No. of questions - 40
Time - 30 min
1.
Naturally occurring elements are mixtures of:
2.
The atomic number of an element is 17. The number of orbitals containing electron pairs in the valency shell is:
3.
The number of electrons in a neutral atom of an element is equal to its:
4.
In the ground state of the H-atom, the electron is
6.
When the azimuthal quantum number has the value of 2, the number of orbitals possible are
7.
The total number of protons present in all the elements upto ′Zn′ in the periodic table is:
8.
The atomic number of an element is 35 and its mass is 81. The number of electrons in its outermost shell is
9.
How many electrons can fit into the orbitals that comprise the 3rd quantum shell?
10.
The wave nature of electron is verified by
11.
The energy of electromagnetic radiation depends on:
13.
The difference between ions and atoms is of:
14.
According to Bohr’s model of hydrogen atom
15.
Compared to the lightest atom the heaviest atom weighs:
17.
Which consists of particle of matter?
19.
Two electron in an atm of an element cannot have:
20.
The orbital with maximum number of possible orientations is:
23.
The possibility of finding an electron in an orbital was conceived by:
25.
The quantum number that is in no way related to other quantum number is:
28.
The ground state term symbol for an electronic state is governed by
32.
According to Dalton’s atomic theory, the smallest particle which is capable of independent existence is:
33.
Threshold wavelength depends upon :
36.
The de Broglie wavelength associated with a material particle is:
37.
X-rays cannot penetrate through a sheet of:
