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Showing posts with label Structure of Atoms. Show all posts
Showing posts with label Structure of Atoms. Show all posts

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

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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.
Go to previous Test Series:

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).


Atomic Structure | Structure of Atoms - More Practice Questions 


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Atomic Structure | Structure of Atoms - Solved MCQ Test Series for IITJEE, NEET and other Entrance Exams

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India Study Solution MCQ Test Series (Multiple Choice Questions) expected in NEET, IIT JEE, Medical and Engineering Entrance Exams; Admission Tests. 
(Click on the link at the end to download Hints and Answers in Pdf format.)

Chemistry MCQ Test Series Objective Questions on Atomic Structure / Structure of Atoms 

www.indiastudysolution.com graphicsSub-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.       

Chemistry Objective Questions: Atomic Structure | Structure of Atom
Multiple Choice Questions (MCQ Test Series) – Set 3 (Q. No.21-30)

Question 21: If the wavelength of an electromagnetic radiation is 2000 Å, what is the energy in ergs?
a. 9.94 x 10-12
b. 9.94 x 10-10
c. 4.97 x 10-12
d. 4.97 x 10-19

Question 22: Who first time ruled out the existence of definite paths of electron?
a. de Broglie
b. Heisenberg
c. Neils Bohr
d. Einstein

Question 23: An atom has x energy level then total number of lines in its spectrum are:
a. 1 + 2 + 3………(x + 1)
b. 1 + 2 + 3………(x)2
c. 1 + 2 + 3………(x – 1)
d. (x + 1) (x + 2) (x + 4)

Question 24: Bohr advanced the idea of:
a. Stationary electrons
b. Stationary nucleus
c. Stationary orbits
d. Elliptical orbits

Question 25: Brackett series is produced when the electrons from outer orbits jump to
a. Third orbit
b. Second orbit
c. Fourth orbit
d. Fifth orbit

Question 26: No. of visible lines when an electron returns from 5th orbit to ground state in H spectrum:
a. 5
b. 4
c. 3
d. 10

Question 27: Who modified Bohr Theory by introducing elliptical orbits for electron path?
a. Hund
b. Thomson
c. Rutherford
d. Sommerfeld

Question 28: The main energy shell in which the electron is present is given by –
a. Principal quantum number
b. Azimuthal quantum number
c. Spin quantum number
d. Magnetic quantum number

Question 29: Which of the following is not permissible?
a. n = 4, l = 3, m = 0
b. n = 4, l = 2, m = 1
c. n = 4, l = 4, m = 1
d. n = 4, l = 0, m = 0

Question 30: The longest wavelength in Balmer series is –
a. 6563 Å
b. 18,650 Å
c. 7700 Å
d. 3,600 Å




India Study Solution - Solved Chemistry Objective Questions
Atomic Structure (Structure of Atom)
Solutions of Multiple Choice Questions Test Series (MCQ) – Set 3 (Q. No. 21 – 30)
Answer 21: (a).   Answer 22: (b).   Answer 23: (c).   Answer 24: (c).   Answer 25: (c).   Answer 26: (c).   Answer 27: (d).   Answer 28: (a).   Answer 29: (c).   Answer 30: (a).

 Atomic Structure | Structure of Atoms - More Practice Questions 

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Structure of Atoms: Chemistry MCQ practice questions with solutions for MBBS Admission Tests, Engineering Entrance Exams, IITJEE, NEET, NAT, IIST (ISAT) and other competitive examinations

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Chemistry >> Atomic Structure
Chemistry MCQ and practice questions on selected important topics from the chapter “Atomic Structure” or “Structure of Atoms” intended for Medical and Engineering aspirants like IITJEE, NEET, MBBS Admission Tests, NAT (National Aptitude Test), ISAT (IIST Admission Test) and other competitive examinations.

Chemistry MCQ Practice Questions on Atomic Structure / Structure of Atoms :(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.        

