Neutral radiations are
α – Rays
β- Rays
γ-Rays
X– Rays
When aluminium is bombarded by an α-particle,
radio phosphorous is formed
radio aluminium is formed
radio sulphur is formed
radio carbon is formed
The inner most shell of an atom is
K – shell
L- shell
M- shell
N- shell
The smallest unit of an element is called
molecule
ion
atom
neucleus
1 MeV equals
1.6x10-13 J
1.6x10-23 J
2.42x1045 J
3.2x10-23 J
1 amu is equal to
9.8 MeV
931.5 Mev
9.31 Mev
93.1 MeV
The age of ancient biological material is determined by using
Ionizing power
Radio Carbon-dating
Radio activity
Radio therapy
Atom of an element is
positively charged
nutral
negatively charged
indivisible
The mass-energy relation was proposed by
Thomson
Rutherford
Bohr
Einstein
Which among the following is true ?
A=Z+N
A=2Z
A=Z+2N
A= (Z+N)2
