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Periodic Table mcq Class 10 with Answers for Students
According to Mendeleev’s forecast, what was the predicted atomic Mass of eka-aluminium?
a) 44
b) 100
c) 72
d) 68
Option d – 68
In Newlands’ Octaves, the properties of lithium were observed to be similar to which element?
a) Magnesium
b) Aluminium
c) Beryllium
d) Sodium
Option d – Sodium
Alkaline Earth Metals like radium, barium, and strontium belong to which group of the Periodic Table?
a) Group 3A
b) Group 5A
c) Group 1A
d) Group 2A
Option d – Group 2A
The element with atomic number 59 is placed in which block of the Periodic Table?
a) s-block
b) f-block
c) d-block
d) p-block
Option b – f-block
How does atomic radius change across a period in the Periodic Table?
a) It decreases
b) It behaves irregularly
c) It remains constant
d) It increases
Option a – It decreases
According to Newlands’ Law of Octaves, which element has properties similar to nitrogen (N)?
a) Sulphur
b) Aluminium
c) Boron
d) Phosphorus
Option d – Phosphorus
The elements in Group 17 of the Periodic Table are referred to as:
a) Transition Metals
b) Noble gases
c) Alkali Metals
d) Halogens
Option d – Halogens
Which element is chemically inert and found in Group 18?
a) Oxygen
b) Chlorine
c) Fluorine
d) Helium
Option d – Helium
What is the atomic number of uranium (U)?
a) 94
b) 92
c) 90
d) 104
Option b – 92
Which element has the highest electronegativity in the Periodic Table?
a) Fluorine
b) Carbon
c) Hydrogen
d) Oxygen
Option a – Fluorine
In Moseley’s experiment, a straight line is obtained when v is plotted against atomic number (Z). What does v represent?
a) Frequency of X-rays emitted
b) Frequency of α-rays emitted
c) Frequency of γ-rays emitted
d) Frequency of β-rays emitted
Option a – Frequency of X-rays emitted
How many electrons are present in the outermost shell of a halogen?
a) One
b) Seven
c) Two
d) Five
Option b – Seven
According to Mendeleev, which element’s properties were closely similar to eka-aluminium?
a) Titanium
b) Scandium
c) Gallium
d) Germanium
Option c – Gallium
Which synthetic element was temporarily named seaborgium to honour Glenn T. Seaborg?
a) Element 103
b) Element 97
c) Element 90
d) Element 106
Option d – Element 106
Technetium, the first artificially produced element used in medical imaging, belongs to which group?
a) Group 7
b) Group 12
c) Group 14
d) Group 19
Option a – Group 7
If calcium has a valency of 2 and oxygen has a valency of 2-, what is the simplest chemical formula of calcium oxide?
a) Ca₂O₂
b) CaO
c) CaO₂
d) Ca₂O
Option b – CaO
Silver is located in which group of the Periodic Table?
a) Group 11
b) Group 7
c) Group 15
d) Group 3
Option a – Group 11
Which property of an element is inversely related to its ionisation energy?
a) Atomic radius
b) Electronegativity
c) Atomic Mass
d) Electron affinity
Option a – Atomic radius
Which statement is correct regarding electron affinity and electronegativity?
a) Fluorine has the highest electron affinity and the highest electronegativity
b) Fluorine has the highest electron affinity, while bromine has the highest electronegativity
c) Chlorine has the highest electron affinity, while fluorine has the highest electronegativity
d) Fluorine has the highest electron affinity, while chlorine has the highest electronegativity
Option c – Chlorine has the highest electron affinity, while fluorine has the highest electronegativity
How many elements occur naturally?
a) 114
b) 94
c) 86
d) 82
Option b – 94
Arrange Li, Na, Be, and O in the correct order of atomic radius:
a) Na > Li > Be > O
b) Na > Be > Li > O
c) Be > Li > Na > O
d) O > Be > Li > Na
Option a – Na > Li > Be > O
What is the oxidation number of vanadium in V₂O₅?
a) +2
b) +4
c) +3
d) +5
Option d – +5
Which ion is not isoelectronic with the others?
