1.
The Nucleus of helium contains
2.
Anode rays were discovered by
3.
Positive ions are formed from the neutral atom by the
4.
The nucleus of the atom consist of
5.
Nuclei tend to have more neutrons than protons at high mask numbers because
6.
Penetration power of proton is
7.
The atomic number of an element is 35 and mass number is 81 the number of electron in outermost Shell is
8.
The ratio of charge and mass would be greater for
9.
Rutherford scattering experiment is related to size of
10.
lightest fundamental particle is
11.
Atom was discovered by
12.
alpha particles are represented by
13.
Which of the following particle have more electron than Neutron
14.
Neutron are found in atoms of all elements except in
15.
Proton was discovered by
16.
The proton and neutron are collectively called as
17.
An element has 8 electrons in the valence shell
18.
The fundamental particles present in the nucleus of an atom are
19.
Electromagnetic radiation with maximum wave length is
20.
Who discovered that cathode rays are made up of elecrtrons
21.
The number of electron in one molecule of CO2
22.
Number of unpaired electrons in inert gas is
23.
The number of neutron in heavy hydrogen atom is
24.
Number of electrons in the outermost orbit of the element of atomic number 15 is
25.
The mass of an atom is constituted mainly by
26.
A neutral atom ( Atomic number > 1 ) consist of
27.
The number of electron in the nucleus of -CONH2 is
28.
Who discovered neutron ?
29.
Rutherford experiment prove
30.
An electron is moving in Bohr's forth orbit.Its de-brogile wave length is λ what is the circumference of forth orbit.
31.
Which one is the following has unit positive charge and one amu mass
33.
Which is not deflected by magnetic field.
34.
6 Proton are found in nucleus of
35.
The discovery of neutron becomes very late because
36.
Mass of neutron is approximately.............. times of mass of electron
37.
α particle is identical with
38.
The number of electron in the nucleus of C12 is
39.
The nature of anode rays depends upon
40.
What is the ratio of mass of an electron to the mass of proton
41.
An elementary particle is
43.
The number of electron in the nucleus of Cl is
45.
Nuclear theory of atom was put forward by
