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Free download in PDF Periodic Table Multiple Choice Questions & Answers for competitive exams. These short objective type questions with answers are very important for competitive exams like IIT, JEE, NEET, AIIMS, JIPMER etc.
(1)
In fluorine, incoming electrons are repel by the
[A]
Thick cloud
[B]
Outer most shell
[C]
Nucleus
[D]
Atomic radii
(2)
Fluorine has electron affinity less than that of
[A]
sodium
[B]
potassium
[C]
chlorine
[D]
oxygen
(3)
Modern periodic law had been given by—
[A]
Mendeleev
[B]
Lavoisier
[C]
Moseley
[D]
Lother-Mayer
(4)
In periodic table elements with similar valence shell configuration are placed in
[A]
Different groups
[B]
Same group
[C]
Can be placed any where
[D]
None of above
(5)
Groups contain alkaline earth metals are
[A]
IA
[B]
IIIA
[C]
IIA
[D]
IVA
(6)
The element with atomic weight 14 is
[A]
Oxygen
[B]
Boron
[C]
Nitrogen
[D]
Carbon
(7)
Ability of atom to attract electrons towards itself is called
[A]
Electron affinity
[B]
Electronegativity
[C]
Ionization energy
[D]
Shielding effect
Answer: Electronegativity
(8)
Physical properties depends on the
[A]
size of atom
[B]
size of proton
[C]
size of neutron
[D]
no. of electrons
(9)
The horizontal lines in the modern periodic table are called—
[A]
Metal
[B]
Group
[C]
Period
[D]
None of the above
(10)
All the elements in a group in the periodic table have the same—
[A]
Same number of valence electrons
[B]
Atomic number
[C]
Atomic weight
[D]
None of the above
Answer: Same number of valence electrons
(11)
In year 2016 , in which month new elements were found in the periodic table?
[A]
February
[B]
January
[C]
March
[D]
April
(12)
When an electron is added in valence shell then
[A]
Energy is absorbed
[B]
Energy is released
[C]
Energy remains same
[D]
Force of attraction increases
Answer: Energy is released
(13)
The law that "the physical and chemical properties of elements are periodic functions of their atomic weights" was given by
[A]
Lothar Meyer
[B]
Moseley
[C]
Bohr
[D]
Mendeleev
(14)
As we go from left to right across period, electron affinity
[A]
Increases
[B]
Decreases
[C]
Remains same
[D]
None of above
(15)
Decrease in force of attraction between valence electrons and nucleus by inner electrons is called
[A]
screening effect
[B]
shielding effect
[C]
photoelectric effect
[D]
dopler effect
(16)
Elements that lie in same column have
[A]
similar properties
[B]
different properties
[C]
same physical properties
[D]
different chemical properties
Answer: similar properties
(17)
Value of ionization energy
[A]
Decreases down the group
[B]
Increases down the group
[C]
Remains same down the group
[D]
None of above
Answer: Decreases down the group
(18)
The Law of Octaves was given by
[A]
Mendeleev
[B]
John Newlands
[C]
Dobereiner
[D]
Bohr
(19)
The law that "the properties of elements are periodic functions of their atomic numbers" was given by
[A]
Moseley
[B]
Linus Pauling
[C]
Heisenberg
[D]
Mendeleev
(20)
Elements are arranged in order of
[A]
Decreasing atomic number
[B]
Decreasing atomic mass
[C]
Increasing atomic number
[D]
Increasing atomic mass
Answer: Increasing atomic number
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