💬 Discord
Login

Classification of Elements and Periodicity Practice Questions

Class 11 · Chemistry · 1856 free MCQs with instant results and detailed explanations.

1856
Total
594
Easy
913
Medium
349
Hard

Start Practicing Classification of Elements and Periodicity

Take a timed quiz or customize your practice session

Quick Quiz (10 Qs) → Mock Test (25 Qs) ⚙ Customize

Topics in Classification of Elements and Periodicity

Modern Periodic Law 745
Periodic Trends 639
Electron Configurations 472

Sample Questions from Classification of Elements and Periodicity

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Q1
Easy
Which of the following elements is classified as a noble gas?
A. Neon
B. Nitrogen
C. Oxygen
D. Chlorine
Show Answer & Explanation
Correct Answer: A
Neon is a noble gas, characterized by its lack of reactivity due to a full valence shell.
Q2
Easy
What is the expected trend in atomic size as you move down a group in the periodic table?
A. Increases
B. Decreases
C. Remains constant
D. Varies unpredictably
Show Answer & Explanation
Correct Answer: A
Atomic size increases down a group due to the addition of electron shells.
Q3
Easy
Which element is a metalloid?
A. Gallium
B. Silicon
C. Bromine
D. Calcium
Show Answer & Explanation
Correct Answer: B
Silicon is classified as a metalloid, exhibiting properties of both metals and non-metals.
Q4
Medium
Which of the following is NOT a characteristic of the modern periodic table?
A. Elements are arranged by increasing atomic number
B. Elements with similar properties are in the same group
C. It is based on atomic weight
D. Periods represent principal energy levels
Show Answer & Explanation
Correct Answer: C
The modern periodic table is based on atomic number, not atomic weight.
Q5
Medium
Which of the following groups contains elements that are all metals?
A. Group 1
B. Group 17
C. Group 18
D. Group 14
Show Answer & Explanation
Correct Answer: A
Group 1 contains alkali metals which are all metals.
Q6
Medium
The trend in electronegativity in the periodic table shows that it generally:
A. Increases down a group
B. Decreases across a period from left to right
C. Increases across a period from left to right
D. Remains constant across a period
Show Answer & Explanation
Correct Answer: C
Electronegativity increases across a period from left to right due to increased nuclear charge.
Q7
Medium
In the context of the periodic table, which of the following statements is true about nonmetals?
A. They are all gases
B. They tend to lose electrons easily
C. They have high ionization energies
D. They are good conductors of electricity
Show Answer & Explanation
Correct Answer: C
Nonmetals generally have high ionization energies, making them less likely to lose electrons.
Q8
Hard
Which of the following elements has the highest electronegativity according to the modern periodic table?
A. Fluorine
B. Oxygen
C. Chlorine
D. Nitrogen
Show Answer & Explanation
Correct Answer: A
Fluorine is the most electronegative element in the periodic table, with a value of 4.0 on the Pauling scale.
Q9
Hard
How does the atomic radius change as you move across a period from left to right?
A. Increases
B. Decreases
C. Remains constant
D. Variable
Show Answer & Explanation
Correct Answer: B
The atomic radius decreases across a period due to increasing nuclear charge, pulling the electrons closer to the nucleus.
Q10
Hard
Which of the following groups in the periodic table contains non-metals only?
A. Group 1
B. Group 14
C. Group 17
D. Group 2
Show Answer & Explanation
Correct Answer: C
Group 17, also known as the halogens, consists solely of non-metals.

Showing 10 of 1856 questions. Start a quiz to practice all questions with scoring and timer.

Practice All 1856 Questions →

More Chemistry Chapters

1 Some Basic Concepts of Chemistry
901 Qs →
2 Structure of Atom
1867 Qs →
3 Chemical Bonding and Molecular Structure
2034 Qs →
4 States of Matter
1897 Qs →
5 Thermodynamics
1764 Qs →
6 Equilibrium
1739 Qs →
7 Redox Reactions
1677 Qs →
8 Hydrogen
2028 Qs →

Other Class 11 Subjects

📐 Mathematics → ⚡ Physics → 🧬 Biology →

Classification of Elements and Periodicity — Class 11 Chemistry Practice Questions Online

This page contains 1856 practice MCQs for the chapter Classification of Elements and Periodicity in Class 11 Chemistry. The questions are organized by difficulty — 594 easy, 913 medium, 349 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 3 topics, giving you comprehensive coverage of the entire chapter.