No. of questions - 40
Time - 30 min
1.
The total number of protons present in all the elements upto ′Zn′ in the periodic table is:
3.
According to Dalton’s atomic theory, the smallest particle which is capable of independent existence is:
4.
In the ground state of the H-atom, the electron is
7.
The atomic number of an element is 35 and its mass is 81. The number of electrons in its outermost shell is
13.
How many electrons can fit into the orbitals that comprise the 3rd quantum shell?
15.
The de Broglie wavelength associated with a material particle is:
16.
Naturally occurring elements are mixtures of:
17.
Compared to the lightest atom the heaviest atom weighs:
19.
Threshold wavelength depends upon :
21.
The quantum number that is in no way related to other quantum number is:
22.
Two electron in an atm of an element cannot have:
23.
X-rays cannot penetrate through a sheet of:
24.
The atomic number of an element is 17. The number of orbitals containing electron pairs in the valency shell is:
26.
The number of electrons in a neutral atom of an element is equal to its:
28.
Which consists of particle of matter?
29.
The wave nature of electron is verified by
32.
The energy of electromagnetic radiation depends on:
33.
The possibility of finding an electron in an orbital was conceived by:
35.
According to Bohr’s model of hydrogen atom
36.
The orbital with maximum number of possible orientations is:
37.
The ground state term symbol for an electronic state is governed by
38.
The difference between ions and atoms is of:
40.
When the azimuthal quantum number has the value of 2, the number of orbitals possible are
