Fundamental Particles of Atom Worksheet
Fundamental particles of atom
Atom is a small unit of matter which consists of a dense nucleus surrounded by a negatively charged electrons. Atomic nucleus contains a mix of protons and neutrons. Protons are positively charged whereas, neutrons are electrically neutral.
Some of the important questions and answers related to fundamental particles of atom are listed below.
1. Which is not correct about electrons?
(a) Discovered by Chedwick
(b) Named by J.L. Stoney
(c) Present inside the nucleus
(d) It has maximum e / m ratio
2. Neutron was discovered late mainly because:
(a) It is unstable
(b) It is neutral or chargeless
(c) It is heavier
(d) All of these
3. Which atom does not have any neutron?
(d) None of these
4. The ratio of e / m of p and is:
(a) 1 : 2
(b) 2 : 1
(c) 1 : 3
(d) 1 : 1
5. Which is not correctly matched:
(a) Particle nature of is given by Bohr
(b) The heaviest sub-atomic particle neutron among
(c) Electron is non fundamental particle
(d) Outside the nucleus neutron is unstable
6. Which is incorrect statement here?
(a) has unit –ve charge
(b) is called anti electron
(c) is also written as
(d) M have +ve value of e / m
1. (c) 2. (b) 3. (a) 4. (b) 5. (c) 6. (d)
- Atomic Model Atomic model An atom is the defined as the smallest...
- Group Displacement Law Worksheet Group displacement law, series, units, number of Group displacement law...
- Radioactive Decay Radioactive decay Radioactive decay is the process in which an...
- Atoms and Molecules Worksheets Atoms and Molecules worksheets The atom is a unit of...
- Fusion, Fission Fusion, fission, isotopes, isobars Atoms are the buldig blocks...