1.
Which one is the following has unit positive charge and one amu mass
2.
Penetration power of proton is
3.
The number of electron in the nucleus of C12 is
4.
Nuclear theory of atom was put forward by
5.
The number of electron in one molecule of CO2
6.
The number of electron in the nucleus of -CONH2 is
7.
6 Proton are found in nucleus of
8.
Proton was discovered by
10.
An elementary particle is
11.
The ratio of charge and mass would be greater for
12.
The nature of anode rays depends upon
13.
Which is not deflected by magnetic field.
14.
The mass of an atom is constituted mainly by
16.
The atomic number of an element is 35 and mass number is 81 the number of electron in outermost Shell is
17.
Positive ions are formed from the neutral atom by the
18.
Anode rays were discovered by
19.
The number of neutron in heavy hydrogen atom is
20.
The Nucleus of helium contains
21.
The proton and neutron are collectively called as
22.
The discovery of neutron becomes very late because
23.
Neutron are found in atoms of all elements except in
24.
The fundamental particles present in the nucleus of an atom are
25.
Nuclei tend to have more neutrons than protons at high mask numbers because
26.
An element has 8 electrons in the valence shell
27.
Number of unpaired electrons in inert gas is
28.
Who discovered that cathode rays are made up of elecrtrons
29.
lightest fundamental particle is
30.
What is the ratio of mass of an electron to the mass of proton
31.
An electron is moving in Bohr's forth orbit.Its de-brogile wave length is λ what is the circumference of forth orbit.
32.
The number of electron in the nucleus of Cl is
33.
α particle is identical with
34.
Rutherford scattering experiment is related to size of
35.
Which of the following particle have more electron than Neutron
36.
Who discovered neutron ?
37.
Number of electrons in the outermost orbit of the element of atomic number 15 is
38.
Rutherford experiment prove
39.
Atom was discovered by
40.
The nucleus of the atom consist of
42.
alpha particles are represented by
43.
Mass of neutron is approximately.............. times of mass of electron
44.
Electromagnetic radiation with maximum wave length is
45.
A neutral atom ( Atomic number > 1 ) consist of
