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Class 10 Science
Periodic Classification Of Elements
Quiz 1
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Which one of the following does not increase while moving down the group of the periodic table?
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Atomic radius
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Metallic character
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Valence
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Number of shells in an element.
Explanation
Valence
On moving from left to right in a period in the periodic table, the size of the atom
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increases
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decreases
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does not change appreciably
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first decreases and then increases.
Explanation
decreases
An atom of an element has the electronic configuration 2, 8, To which group does it belong?
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4th group
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6th group
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3rd group
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2nd group
Explanation
2nd group
In modern periodic table, elements are arranged according to their
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atomic weight
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density
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atomic number
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melting point
Explanation
atomic number
In which group are inert elements placed? ‘
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Group 8
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Group 10
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Group 1
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Group 18
Explanation
Group 18
Which of the following sets of atomic number belong to that of alkali metals?
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1, 12, 30, 4, 62
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37, 19, 3, 55
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9, 17, 35, 53
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12, 20, 56, 88
Explanation
37, 19, 3, 55
The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
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Metal
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Metalloid
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Non-metal
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Left-hand side element
Explanation
Metalloid
The amount of energy released when one or more electrons is added to the neutral atom is
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electron affinity
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ionisation energy
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electron negativity
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atomicity
Explanation
electron affinity
Arrange the following elements in the order of their increasing non-metallic character. Li, O, C, Be, F
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F < O < C < Be < Li
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Li < Be < C < O < F
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F < O < C < Be < Li
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F < O < Be < C < Li
Explanation
Li < Be < C < O < F
What type of oxide would E&a-aluminium form?
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EO
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E
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(i) and (ii)
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None of the above
Explanation
E
Which of these belong to the same period?
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A, B
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B, C
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C, A
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A, B & C
Explanation
B, C
Which of the following property will be common in group 1 elements?
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Mass number
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Number of protons in nucleus
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Atomic number
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Number of valence electrons
Explanation
Number of valence electrons
Which one of the following elements exhibit maximum number of valence electrons?
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Na
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Al
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Si
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P
Explanation
P
Which of the following gives the correct increasing order of the atomic radii of O, F and N?
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O, F, N
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N, F, O
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O, N, F
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F, O, N
Explanation
F, O, N
Element ‘A’ has electronic configuration 2, 7; ‘B’ has electronic configuration 2, 8, 5 and ‘C’ has electronic configuration 2, 8, Which two elements will exhibit similar chemical properties?
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A and C
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A and B
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B and C
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None of these
Explanation
A and C
Which of the following elements does not lose an electron easily?
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Na
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F
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Mg
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Al
Explanation
F
Which of the following are the characteristics of isotopes of an element?
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(ii), (iii) and (iv)
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(i), (iii) and (iv)
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(ii) and (iii)
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(ii) and (iv)
Explanation
(ii), (iii) and (iv)
An element-X has mass number 40 and contains 21 neutrons in its atom. To which group of the periodic table does it belong?
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Group 1
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Group 4
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Group 2
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Group 3
Explanation
Group 4
Which of the following properties does not match element of the halogen family?
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They have seven electrons in their valence shell.
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They are highly reactive.
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They are metallic in nature.
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They are diatomic in their molecular form.
Explanation
They are metallic in nature.
Upto which element, the Law of Octaves was found to be applicable.
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Oxygen
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Calcium
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Cobalt
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Potassium
Explanation
Calcium
0 h : 0 m : 1 s
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