No. of questions - 40
Time - 30 min
1.
The possibility of finding an electron in an orbital was conceived by:
7.
The wave nature of electron is verified by
10.
The total number of protons present in all the elements upto ′Zn′ in the periodic table is:
11.
X-rays cannot penetrate through a sheet of:
12.
Compared to the lightest atom the heaviest atom weighs:
13.
The ground state term symbol for an electronic state is governed by
14.
Threshold wavelength depends upon :
17.
According to Bohr’s model of hydrogen atom
18.
How many electrons can fit into the orbitals that comprise the 3rd quantum shell?
20.
The orbital with maximum number of possible orientations is:
21.
The de Broglie wavelength associated with a material particle is:
22.
Which consists of particle of matter?
23.
The energy of electromagnetic radiation depends on:
24.
The difference between ions and atoms is of:
25.
The number of electrons in a neutral atom of an element is equal to its:
27.
The atomic number of an element is 17. The number of orbitals containing electron pairs in the valency shell is:
29.
The atomic number of an element is 35 and its mass is 81. The number of electrons in its outermost shell is
31.
Naturally occurring elements are mixtures of:
32.
When the azimuthal quantum number has the value of 2, the number of orbitals possible are
33.
Two electron in an atm of an element cannot have:
34.
According to Dalton’s atomic theory, the smallest particle which is capable of independent existence is:
35.
In the ground state of the H-atom, the electron is
37.
The quantum number that is in no way related to other quantum number is:
