WorksheetsChemistry 20.07.2021 - 10 MCQs
Total questions: 10
Worksheet time: 5mins
Newland’s Law of Octaves is applicable till
P
Na
Ca
K
Demerits of modern periodic table
Position of Hydrogen is not certain
Position of Isotopes is not certain
Position of Lanthanides and actinides is outside the table
All of these
At the time of Mendeleev ____ elements were known
56
63
80
118
Liquid among the following is
Br
Mg
K
I
Down the group atomic size
increases
decreases
constant
None of these
Most abundant inert gas on earth
C
Kr
Ar
U
Most poisonous element is
Carbon
Francium
Radium
Plutonium
Highest melting point among non metal is
Al
Fe
C
K
The minimum amount of energy required to remove the electron from the ground state of an atom is called as
Electronegativity
Electron affinity
Ionization potential
None of these
Electronegativity across the period
increases
decreases
constant
None of these
