Collection of verified questions for Paramanu Sanrachna under General Science. Includes previous year exam questions with official answer keys and step-by-step solutions.
The constituents of an atomic nucleus are-
Which of the following statements is correct regarding atomic structure?
Which of the following carries a negative charge?
Which of the following is NOT a constituent particle of an atom?
An alpha particle carries two positive charges. Its mass is approximately equal to that of-
Who discovered the neutron in an atom?
Which of the following pairs is a particle-antiparticle pair?
Radioactivity was discovered by-
With reference to the atom of a chemical element, magnetic quantum number relates to-
The number of neutrons in the nucleus of plutonium nuclide ($_{94}\text{Pu}^{242}$) is -
Which of the following particles is chargeless (neutral)?
The same kind of atoms are found in which of the following?
Radioactivity is measured by-
Atoms which have the same number of protons but different number of neutrons are called-
The nucleus of helium consists of-
The positively charged part of the center of an atom is called -
Which of the following particles has zero charge?
An atom of an element has two protons, two neutrons and two electrons. What is the mass number of that element?
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. Phonon Code:
The number of electrons and neutrons in an element is 18 and 20 respectively. Its mass number is-
An isotope of an atomic nucleus is that nucleus in which-
Who discovered the atomic nucleus?
The order of filling of orbitals in an atom is governed by-
Which of the following is an isotonic (isotones) group?
Which one of the following is NOT a subatomic particle?