Chemistry Objective Questions Answers: Atomic Structure or Structure of Atom
MCQ Test Series (Multiple Choice Questions) – Set 1 (Q. No. 1-10)
(Click on the link at the end to download answers in Pdf)
Question 1: Cathode rays are:
a. Electromagnetic waves
b. Stream of α – particles
c. Stream of electrons
d. Radiations

Question 2: According to Bohr’s model, if the kinetic energy of an electron in 2nd orbit of He+ is x, then what should be the ionisation energy of the electron revolving in 3rd orbit of M5+ ion
a. x
b. 4x
c. x/4
d. 2x

Question 3: When α-rays strike a thin gold foil then
a. Most of the α-rays do not pass through the gold foil
b. Most of the α-rays get reflected back
c. Most of the α-rays get deflected through small angles
d. Most of the α-rays pass through without any deviation

Question 4: Atomic number is equal to the
a. Number of neutrons in the nucleus
b. Number of protons in the nucleus
c. Sum of protons and neutrons
d. Atomic mass of the element

Question 5: Charge on a positron is equal to that of:
a. Proton
b. Electron
c. Nucleon
d. Neutron

Question 6: An atom differs from its ion in
a. Nuclear charge
b. Mass number
c. Number of electrons
d. Number of neutrons

Question 7: The correct sequence of frequency of the electromagnetic radiations in electromagnetic spectrum is –
a. X-rays > UV rays > Microwaves > Radio waves
b. Radio waves > Microwaves > UV rays > X-rays
c. UV rays > X-rays > Radio waves > Microwaves
d. Radio waves > Microwaves > X-rays > UV rays

Question 8: Rutherford’s scattering experiment is related to the size of the:
a. Nucleus
b. Atom
c. Electron
d. Neutron

Question 9: The number of nodal planes in a px orbital is:
a. One
b. Two
c. Three
d. Four

Question 10: Which of the following statements is false:
a. The energy of red photon is more than the energy of violet photon
b. The momentum of photon is inversely proportional to its wave length
c. The energy of a photon is inversely proportional to its wave length
d. The particle nature of electromagnetic radiations is able to explain the photoelectric effect

View/ Download Answers [pdf]

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Chemistry - Atomic Structure: Prepare and Practice for Medical, Engineering Entrance Exams, NEET, IITJEE, NAT, IIST-ISAT and Admission Tests | Online Free Preparation

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Chemistry MCQ Practice Questions on Atomic Structure / Structure of Atoms :
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.       

Solved Chemistry MCQ Test Series: Atomic Structure or Structure of Atom
Multiple Choice Questions (MCQs) – Set 2 (Q. No. 11-20)

Question 11: Atomic number of an electron represents:
a. Number of neutrons in the nucleus
b. Atomic mass of an element
c. Valency of an element
d. Number of protons in the nucleus

Question 12: Radius of Bohr’s orbit of hydrogen atom is –
a. 0.24 Å
b. 0.48 Å
c. 0.53 Å
d. 1.06 Å

Question 13: Rutherford’s alpha ray scattering experiment showed for the first time that the atom has –
a. Nucleus
b. Proton
c. Electron
d. Neutron

Question 14: Principal quantum number of an atom represents
a. Size of the orbital
b. Spin angular momentum
c. Orbital angular momentum
d. Space orientation of the orbital 

Question 15: The number of unpaired electrons in magnesium atom is –
a. 0
b. 1
c. 2
d. 3

Question 16: How many photons of light having a wavelength of 5000 Å are necessary to provide 1 joule of energy?
a. 2.8 x 1018 photons
b. 2.5 x 1017 photons
c. 2.5 x 1018 photons
d. 2.6 x 1014 photons

Question 17: When alpha particles are sent through a thin metal foil, most of them go straight through the foil because
a. Alpha particles are much heavier than electrons
b. Alpha particles are positively charged
c. Most part of the atom is empty
d. Alpha particles move with high velocity

Question 18: Discovery of the nucleus of an atom was due to the experiment carried out by:
a. Bohr
b. Rutherford
c. Moseley
d. Thomson

Question 19: The species which has its fifth ionisation potential equal to 340 V is –
a. B+
b. C+
c. B
d. C

Question 20: The energy of a photon is inversely proportional to its –
a. Wavelength
b. Frequency
c. Wave number
d. Velocity

 India Study Solution - Solved Chemistry MCQ Test Series
Atomic Structure (Structure of Atom)
Solutions of Multiple Choice Questions (MCQ Test Series) – Set 2 (Q. No. 11 – 20)

Answer 11: (d).   Answer 12: (c).   Answer 13: (a).   Answer 14: (a).   Answer 15: (a).   Answer 16: (c).   Answer 17: (c).   Answer 18: (c).   Answer 19: (c).   Answer 20: (a).


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