Structure of Atoms - Solved Test Series, Questions Bank with Hints and Solutions for NEET-UG (AIIMS, JIPMER), JEE Main (IIT), BITSAT, NEST

Structure of Atoms | Atomic Structure

Solved MCQ Test Series for NTA-NEET, JEE Main & Advanced, IIT, AIIMS, JIPMER, WBJEE, BITSAT : Structure of Atoms (Atomic Structure)
Here you get carefully prepared another Set of 10 MCQ practice questions (Q.No.31 - 40) in our each Test Series with hints & solutions (given at the end) from the Chemistry chapter - Structure of Atoms.
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Practising with our test series questions will certainly enhance your level of confidence for NEET-UG, JEE Main & Advanced (IIT) AIIMS, JIPMER, COMEDK, WBJEE, MBBS Admission Tests, Engineering Entrance Exams, NEST and other such competitive exams.

Syllabus:
Sub-atomic Particles; Discovery of Fundamental Particles; Cathode Rays; Positive Rays; Rutherford Model; Moseley Experiment - Atomic Number; Isotopes and Isobars; Concept of Shells and Sub-shells; Electromagnetic Radiations; Emission Spectra; Hydrogen Spectrum; Atomic Models; Bohr’s Model of Atom; Sommerfeld’s Extension of Bohr Theory; Dual Nature of Matter and Light; Heisenberg Uncertainty Principle; Wave Mechanical Model of Atom; Concept of Orbital; Quantum Mechanical Model of Atom; Shapes of s, p and d Orbitals; Pauli’s Exclusion Principle; Aufbau Principlr; Hund’s Rule of Maximum Multiplicity (Orbital Diagrams); Electronic Configuration of Elements; Photoelectric Effect; Nuclear Stability; The Whole Number Rule and Packing Fraction; The Magic Numbers.  
     
ISS Chemistry Solutions: Atomic Structure | Structure of Atoms
Multiple Choice Questions (MCQ Test Series) – Set 4 (Q. No.31-40)

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Question 31: Among the first lines of Lyman, Balmer, Paschen and Brackett series in hydrogen atomic spectra, which has higher energy?
a. Lyman
b. Balmer
c. Paschen
d. Brackett

Question 32: What will be the longest wavelength line in Balmer series of spectrum?
a. 546 nm
b. 656 nm
c. 566 nm
d. 556 nm

Question 33: If the electronic configuration of nitrogen had 1s7, it would have energy lower than that of the normal ground state configuration 1s22s22p3 because the electrons would be closer to the nucleus. Yet 1s7 is not observed because it violates:
a. Heisenberg uncertainty principle
b. Hund’s rule
c. Pauli’s exclusion principle
d. Bohr postulates of stationary orbits

Question 34: Calculate wavelength of 3rd line of Brackett series in hydrogen spectrum












Question 35: The ratio of 2nd, 4th and 6th orbits of hydrogen atom is:
a. 2: 4: 6
b. 1: 4: 9
c. 1: 4: 6
d. 1: 2: 3

Question 36: Among the following which one is not paramagnetic? [Atomic numbers; Be = 4, Ne = 10, As = 33, Cl = 17]
a. Ne2+
b. Be+
c. Cl-
d. As+

Question 37: The first use of quantum theory to explain the structure of atom was made by –
a. Planck
b. Einstein
c. Bohr
d. Heisenberg

Question 38: Total number of spectral lines in UV region, during transition from 5th excited state to 1st excited state
a. 10
b. 3
c. 4
d. Zero

Question 39: A helium molecule is moving with a velocity of 2.40 x 102 ms-1 at 300k. The de-Broglie wavelength is about
a. 0.416 nm
b. 0.83 nm
c. 803 Å
d. 8000 Å

Question 40: Which of the following does not form a part of Bohr’s model of hydrogen atom?
a. Energy of the electron in the orbit is quantized
b. The electron in the orbit nearest to the nucleus has the lowest energy
c. Angular momentum of the electrons in the orbit is quantised
d. The position and velocity of the electrons in the orbit cannot be determined simultaneously

India Study Solution - Solved Chemistry Objective Test Series
Atomic Structure (Structure of Atoms)
Solutions of Multiple Choice Questions Test Series (MCQ) – Set 4 (Q. No. 31 – 40)
Answer 31: (a).   Answer 32: (b).   Answer 33: (c).   Answer 34: (a).   Answer 35: (b).   Answer 36: (c).   Answer 37: (c).   Answer 38: (d).   Answer 39: (a).   Answer 40: (d).


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Work, Energy and Power - Test Series and Practice Questions with Hints, Solutions for NEET (AIIMS, JIPMER), JEE Main, JEE Advanced (IIT), NEST

Work, Energy and Power

Solved Test Series for NEET, JEE Main & Advanced, IIT, AIIMS, JIPMER, WBJEE : Work, Energy and Power

Here you get carefully prepared another Set of 10 MCQ practice questions (Q.No.11 - 20) in our each Test Series with hints & solutions (given at the end) from the Physics chapter - Work, Energy and Power.


Practising with our test series questions will certainly enhance your level of confidence for NEET-UG, JEE Main & Advanced (IIT) AIIMS, JIPMER, COMEDK, WBJEE, MBBS Admission Tests, Engineering Entrance Exams, NEST and other such competitive exams.

Syllabus :
Work done by a constant force and by a variable force, Unit of Work, Energy and Power, Work Energy, Theorem. Elastic and in-elastic collisions in one and two dimensions, Notions of Work and Energy, Law of Conservation of Energy, Potential and Kinetic Energies, Gravitational Potential Energy, and its conversion to Kinetic energy, Potential Energy of a spring. Conservative and Non-conservative Forces, Different forms of Energy, Three types of Equilibrium, Mass-Energy equivalence. Power.   
Solved MCQ Test Series – Set 2 (Q. No. 11-20)
Question 11: The potential energy of a particle varies with distance ‘x’ as shown in the graph below.
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The force acting on the particle is zero at -
a. C         b. B
c. B & C  d. A & D

Question 12: A box of mass 1kg is pulled on a horizontal plane of length 1m by a force of 8N then it is raised vertically to a height of 2m, the net work done is,
a. 28J    b. 8J
c. 18J    d. None of the above

Question 13: Two bodies of masses m1 and m2 have equal momenta. Their K.E. are in ratio -
a. √m2 : √m1   
b. m1 : m2
c. m2 : m1
d. m12 : m12




Question 14: The potential energy of a long spring when stretched by 2cm is ‘U’. If the same spring is stretched by 8cm the potential energy stored in it is -  
a. 4U    b. 8U
c. 16U  d. U/4

Question 15: Work done by frictional force is always -
a. zero             b. negative
c. positive        d. may be either positive, negative or zero

Question 16: The relationship between force and position is shown in the adjacent figure. The work done by the force in displacing a body from x = 1cm to x = 5cm is,
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a. 20 ergs    b. 60 ergs
c. 70 ergs    d. 700 ergs

Question 17: When momentum of a body is increased by 200%, its kinetic energy also increases by -
a. 200%      b. 400%
c. 350%      d. 800%

Question 18: Velocity - Time graph of a particle mass 2 kg moving in a straight line is as shown in figure. Work done by all the forced on the particle is -  
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a. 400J
b. – 400J
c. – 200J
d. 200J.

Question 19: A spring of force const 800 N/m is extended by 5cm. The work done in extending it from 5cm to 15cm is -   
a. 16J     b. 8J
c. 32J     d. 24J

Question 20: The average power required to lift a 100kg mass through a height of 50m in approximately 50 seconds would be -
a. 50J/s    b. 5000J/s
c. 100J/s  d. 980J/s

India Study Solution
Physics Solutions for NEET, JEE Main, IIT, AIIMS, JIPMER
Work, Energy and Power
Hints / Solutions of Physics MCQ Test Series – Set 2 (Q. No.11–20)
Answer 11: c. (dU/dx = 0 at B & C). Answer 12: a. Answer 13: d.
Answer 14: c. Hint:













Answer 15: d. Answer 16: a. Answer 17: d. Answer 18: b.
Answer 19: b.
 