a) O²⁻
b) Na⁺
c) Ne
d) N⁻
Option d – N⁻
Identify the SET of elements that share the same valency:
a) Na, Mg, Ca
b) Na, Mg, Al
c) Mg, Ca, K
d) Mg, Ca, Ba
Option d – Mg, Ca, Ba
Which element exhibits only one valency?
a) Sulphur
b) Phosphorus
c) Sodium
d) Copper
Option c – Sodium
What is the correct order of atomic radius in ascending order?
a) C < B < Si < Al
b) C < B < Al < Si
c) C < Si < B < Al
d) Si < Al < C < B
Option b – C < B < Al < Si
What is the proper electronic configuration of copper?
a) 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s¹
b) 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s²
c) 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁹ 4s²
d) 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s²
Option a – 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s¹
Arrange O²⁻, F⁻, Na⁺, and Mg²⁺ in order of increasing ionic radius:
a) O²⁻ < F⁻ < Na⁺ < Mg²⁺
b) Mg²⁺ < Na⁺ < F⁻ < O²⁻
c) Mg²⁺ < Na⁺ < O²⁻ < F⁻
d) O²⁻ < F⁻ < Mg²⁺ < Na⁺
Option b – Mg²⁺ < Na⁺ < F⁻ < O²⁻
Which element has the highest tendency to gain an electron?
a) F
b) Cl
c) P
d) S
Option b – Cl
Which group of elements is called the “Representative Elements”?
a) Only s-block elements
b) Only f-block elements
c) Only d-block elements
d) Both s- and p-block elements
Option d – Both s- and p-block elements
Who is credited with creating the Modern Periodic Table?
a) Dmitri Ivanovich Mendeleev
b) Henry Moseley
c) Johann Dobereiner
d) John Alexander Newlands
Option b – Henry Moseley
Which statement about gases is incorrect?
a) Hydrogen has three isotopes
b) Helium is commonly used in electric bulbs
c) Oxygen burns fuel in rocket engines
d) Nitrogen cannot replace air in Food packaging
Option b – Helium is commonly used in electric bulbs
Among Phosphorus, Bromine, Radon, and Mercury, how many are liquids at 25°C and 1 atm?
a) 1
b) 2
c) 3
d) 4
Option b – 2
Why must uranium isotopes be separated using a physical method instead of a chemical one?
a) It is unsafe to mix uranium with chemicals
b) The isotopes are chemically identical
c) The isotopes differ in neutron count
d) Natural uranium contains only 0.7% U-235
Option b – The isotopes are chemically identical
What is the radius of the first stationary orbit in a hydrogen Atom?
a) 5.0 Å
b) 0.529 Å
c) 5.29 pm
d) 52.9 pm
Option c – 5.29 pm
The number of electrons in H⁻, He, H₂, and O²⁻ are:
a) 1, 2, 2, 15
b) 1, 2, 1, 14
c) 2, 2, 2, 16
d) 0, 2, 1, 14
Option a – 1, 2, 2, 15
Which of the following is classified as a metalloid?
a) Silicon
b) Tin
c) Calcium carbonate
d) Sugar solution
Option a – Silicon
An element has atomic number 11. Its name, symbol, and valency are:
a) Lithium, Li, 1
b) Magnesium, Mg, 2
c) Sodium, Na, 1
d) Boron, B, 3
Option c – Sodium, Na, 1
Which of the following contains only Lewis Acids?
a) AlCl₃, Co3+, BF₃
b) BCl₃, NH₃, OH⁻
c) Mg²⁺, H₂O, F⁻
d) BF₃, NH₃, H₂O
Option a – AlCl₃, Co3+, BF₃
Element X forms a chloride, XClₙ, which is a Solid with a high melting point. X is most likely in the same group as:
a) Na
b) Al
c) Mg
d) K
Option c – Mg
Boron is the sole metalloid in which group of the periodic table?
a) Group 16
b) Group 10
c) Group 13
d) Group 5
Option c – Group 13
Which element from Group 9 is classified as a transition metal?
a) Copper (Cu)
b) Cobalt (Co)
c) Nickel (Ni)
d) Iron (Fe)
Option b – Cobalt (Co)
Which s-block metal has a silvery-white appearance and is used in alloys for gyroscopes, springs, electrical contacts, and non-sparking tools?
a) Caesium
b) Rubidium
c) Beryllium
d) Francium
Option c – Beryllium
Which d-block element is symbolized by ‘alpha’ and emits metallic rays?
a) Tungsten
b) Actinium
c) Rhenium
d) Lanthanum
Option b – Actinium
During Mendeleev’s era, how many elements were known?
a) 57
b) 53
c) 63
d) 67
Option c – 63
Which soft, silvery-yellow lanthanide metal has atomic number 59?
a) Neodymium
b) Praseodymium
c) Gadolinium
d) Promethium
Option b – Praseodymium
Elements with the electron configuration [He] 2s² 2p⁴ belong to which group?
a) 8
b) 6
c) 10
d) 18
Option d – 18
Which statement correctly describes trends in atomic radius?
a) Atomic radius increases across a period and decreases down a group
b) Atomic radius decreases across a period and increases down a group
c) Atomic radius decreases across a period and down a group
d) Atomic radius increases across a period and down a group
Option b – Atomic radius decreases across a period and increases down a group
Which element has atomic number 87 and a half-life of only 22 minutes, having no known biological function?
a) Meitnerium
b) Dubnium
c) Seaborgium
d) Francium
Option d – Francium
What is the valency of silver (Ag)?
a) +3
b) +1
c) -2
d) +2
Option d – +2
Which of the following element-valency pairs is accurate? I. Boron -2, II. Fluorine -3
a) Neither I nor II
b) Both I and II
c) Only II
d) Only I
Option a – Neither I nor II
Which element demonstrates variable valency?
a) Iron
b) Sodium
c) Sulphur
d) Magnesium
Option a – Iron
Bohrium, named after Niels Bohr, has which atomic number?
a) 117
b) 107
c) 113
d) 101
Option b – 107
The Law of Octaves, which states that every eighth element shows similar properties, is also referred to as:
a) Gravity relation
b) Doppler relation
c) Coulomb’s relation
d) Newland’s relation
Option d – Newland’s relation
An element in period 2 and group 17 has which atomic number?
a) 8
b) 9
c) 10
d) 7
Option b – 9
Which statement about Newlands’ Law of Octaves is correct?
a) He began with the element of highest atomic Mass (hydrogen) and ended with thorium, the 56th element
b) He began with the element of lowest atomic Mass (hydrogen) and ended with sodium
c) He began with the element of lowest atomic Mass (hydrogen) and ended with aluminium
d) He began with the element of lowest atomic Mass (hydrogen) and ended with thorium, the 56th element
Option d – He began with the element of lowest atomic Mass (hydrogen) and ended with thorium, the 56th element
Which radioactive metallic transuranic element with atomic number 101 was discovered in 1955?
a) Seaborgium
b) Nobelium
c) Mendelevium
d) Rutherfordium
Option c – Mendelevium
Lanthanides are commonly known as:
a) Alkali Metals
b) Rare Earth elements
c) Inert gases
d) D-block elements
Option b – Rare Earth elements
Why are the outermost electrons more easily lost as we move down a group?
a) The elements are chemically inert
b) The inner electrons are farther from the nucleus
c) The outermost electrons are closest to the nucleus
d) The outermost electrons are farther from the nucleus
Option d – The outermost electrons are farther from the nucleus
Which of the following ions is not isoelectronic with the others?
a) K⁺
b) S²⁻
c) Mg²⁺
d) P³⁻
Option c – Mg²⁺
What are the correct symbols for gold, tin, and lead?
a) Au, Sb, Pb
b) At, Sn, Le
c) Ga, Sb, Pb
d) Au, Sn, Pb
Option d – Au, Sn, Pb
Lithium shows chemical properties similar to which element, indicating a certain type of periodic similarity? ( Periodic Table mcq Class 10 with Answers )
a) Inert pair effect
b) Same effective nuclear charge
c) Diagonal relationship
d) Isoelectronic species
Option c – Diagonal relationship
What is the common name for the elements in Group 18 of the periodic table? ( Periodic Table mcq Class 10 with Answers )
a) Reactive elements
b) Noble (inert) gases
c) Radioactive elements
d) Volatile elements
Option b – Noble (inert) gases
Which symbol did Henry Moseley assign to denote the atomic number of an element? ( Periodic Table mcq Class 10 with Answers )
a) M
b) U
c) A
d) Z
Option d – Z
Arrange the alkaline Earth Metals in order of increasing atomic number. Which sequence is correct? ( Periodic Table mcq Class 10 with Answers )
a) Be < Mg < Ca < Sr < Ba
b) Be < Mg < Sr < Ca < Ba
c) Ba < Mg < Ca < Sr < Be
d) Mg < Be < Ca < Sr < Ba
Option a – Be < Mg < Ca < Sr < Ba
Which element has atomic number 7? ( Periodic Table mcq Class 10 with Answers )
a) Calcium
b) Nitrogen
c) Chlorine
d) Oxygen
Option b – Nitrogen
From the following Metals, which one does not belong to the same group as the others? ( Periodic Table mcq Class 10 with Answers )
a) Lithium
b) Sodium
c) Potassium
d) Magnesium
Option d – Magnesium
Identify the SET that contains only transition Metals. ( Periodic Table mcq Class 10 with Answers )
a) He, Ne, Ar, Au
b) F, Cl, Br, I
c) Cu, Fe, Ni, Ti
d) Na, Mg, Al, Mn
Option c – Cu, Fe, Ni, Ti
Who was the first German chemist to graphically depict atomic volume against atomic weight? ( Periodic Table MCQ Class 10 with Answers )
a) William Ramsay
b) John Newlands
c) Glenn T. Seaborg
d) Lothar Meyer
Option d – Lothar Meyer
Consider the following statements about p-block elements: Statement A: The outermost electron enters the p-orbital. Statement B: Non-Metals and metalloids are only found in the p-block.
a) Both Statements A and B are correct
b) Only Statement A is correct
c) Only Statement B is correct
d) Both Statements A and B are incorrect
Option b – Only Statement A is correct
Which of these elements is part of the actinide series? ( Periodic Table MCQ Class 10 with Answers )
a) Lutetium
b) Thorium
c) Magnesium
d) Lanthanum
Option b – Thorium
Which element of group 13 has a high boiling point and is suitable for use in thermometers? ( Periodic Table MCQ Class 10 with Answers )
a) Indium
b) Thallium
c) Aluminium
d) Gallium
Option d – Gallium
Which noble gas is formed naturally from the radioactive decay of uranium in soils and rocks? ( Periodic Table MCQ Class 10 with Answers )
a) Neon
b) Radon
c) Oganesson
d) Krypton
Option b – Radon
Which radioactive element with atomic number 43 has only short-lived isotopes? ( Periodic Table MCQ Class 10 with Answers )
a) Promethium
b) Nobelium
c) Technetium
d) Neptunium
Option c – Technetium
Which soft alkali metal tarnishes almost immediately when exposed to air? ( Periodic Table MCQ Class 10 with Answers )
a) Sodium
b) Barium
c) Strontium
d) Francium
Option a – Sodium
In which year did John Alexander Newlands introduce the Law of Octaves for chemical elements? ( Periodic Table MCQ Class 10 with Answers )
a) 1860
b) 1865
c) 1873
d) 1870
Option b – 1865
According to Mendeleev’s periodic arrangement, which element’s characteristics closely matched eka-silicon? ( Periodic Table MCQ Class 10 with Answers )
a) Scandium
b) Germanium
c) Gallium
d) Titanium
Option b – Germanium
What is the oxidation state of sulfur (S) in H₂S₂O₈? ( Periodic Table MCQ Class 10 with Answers )
a) 3
b) 6
c) 7
d) 2
Option b – 6
Identify the element that is NOT a halogen. ( Periodic Table MCQ Class 10 with Answers )
a) F
b) He
c) Cl
d) Br
Option b – He
Transition elements are located in which groups of the modern periodic table? ( Periodic Table MCQ Class 10 with Answers )
a) s-block
b) d-block
c) f-block
d) p-block
Option b – d-block
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