Buy Periodic Classification of Elements

Buy Periodic Classification of Elements
Buy Periodic Classification of Elements
1. Periodic classification of elements can
be done on the basis of electronic
configuration and is used to examine the
(a) periodic trends in physical properties
of elements.
(b) periodic trends in chemical
properties of elements.
(c) Both (a) and (b)
(d) None of the above
2. Johann Dobereiner gave the idea of
trends among physical and chemical
properties of several groups of three
elements, the relationship referred to as
(a) law of Triads.
(b) law of Dobereiner.
(c) law of Octaves.
(d) law of Duet.
3. Chemical properties of elements,
according to Lothar Meyer, is the
periodic function of their
(a) valency
(b) atomic number
(c) atomic weight
(d) atomic size
4. Match List I with List II.
List I List II
A. Most reactive alkali metal 1. F
B. Chemically most active
2. Cs
C. Metal with maximum density 3. Hg
D. Transition metals is in liquid
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4. Os
(a) 4 3 2 1 (b) 1 4 3 2
(c) 2 1 4 3 (d) 3 2 1 4
5. In a periodic table, while moving from
left to right in a period, number of
remains same. [SSC 2017]
(a) electrons (b) protons
(c) shells (d) neutrons
6. In Mendeleev’s periodic table, iodine
with lower atomic weight than that of
tellurium was placed alongwith
(a) iron, cobalt and nickel
(b) fluorine, chlorine and bromine
(c) oxygen, sulphur and selenium
(d) carbon, silicon and germanium
7. Consider the following statements,
I. In Mendeleef’s periodic table, position
of the isotopes was not fixed.
II. In the 19th century, Mendeleef
propounded periodic law is based on
atomic mass.
Which of the above statement(s) is/are
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither of them
8. How many elements are there in the
5th Period of Modern Periodic Table?
(a) 2 (b) 8 [CDS 2015]
(c) 18 (d) 36
9. Which group of Periodic Table contains
no metal?
(a) I A (b)III A (c) VII A (d) VII B
10. The elements of group in the Periodic
table [UPPSC 2012]
(a) have similar chemical properties.
(b) have consecutive atomic numbers.
(c) are isobars.
(d) are isotopes.
11. All the elements in a group in the
Periodic Table have the same
(a) atomic weight
(b) number of valence electrons
(c) atomic number
(d) None of the above
12. Which of the following is not a noble
gas? [SSC 2019]
(a) Neon (b) Hydrogen
(c) Helium (d) Argon
13. The horizontal rows and the vertical
columns in the periodic table are
termed as respectively?
(a) Periods, groups
(b) Groups, periods
(c) Series, periods
(d) Family, periods
15. According to IUPAC, total number of
groups and periods in the periodic table
respectively are
(a) 16, 9 (b) 18, 7 (c) 18, 9 (d) 13, 7
16. Match List I with List II
List I List II
A. Modern Periodic Law 1. Groups
B. Father of Periodic
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2. Moseley
C. Vertical lines in
Modern Periodic Table
3. Periods
D. Horizontal lines in
Modern Periodic Table
4. Mendeleef
(a) 3 4 2 1 (b) 4 1 3 2
(c) 2 4 1 3 (d) 2 1 3 4
17. The long form of Periodic Table is
based on
(a) electronegativity
(b) mass of the atom
(c) shape of the atom
(d) atomic number
18. Out of the four blocks in which periodic
table is divided, helium belongs which
(a) s-block (b) p-block
(c) d-block (d) f-block
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