1.
The number of electron in the nucleus of -CONH2 is
2.
alpha particles are represented by
3.
Atom was discovered by
4.
What is the ratio of mass of an electron to the mass of proton
5.
Anode rays were discovered by
6.
lightest fundamental particle is
7.
Proton was discovered by
8.
Positive ions are formed from the neutral atom by the
9.
Which one is the following has unit positive charge and one amu mass
10.
An elementary particle is
11.
The number of neutron in heavy hydrogen atom is
12.
The number of electron in one molecule of CO2
13.
The atomic number of an element is 35 and mass number is 81 the number of electron in outermost Shell is
14.
The Nucleus of helium contains
15.
A neutral atom ( Atomic number > 1 ) consist of
16.
Number of electrons in the outermost orbit of the element of atomic number 15 is
17.
The discovery of neutron becomes very late because
18.
6 Proton are found in nucleus of
19.
Nuclei tend to have more neutrons than protons at high mask numbers because
20.
Number of unpaired electrons in inert gas is
21.
Electromagnetic radiation with maximum wave length is
22.
An element has 8 electrons in the valence shell
23.
The number of electron in the nucleus of C12 is
24.
The nucleus of the atom consist of
25.
The ratio of charge and mass would be greater for
26.
Rutherford scattering experiment is related to size of
27.
Mass of neutron is approximately.............. times of mass of electron
29.
Which of the following particle have more electron than Neutron
30.
The fundamental particles present in the nucleus of an atom are
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.
Rutherford experiment prove
33.
Neutron are found in atoms of all elements except in
34.
Which is not deflected by magnetic field.
35.
Who discovered that cathode rays are made up of elecrtrons
36.
α particle is identical with
37.
The number of electron in the nucleus of Cl is
38.
The proton and neutron are collectively called as
39.
Who discovered neutron ?
41.
The nature of anode rays depends upon
43.
Penetration power of proton is
44.
Nuclear theory of atom was put forward by
45.
The mass of an atom is constituted mainly by
