No. of questions - 40
Time - 30 min
1.
Compared to the lightest atom the heaviest atom weighs:
5.
Naturally occurring elements are mixtures of:
10.
X-rays cannot penetrate through a sheet of:
11.
Threshold wavelength depends upon :
12.
The atomic number of an element is 17. The number of orbitals containing electron pairs in the valency shell is:
13.
Two electron in an atm of an element cannot have:
14.
The orbital with maximum number of possible orientations is:
15.
According to Bohr’s model of hydrogen atom
16.
In the ground state of the H-atom, the electron is
17.
The de Broglie wavelength associated with a material particle is:
18.
The energy of electromagnetic radiation depends on:
19.
The possibility of finding an electron in an orbital was conceived by:
20.
According to Dalton’s atomic theory, the smallest particle which is capable of independent existence is:
22.
The atomic number of an element is 35 and its mass is 81. The number of electrons in its outermost shell is
23.
The ground state term symbol for an electronic state is governed by
24.
The quantum number that is in no way related to other quantum number is:
25.
Which consists of particle of matter?
26.
The number of electrons in a neutral atom of an element is equal to its:
27.
The difference between ions and atoms is of:
30.
When the azimuthal quantum number has the value of 2, the number of orbitals possible are
31.
The wave nature of electron is verified by
35.
How many electrons can fit into the orbitals that comprise the 3rd quantum shell?
37.
The total number of protons present in all the elements upto ′Zn′ in the periodic table is:
