This page requires a JavaScript-enabled browser
Instructions on how to enable your browser are contained in the help file.
Chemistry - 9 Chapter - 4
Periodicity of Elements and Periodic Table
Test - 32
1.
Dobereiner gave law of octaves
a) FALSE
b) TRUE
2.
Lothar Mayer plotted a graph between atomic volume and atomic number
a) FALSE
b) TRUE
3.
Gallium (Ga) is solid at room temperature
a) FALSE
b) TRUE
4.
Unit of electron affinity is kJmol
-1
a) FALSE
b) TRUE
5.
Penultimate shells are outermost shells.
a) TRUE
b) FALSE
6.
Our planet earth is composed of many elements combined together in the form of
a) Mixture
b) Homogenous mixture
c) Compound
d) Hetrogenous mixture
7.
No. of electrons in the valence shell of 5th group is:
a) 3
b) 6
c) 7
d) 5
8.
Elements of VII A have following configuration in their outer shells:
a) 1 P
5
d
b) S
1
, P
6
c) S
2
, P
5
d) P
4
d
2
9.
When Aluminium reacts with oxygen on heating it forms a thin layer of aluminium oxide with formula
a) AI
2
O
3
b) AlO
2
c) Al
3
O
2
d) AIO
10.
Formula of hypochlorous acid is
a) HOCI
b) HOCl
2
c) HCI
d) H
2
Cl
This is more feedback!
This is the feedback!
