1.
Choose the incorrect relation on the basis of Bohr's theory
2.
-rays were discovered by :
3.
Two electrons in the same orbital may be identified with:
4.
An electron has principal quantum number 3. The number of its (i) subshells and (ii) orbitals would be respectively:
5.
Maximum number of electrons in a subshell of an atom is determined by the following:
6.
Particle having mass 200 times that of an electron is:
7.
Which of the following has the maximum number of unpaired electrons?
8.
An electron from one Bohr stationary orbit can go to next higher orbit
9.
How many neutrons are present in tritium nucleus?
10.
The number of wave made by an electron moving in an orbit having maximum magnetic quantum number is :