Answer 20: d.
(Hint: Average Power = (100 x 9.8 x 50) ÷ 50 = 980 J/s)

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Work, Energy and Power - Solved Test Series, Questions Bank with Hints, Solutions for NEET (AIIMS, JIPMER), JEE Main, JEE Advanced (IIT), NEST

Physics Solutions for NEET, JEE Main, IIT, AIIMS, JIPMER, WBJEE : Work, Energy and Power
Here you will get carefully selected 10 MCQ practice questions in our each Test Series with hints & solutions (given at the end) from the Physics chapter - Work, Energy and Power.
All these are typically important questions for NEET-UG, JEE Main & Advanced (IIT) AIIMS, JIPMER, COMEDK, WBJEE, MBBS Admission Tests, Engineering Entrance Exams, NEST and other such competitive exams.
Topics / Syllabus for IIT JEE Main & Advanced, NEET (AIPMT, JIPMER):
Work done by a constant force and by a variable force, Unit of Work, Energy and Power, Work Energy, Theorem. Elastic and in-elastic collisions in one and two dimensions, Notions of Work and Energy, Law of Conservations of Energy, Potential and Kinetic Energies, Gravitational Potential Energy, and its conversion to Kinetic energy, Potential Energy of a spring. Conservative and Non-conservative Forces, Different forms of Energy, Three types of Equilibrium, Mass - Energy equivalence. Power.   
Solved MCQ Test Series – Set 1 (Q. No. 1-10)
Question 1: The figures below represent the total potential energy ‘U’ of a function of the inter-atomic distance ‘r’. Which diagram corresponds to stable molecules found in nature -  

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Question 2: A 50kg man with 20kg load on his headclimbs up 20 steps of 0.25m height each. The work done by the man on the block during climbing is -  
a. 5J        b. 350J
c. 1000J  d. 3540J

Question 3: In the case of conservative force -
a. work done is independent of path
b. work done in a close loop is zero
c. work done against conservative force is stored in the form of potential energy
d. all the above.

Question 4: A man is sitting on a swing at a maximum height of 5m above the ground. When the swing passes through the mean position which is 2m above the ground its velocity will be approximately -
a. 7.6 m/s     b. 9.8 m/s
c. 6.26 m/s   d. 98 m/s.

Question 5: A body loses half of its velocity on penetrating 6cm in a wooden block. How much will it penetrate more before coming to rest?  
a. 1cm     b. 2cm
c. 3cm     d. 4cm

Question 6: The work done by all the forces (external & internal) on a system equals to the change in -  
a. only kinetic energy
b. only potential energy
c. total energy
d. none of these





Question 7: For the path PQR in a conservative force field as shown in figure, the amount of work done in carrying a body from P to Q and from Q to R are 5J and 2J respectively. The work done in carrying the body from P to R will be equal to -
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a. 7J        b. 3J
c. √21J    d. zero

Question 8: A block of mass ‘m’ is lowered with the help of a rope of negligible mass through a distance ‘d’ with an acceleration of g/3. Work done by the on the block is,








Question 9: A particle of mass ‘m’ at rest is acted upon by a force ‘F’ for time ‘t’. The kinetic energy of the particle after an interval ‘t’ is -    
a. F2t2/m        b. (Ft)2/2m
c. (Ft)2/3m     d. Ft/2m

Question 10: A man tries to push a wall and fails to displace it. He does -
a. negative work    b. positive work
c. no work              d. none of these

India Study Solution
Physics Practice Questions for NEET, JEE Main, IIT, AIIMS, JIPMER: 
Work, Energy and Power
Hints & Solutions of MCQ Test Series – Set 1 (Q. No.1–10)
Answer 1: a. (Hint: Among four diagrams in this diagram, ‘U’ is minimum for some value of ‘r’). Answer 2: c. (W = 20 x 10 x 20 x 0.25 = 1000J) Answer 3: d. Answer 4: a. Answer 5: b. Answer 6: a. Answer 7: a.
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Answer 8: b. Answer 9: b.
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Answer 10: c.
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