Atomic Structure Class 11 MCQ Questions NEET. We covered all the Atomic Structure Class 11 MCQ Questions NEET in this post for free so that you can practice well for the exam.
Install our MCQTUBE Android app from the Google Play Store and prepare for any competitive government exams for free.
These types of competitive MCQs appear in the exams like SSC, Railways, Defence, CDS, NDA, State PSC & CSE Exams, etc. We created all the competitive exam MCQs into several small posts on our website for your convenience.
You will get their respective links in the related posts section provided below.
Related Posts:
- Structure of Atom Questions for NEET
- Structure of Atom MCQ for NEET
- Structure of Atom NEET Questions
MCQ on Atomic Structure Class 11 for NEET Students
In an atom, the order of filling up of the orbitals is governed by
(a) Aufbau’s principle
(b) Heisenberg’s uncertainty principle
(c) Hund’s rule
(d) Pauli’s exclusion principle
Option a – Aufbau’s principle
A radioactive substance has a half-life of four months. Three-fourths of the substance would decay in
(a) 3 months
(b) 4 months
(c) 8 months
(d) 12 months
Option c – 8 months
Which one of the following is NOT radioactive?
(a) Astatine
(b) Francium
(c) Tritium
(d) Zirconium
Option d – Zirconium
Regarding the atom of a chemical element, the magnetic quantum number refers to
(a) orientation
(b) shape
(c) size
(d) spin
Option a – orientation
Which one of the following statements is correct?
(a) Liquid sodium is employed as a coolant in nuclear reactors.
(b) Calcium carbonate is an ingredient of toothpaste.
(c) Bordeaux mixture consists of sodium sulphate and lime.
(d) Zinc amalgams are used as dental fillings.
Option a – Liquid sodium is employed as a coolant in nuclear reactors.
The function of heavy water in a nuclear reactor is to :
(a) slow down the speed of neutrons
(b) increase the speed of neutrons
(c) cool down the reactor
(d) stop the nuclear reaction
Option a – slow down the speed of neutrons
In the gamma decay of a nucleus
(a) the mass number of the nucleus changes whereas its atomic number does not change
(b) the mass number of the nucleus does not change whereas its atomic number changes
(c) both the mass number and the atomic number of the nucleus change
(d) neither the mass number nor the atomic number of the nucleus changes
Option d – neither the mass number nor the atomic number of the nucleus changes
Consider the following statements: 1. The chain reaction process is used in nuclear bombs to release a vast amount of energy, but in nuclear reactors, there is no chain reaction. 2. In a nuclear reactor, the reaction is controlled while in nuclear bombs, the reaction is uncontrolled. 3. In a nuclear reactor, all operating reactors are ‘critical’, while there is no question of ‘criticality’ in the case of a nuclear bomb. 4. Nuclear reactors do not use moderators, while nuclear bombs use them. Which of the above statements about the operational principles of a nuclear reactor and a nuclear bomb is/are correct?
(a) 1 and 3
(b) 2 and 3
(c) 4 only
(d) 1 and 4
Option b – 2 and 3
Which one of the following elements will be an isobar of calcium if the atomic number of calcium is 20 and its mass number is 40?
(a) Element with 20 protons and 18 neutrons
(b) Element with 18 protons and 19 neutrons
(c) Element with 20 protons and 19 neutrons
(d) Element with 18 protons and 22 neutrons
Option d – Element with 18 protons and 22 neutrons
A sample of oxygen contains two isotopes of oxygen with masses 16 u and 18 u respectively. The proportion of these isotopes in the sample is 3: 1. What will be the average atomic mass of oxygen in this sample?
(a) 17.5 u
(b) 17 u
(c) 16 u
(d) 16.5 u
Option d – 16.5 u
In which categories did Marie Curie win her two different Nobel prizes?
(b) Chemistry and Medicine
(c) Physics and Medicine
(d) Chemistry and Peace
Which of the following statements is/are correct? According to Dalton’s theory A. An atom is the smallest particle of matter B. An atom is the smallest particle of element C. An atom is the smallest indivisible particle of an element that can take part in a chemical change D. An atom is a radioactive emission
(a) A, B, and C
(b) B, C, and D
(c) A, C, and D
(d) A and D
Option a – A, B, and C
What is the number of mole(s) of H₂(g) required to saturate one-mole benzene?
(a) 1
(b) 2
(c) 3
(d) 4
Option c – 3
How many moles of hydrogen atoms are present in one mole of Aluminium hydroxide?
(a) one mole
(b) Two moles
(c) Three moles
(d) Four moles
Option c – Three moles
Which one among the following transitions of electron of hydrogen atom emits radiation of the shortest wavelength?
(a) n = 2 to n = 1
(b) n = 3 to n = 2
(c) n = 4 to n = 3
(d) n = 5 to n = 4
Option a – n = 2 to n = 1
Most explosions in mines occur due to the mixing of
(a) hydrogen with oxygen
(b) oxygen with acetylene
(c) methane with air
(d) carbon dioxide with ethane
Option c – methane with air
What mass of hydrogen and oxygen will be produced on complete electrolysis of 18g of water?
(a) 2g hydrogen and 32g oxygen
(b) 2g hydrogen and 16g oxygen
(c) 4g hydrogen and 32g oxygen
(d) 4g hydrogen and 14g oxygen
Option b – 2g hydrogen and 16g oxygen
A body is charged negatively. It implies that
(a) it has lost some of its protons
(b) it has acquired some electrons from outside
(c) it has lost some of its electrons
(d) None of the above
Option b – it has acquired some electrons from outside
Which one of the following reactions is the main cause of the energy radiation from the Sun?
(a) Fusion reaction
(b) Fission reaction
(c) Chemical reaction
(d) Diffusion reaction
Option a – Fusion reaction
In an atomic explosion, the release of a large amount of energy is due to the conversion of
(a) chemical energy into nuclear energy
(b) nuclear energy into heat
Option a – chemical energy into nuclear energy
In Tritium (T), the number of protons (P) and neutrons (N) respectively are
(a) 1 P and 1 N
(b) IP and 2 N
(c) 1 Pand 3 N
(d) 2 P and 1 N
Option b – IP and 2 N
The atomic theory of matter was first proposed by
(a) John Dalton
(b) Rutherford
(c) J. J. Thomson
(d) Niels Bohr
Option a – John Dalton
We covered all the atomic structure class 11 MCQ questions neet above in this post for free so that you can practice well for the exam.
Check out the latest MCQ content by visiting our mcqtube website homepage.
Also, check out:
