Question 1. Which of the following is not a part of an atom?
Question 2. A single type of atom is found in _______.
(B) Mixture of minerals
(C)Compounds of minerals
(D) None of the above
Question 3. Constituents of atomic nucleus are _________.
(A) Proton and neutron
(B) Electron and proton
(C) Electron and neutron
(D) Proton, neutron and electron
Question 4. Which of the following statement about molecular structure is correct?
(A) Proton, neutron and electron all are inside the nucleus
(B) Proton and neutron are inside the nucleus and electrons revolve around the nucleus
(C) Electron and proton are inside the nucleus and neutron revolve around the nucleus
(D) Neutron and electron are found inside the nucleus and protons revolves around the nucleus
Question 5. The atomic nucleus was discovered by _________.
Question 6. Radioactivity was discovered by ________.
(A) Madam Curie
Question 7. Isotopes are those atoms of the same element which have _________.
(A) None of the above
(B) Atomic number and atoms mass both are same
(C) Atomic mass is different but atomic number is same
(D) Atomic mass is same but atomic number is different
Question 8. Isotopes is that nuclei of atomic nucleus in which?
(A) Number of both protons and neutrons is different
(B) Number of both protons and neutrons is same
(C) Number of protons is same but number of neutrons is different
(D) Number of neutrons is same but number of protons is different
Question 9. The isoneutronic group, in the following is ________.
(A) 6C14, 7N15, 8O16
(B) 6C14, 7N14, 8O16
(C) 6C12, 7N14, 8N18
(D) 6C12, 7N14, 8O16
Question 10. Radioactivity is measured by _________.
(C) Geiger Counter
Question 11. Match List-I with List-II and select the correct answer using the code given below the lists.
|List-I (Characteristic)||List-II (Particle)|
|(a) Zero mass||1. Positron|
|(b) Fractional charge||2. Neutrino|
|(c) Fractional spin||3. Quark|
|(d) Integral spin||4. Photon|
Question 12. The atoms, in which the number of protons is same but the number of neutrons is different, are known asf ?
Question 13. What is the mass number of an element, the atom of which contains two protons, two neutrons and two electrons?
Question 14. Regarding the atom of a chemical element, the magnetic quantum number refers to?
Question 15. In an atom, the order of filling up of the orbitals is governed by?
(A) Pauli’s exclusion principle
(B) Hund’s rule
(C) Heisenberg’s uncertainty principle
(D) Aufbau’s principle
Question 16. Which of the following carries a negative charge?
(A) Gamma rays
(B) Beta particles
(C) Alpha particles
Question 17. The Nucleus of Helium has?
(A) One proton and two neutrons
(B) Two protons and two neutrons
(C) Two protons
(D) Only one neutron
Question 18. The alpha particle carries two positive charges. Its mass is very nearly equal to that of?
(A) Two positrons are each positron carries a single positive charge
(B) Sum of masses of two positrons and two neutrons
(C) An atom of helium
(D) Two protons
Question 19. Which one of the following pairs constitutes particle-antiparticle pair?
Question 20. Which of the following is not a subatomic particle?
Question 21. In atom, neutron was discovered by?
(D) J.J. Thomson