General Science | Chemistry | Atomic Structure
General Science | Chemistry | Atomic Structure
1. Which of the following is not a part of an atom?
Electron
Proton
Neutron
Photon
Correct Answer
Wrong Answer
2. A single type of atom is found in
Compounds of minerals
Mixture of minerals
Native elements
None of the above
Correct Answer
Wrong Answer
3. Constituents of atomic nucleus are
Electron and proton
Electron and neutron
Proton and neutron
Proton, neutron and electron
Correct Answer
Wrong Answer
4. Which of the following statement about molecular structure is correct?
Neutron and electron are found inside the nucleus and protons revolves around the nucleus
Electron and proton are inside the nucleus and neutron revolve around the nucleus
Proton and neutron are inside the nucleus and electrons revolve around the nucleus
Proton, neutron and electron all are inside the nucleus
Correct Answer
Wrong Answer
5. The atomic nucleus was discovered by
Rutherford
Dalton
Einstein
Thomson
Correct Answer
Wrong Answer
6. In atom, neutron was discovered by
J.J. Thomson
Chadwick
Rutherford
Newton
Correct Answer
Wrong Answer
7. Which of the following is not a subatomic particle?
Neutron
Proton
Deuteron
Electron
Correct Answer
Wrong Answer
8. Which one of the following pairs constitutes particle-antiparticle pair?
Electron-Positron
Proton-Neutron
Photon-Electron
Neutron-Neutrino
Correct Answer
Wrong Answer
9. The alpha particle carries two positive charges. Its mass is very nearly equal to that of
Two protons
An atom of helium
Sum of masses of two positrons and two neutrons
Two positrons are each positron carries a single positive charge
Correct Answer
Wrong Answer
10. The Nucleus of Helium has
Only one neutron
Two protons
Two protons and two neutrons
One proton and two neutrons
Correct Answer
Wrong Answer
11. Which of the following carries a negative charge?
X-rays
Alpha particles
Beta particles
Gamma rays
Correct Answer
Wrong Answer
12. In an atom, the order of filling up of the orbitals is governed by
Aufbau's principle
Heisenberg's uncertainty principle
Hund's rule
Pauli's exclusion principle
Correct Answer
Wrong Answer
13. Regarding the atom of a chemical element, the magnetic quantum number refers to
Orientation
Shape
Size
Spin
Correct Answer
Wrong Answer
14. What is the mass number of an element, the atom of which contains two protons, two neutrons and two electrons?
2
4
6
8
Correct Answer
Wrong Answer
15. The atoms, in which the number of protons is same but the number of neutrons is different, are known as
Isobars
Isomers
Isotones
Isotopes
Correct Answer
Wrong Answer
16. Radioactivity was discovered by
Rutherford
Becquerel
Bohr
Madam Curie
Correct Answer
Wrong Answer
17. Isotopes are those atoms of the same element which have
Atomic mass is same but atomic number is different
Atomic mass is different but atomic number is same
Atomic number and atoms mass both are same
None of the above
Correct Answer
Wrong Answer
18. Isotopes is that nuclei of atomic nucleus in which
Number of neutrons is same but number of protons is different
Number of protons is same but number of neutrons is different
Number of both protons and neutrons is same
Number of both protons and neutrons is different
Correct Answer
Wrong Answer
19. Radioactivity is measured by
Hydrometer
Geiger Counter
Seismometer
Ammeter
