d) None of above
Ans: a)
41) The particle nature of light can be proved by using …………….
a) Polarization
b) Interference
c) Diffraction
d) Compton effect
Ans: a)
42) The theoretical law of Photoelectric effect was predicted by scientist ……….
a) de-Broglie
b) Max Plank’s
c) Einstein
d) None of above
Ans: c)
43) When Einstein received the Nobel Prizein physics for predicting the law of Photoelectric effect.
a) 1921
b) 1924
c) 1911
d) None of above
Ans: a)
44) When de-Broglie received the Nobel Prize for his hypothesis.
a) 1921
b) 1924
c) 1929
d) None of above
Ans: c)
45) Louis-Victor de-Broglie formulatedde-Broglie hypothesis inyear.
a) 1921
b) 1924
c) 1929
d) None of above
Ans: b)
46) De-Brogliewavelength for matter wave is given by equation.
a) λ = h/p
b) λ = h/mp
c) λ = h/mE
d) None of above
Ans: a)
47) The wave nature can be characterized by physical quantity
a) Mass
b) Frequency
c) Velocity
d) Momentum
Ans: b)
48) The wave nature can be characterized by physical quantity
a) Mass
b) Velocity
c) Wavelength
d) Momentum
Ans: c)
49) The wave nature can be characterized by physical quantity
a) Momentum
b) Velocity
c) Mass
d) Amplitude
Ans: d)
50) The particle nature can be characterized by physical quantity
a) Momentum
b) Wavelength
c) Frequency
d) Amplitude
Ans: a)
51) The particle nature can be characterized by physical quantity
a) Amplitude
b) Wavelength
c) Frequency
d) Mass
Ans: d)
52) The particle nature can be characterized by physical quantity
a) Amplitude
b) Velocity
c) Frequency
d) Wavelength
Ans: b)
53) The Direct evidence of the existence of de Broglie wave was proved by experiment
a) Photoelectric effect
b) Interference
c) Davission&Germer’s
d) Diffraction
Ans: c)
54) The De-Broglie wavelength is inversely proportional to
a) Mass
b) Velocity
c) Both a) & b)
d) None of above
Ans: c)
55) The De-Broglie wavelength is inversely proportional to
a) Mass
b) Amplitude
c) Both a) & b)
d) Frequency
Ans: a)
56) The De-Broglie wavelength is inversely proportional to
a) Amplitude
b) Velocity
c) Both a) & b)
d) Frequency
Ans: b)
57) The De-Broglie wavelength is inversely proportional to
a) Mass
b) Velocity
c) Momentum
d) All of the above
Ans: d)
58) Lighter is particle ……….. is the wavelength associated with it.
a) Greater
b) Zero
c) Smaller
d) None of above
Ans: a)
59) Heavy is particle ……….. is the wavelength associated with it.
a) Greater
b) Zero
c) Smaller
d) None of above
Ans: c)
60) Smaller is the velocity of particle ……….. is the wavelength associated with it.
a) Zero
b) Greater
c) Smaller
d) None of above
Ans: b)
61) Larger is the velocity of particle ……….. is the wavelength associated with it.
a) Smaller
b) Greater
c) Smaller
d) None of above
Ans: a)
62) Matter wave is guide the matter particle therefore it known as ………..
a) Electromagnetic wave
b) Pilot wave
c) Both a) & b)
d) None of above
Ans: b)
63) Uncertainty principle gave the concept of
a) An orbital
b) Probability
c) Wavelength
d) Nothing
Ans: b)
64) The velocity with which particular phase of the wave propagated in the medium is known as .
………..
a) Phase velocity
b) Group velocity
c) Both a) & b)
d) None of above
Ans: a)
65) The velocity with which group of the wave travelling in the medium is known as . ………..
a) Phase velocity
b) Group velocity
c) Both a) & b)
d) None of above
Ans: b)
66) The phase velocity is given by equation . ………..
a) vp = w / k
b) vp = k / w
c) vp = 1 / wk
d) None of above
Ans: a)
67) The groupvelocity is given by equation . ………..
a) vg = dw . dk
b) vg = dk / dw
c) vg = dw / dk
d) None of above
Ans: c)
68) The phase velocity is given by equation . ………..
a) vp = c
2
.v
b) vp = c2
/ v
c) vp = 1 / c2
v
d) None of above
Ans: b)
69) Quantum computing is _________ than classical computing
a) Difference
b) Slower
c) Faster
d) Less
Ans: c)
70) Which of the following makes Qubit different than a classical bit?
a) Superposition of state
b) Entanglement
c) Both Superposition of state and Entanglement
d) No difference
Ans: c)
71) Unlike a bit, the Qubit can be in both 0 and 1 state (superposition of both 0 and 1 states)
a) True
b) False
Ans: a)
72) A Qubit is a _________ quantum mechanical system.
a) 2-state
b) 3-state
c) 4-state
d) 1-state
Ans: b)
74) The uncertainty in momentum involved
a) Uncertainty in velocity
b) Uncertainty in mass
c) Both a) and b)
d) None of above
Ans: a)
75) The experimental proof for Heisenberg’s uncertainty principle is
a) Schrodinger equation
b) Photoelectric effect
c) Single slit electron diffraction
d) Black body radiation
Ans: c)
76) In the 1-D potential well of infinite potential energy at boundary so the value of wave function
outside the well is
a) Zero
b) Infinite
c) Finite
d) Undetermined
Ans: a)
77) In the 1-D potential well of infinite potential energy at boundary so the value of wave function inside
the well is
a) Zero
b) Infinite
c) Finite
d) Undetermined
Ans: c)
78) In the 1-D potential well the energy of the particle inside the well is
a) Continuous
b) Zero
c) Complex
d) Discrete
Ans: d)
79) The lowest energy of an electron 1-D potential well having length 1 Ao
is
a) 90 eV
b) 120 eV
c) 38 eV
d) 10 eV
Ans: c)
80) The energy of an electron in 1-D potential well having length 1 Ao
and n = 2 is
a) 90 eV
b) 152 eV
c) 38 eV
d) 10 eV
Ans: b)
81) The uncertainty in the position of particle is equal to its wavelength then uncertainty in its velocity is
equal to its
a) Velocity
b) Double the velocity
c) Half the velocity
d) All of above
Ans: a)
82) The De-Broglie wavelength of proton accelerated by 100 Volt is
a) 1 Ao
b) 100Ao
c) 5Ao
d) 0.04Ao
Ans: d)
83) In a single slit electron diffraction experiment the uncertainty in the position of an electron is equal to
a) Half the size of slit
b) Double the size of slit
c) Size of slit
d) All of above
Ans: c)
84) According to Einstein’s the light is propagated in the form of packet is known as
a) Photon
b) Phonon
c) Both a) and b)
d) None of the above
Ans: a)
85) The electron does not exist in nucleus is successfully proved by
a) Black body radiation
b) Heisenberg’s principle
c) Photoelectric effect
d) Newton’s law
Ans: b)
86) Quantum computer consisting
a) Serial computation
b) Complex computation
c) Inherent parallelism
d) All of the above
Ans: b)
87) In 1-D infinite potential well where the value of wave function is finite
a) Inside the 1-D infinite potential well
b) Outside the 1-D infinite potential well
c) At the boundary of the 1-D infinite potential well
d) All of the above
Ans: a)
88) In 1-D infinite potential well where the value of wave function is infinite
a) Inside the 1-D infinite potential well
b) Outside the 1-D infinite potential well
c) At the boundary of the 1-D infinite potential well
d) Both b) and c)
Ans: d)
89) The single slit electron diffraction experiment gives electron having
a) Particle nature
b) Wave nature
c) Both a) and b)
d) None of the above
Ans: b)
90) The unit of the de Broglie wavelength is
a) Ao
b) m3
c) J
d) mA
Ans: a)
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