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Chemistry - 9 Chapter - 4
Periodicity of Elements and Periodic Table
Test - 4
1.
Define periodicity? ( Click the wrong answer )
a) In element grouping elements with similar properties but different atomic numbers repeated after regular intervals
b) Periodicity means similar things happening after regular intervals.
c) In element grouping elements with different properties but different atomic numbers repeated after regular intervals
2.
Periodicity means?
a) None is correct
b) Some time
c) Some length
d) Something happening after regular intervals
3.
A graph between atomic volume and atomic mass was plotted by _________.
a) Newland
b) Mendeleef
c) Lother meyer
d) Dobereiner
4.
A periodicity was not seen in Lother Meyers graph?
a) False
b) True
5.
Lother Meyer graph included about ___________ elements?
a) 55
b) 50
c) 65
d) 60
6.
Lother Meyer tried to remove defects in _________ table?
a) Cannizzaro's
b) Mendeleef's
c) Dobereiner's
d) Newland's
7.
Lother Meyer was a _______ chemist.
a) German
b) English
c) Italian
d) Indian
8.
Occurring of every eighth element below first element is called______?
a) Physical properteis
b) Atomic number
c) Periodicity
d) Zero group
9.
Periodicity in Lother Meyer graph means similar elements were at the _______?
a) No answer is correct
b) Different locations of the curves
c) Similar locations of curves
10.
Periodicity in Lother Meyers graph was indicated by?
a) Similar elements located at the similar positions of curve and alkali metals were at peak of curves
b) Physical properteis showed dissimilarity
c) Physical properteis showd similarity
d) Alkali metals were at peak of curves
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