MCQ Questions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties with Answers

Classification of Elements and Periodicity in Properties Class 11 Chemistry MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties with Answers Pdf free download. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We have Provided Classification of Elements and Periodicity in Properties Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well.

Class 11 Chemistry Chapter 3 Quiz

Class 11 Chemistry Chapter 3 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Classification of Elements and Periodicity in Properties Class 11 Chemistry MCQ online test

Q1.	The group number, number of valence electrons, and valency of an element with the atomic number 15, respectively, are:
	A.16, 5 and 2
	B.15, 5 and 3
	C.16, 6 and 3
	D.15, 6 and 2

Ans: 15, 5 and 3

Q2.	The d-block elements consists mostly of
	A.Monovalent metals
	B.All non-metals
	C.Elements which generally form stoichiometric metal oxide
	D.Many metals with catalytic properties

Ans: Many metals with catalytic properties

Q3.	Which of the following has the highest boiling point?
	A.Ne
	B.Xe
	C.Ar
	D.Kr.

Ans: Xe

Q4.	The chemistry of lithium is very similar to that of magnesium even though they are placed in different groups. Its reason is:
	A.Both are found together in nature
	B.Both have nearly the same size
	C.Both have similar electronic configuration
	D.The ratio of their charge and size (i.e. charge density) is nearly the same

Ans: The ratio of their charge and size (i.e. charge density) is nearly the same

Q5.	Which one of the following groupings represents a collection of isoelectronic species? (At. nos: Cs-55, Br-35)
	A.Na⁺, Ca²⁺, Mg²⁺
	B.N^3-, F^–, Na⁺
	C.Be, Al³⁺, Cl^–
	D.Ca²⁺, Cs⁺, Br

Ans: N^3-, F^–, Na⁺

Q6.	Which of the following has the maximum number of unpaired electrons?
	A.Mg²⁺
	B.Ti³⁺
	C.V³⁺
	D.Fe²⁺

Ans: Fe²⁺

Q7.	In the periodic table, the element with atomic number 16 will be placed in the group
	A.Third
	B.Fourth
	C.Fifth
	D.Sixth

Ans: Sixth

Q8.	Representative elements are those which belong to
	A.p and d – Block
	B.s and d – Block
	C.s and p – Block
	D.s and f – Block

Ans: s and p – Block

Q9.	Which pair of elements belongs to same group?
	A.Elements with atomic no. 17 and 38
	B.Elements with atomic no. 20 and 40
	C.Elements with atomic no. 17 and 53
	D.Elements with atomic no. 11 and 33

Ans: Elements with atomic no. 17 and 53

Q10.	The most electronegative element of the periodic table is
	A.Iodine
	B.Sulphur
	C.Oxygen
	D.Fluorine.

Ans: Fluorine.

Q11.	In the third period of the Periodic Table the element having smallest size is
	A.Na
	B.Ar
	C.Cl
	D.Si

Ans: Ar

Q12.	The element with highest second ionization energy is
	A.Cl
	B.S
	C.Na
	D.Mg

Ans: Na

Q13.	Which of the following properties generally decreases along a period?
	A.Ionization Energy
	B.Metallic Character
	C.Electron Affinity
	D.Valency.

Ans: Metallic Character

Q14.	Increasing order of electronegativity is
	A.Bi < P < S < Cl
	B.P < Bi < S < Cl
	C.S < Bi < P < Cl
	D.Cl < S < Bi < P

Ans: Bi < P < S < Cl

Q15.	Which of the following oxides is amphoteric in character?
	A.SnO₂
	B.CO₂
	C.SiO₂
	D.CaO

Ans: SnO₂

Q16.	Which of the following statement is correct with respect to the property of elements with an increase in atomic number in the carbon family (group 14)
	A.Atomic size decrease
	B.Ionization energy increase
	C.Metallic character decrease
	D.Stability of +2 oxidation state increase

Ans: Stability of +2 oxidation state increase

Q17.	The elements which occupy the peaks of ionisation energy curve, are
	A.Na, K, Rb, Cs
	B.Na, Mg, Cl, I
	C.Cl, Br, I, F
	D.He, Ne, Ar, Kr

Ans: He, Ne, Ar, Kr

Q18.	According to the periodic law of elements, the variation in properties of elements is related to their
	A.nuclear neutron – proton number ratios
	B.atomic masses
	C.nuclear masses
	D.atomic numbers

Ans: atomic numbers

Q19.	The group number, number of valence electrons, and valency of an element with the atomic number 15, respectively, are:
	A.16, 5 and 2
	B.15, 5 and 3
	C.16, 6 and 3
	D.15, 6 and 2

Ans: 15, 5 and 3

Q20.	A sudden large jump between the values of second and third ionisation energies of an element would be associated with the electronic configuration
	A.1s², 2s²p⁶, 3s¹
	B.1s², 2s²p⁶, 3s²p¹
	C.1s², 2s2p⁶, 3s²
	D.1s², 2s²p⁶, 3s²p²