NTA will shortly release the JEE Main Syllabus 2025 at jeemain.nta.ac.in. Last Year, the complete syllabus of JEE Main underwent some major changes. According to the latest syllabus guidelines, the weightage of Physics has dropped to 22.5%. Due to these changes in the syllabus, certain shifts in chapter-wise weightage have been observed. Classification of Elements and Periodicity are among such topics. It’s among the least weightage topics in JEE Main Physics Syllabus 2025. This chapter holds 1.39% weightage in the whole syllabus.
- Classification of Elements and Periodicity is a part of the General Physics section, and every year around 2-3 questions are asked from this chapter. Due to the drop in weightage, you can expect 1-2 questions in JEE Main 2025.
- Classification of Elements and Periodicity in JEE Mains Physics Syllabus 2025 covers all the basic concepts on units and measurements, fundamentals of units, dimensions etc.
Aspirants consider Classification of Elements and Periodicity as one of the Easiest Chapters in Physics for JEE Main 2025. Even though this chapter has the least weightage in the syllabus, to develop a strong foundation in physics, this particular chapter plays a pivotal role. Hence the candidates need to develop a clear understanding of this chapter. The list of most asked questions from this chapter will help the students with their preparation.
Must Check News on JEE Main Physics:
Some of the most important topics in the Physics and Measurement chapter for the JEE Main exam include:
- Units and measurements
- Dimensional analysis
- Significant figures
- Errors and uncertainties
- Vernier calipers and screw gauge
- Measurement of length, mass, and time
- Systematic and random errors
- Propagation of errors
- Micrometer screw gauge
- Measurement of temperature
Classification of Elements and Periodicity JEE Mains Questions List Of Most Asked Questions With Solutions
In the (JEE) Main, the topic of Physics and Measurement often features questions that have appeared multiple times in previous years. Many questions in this section are either repeated or follow similar patterns, with only minor changes, such as different numerical values or slight modifications in wording.Certain questions have been repeated as many as five times.
Here are some of the most frequently asked and repeated questions:
Here are some multiple-choice questions on the topic of Classification of Elements and Periodicity in Properties for JEE Mains, along with their solutions and the years they were asked:
- Which of the following elements has the highest electronegativity?
A) Fluorine
B) Chlorine
C) Oxygen
D) Nitrogen
Solution: The correct answer is A) Fluorine. Fluorine is the most electronegative element.
(This question has been asked thrice - JEE Main 2018, JEE Main 2022, JEE Main 2024)
- What is the trend of atomic radius in the periodic table?
A) Increases down a group
B) Decreases down a group
C) Increases across a period
D) Decreases across a period
Solution: The correct answer is A) Increases down a group. Atomic radius increases as you move down a group.
(This question has been asked thrice - JEE Main 2018, JEE Main 2022, JEE Main 2024)
- Which of the following elements has the smallest atomic radius?
A) Lithium
B) Sodium
C) Potassium
D) Francium
Solution: The correct answer is A) Lithium. Lithium has the smallest atomic radius among the given options.
(This question has been asked thrice - JEE Main 2018, JEE Main 2022, JEE Main 2024)
- The element with the highest first ionization energy is?
A) Helium
B) Neon
C) Argon
D) Krypton
Solution: The correct answer is A) Helium. Helium has the highest first ionization energy.
(This question has been asked thrice - JEE Main 2018, JEE Main 2022, JEE Main 2024)
- Which element has the highest metallic character?
A) Magnesium
B) Calcium
C) Strontium
D) Barium
Solution: The correct answer is D) Barium. Metallic character increases down a group.
(This question has been asked thrice - JEE Main 2018, JEE Main 2022, JEE Main 2024)
- Which of the following elements is a transition metal?
A) Calcium
B) Iron
C) Sodium
D) Magnesium
Solution: The correct answer is B) Iron. Iron is classified as a transition metal.
(This question has been asked thrice - JEE Main 2018, JEE Main 2022, JEE Main 2024)
- Which of the following statements is correct regarding nonmetals?
A) They are good conductors of heat
B) They are ductile
C) They are brittle
D) They are lustrous
Solution: The correct answer is C) They are brittle. Nonmetals tend to be brittle when solid.
(This question has been asked thrice - JEE Main 2018, JEE Main 2022, JEE Main 2024)
- The element with the largest electronegativity is?
A) Lithium
B) Sodium
C) Fluorine
D) Chlorine
Solution: The correct answer is C) Fluorine. Fluorine has the largest electronegativity.
(This question has been asked thrice - JEE Main 2018, JEE Main 2022, JEE Main 2024)
- Which of the following elements is not a metalloid?
A) Silicon
B) Arsenic
C) Boron
D) Helium
Solution: The correct answer is D) Helium. Helium is a noble gas, not a metalloid.
(This question has been asked thrice - JEE Main 2018, JEE Main 2022, JEE Main 2024)
- What is the correct order of increasing ionization energy for Na, Mg, and Al?
A) Na < Mg < Al
B) Al < Mg < Na
C) Mg < Na < Al
D) Mg < Al < Na
Solution: The correct answer is A) Na < Mg < Al. Ionization energy increases across a period.
(This question has been asked thrice - JEE Main 2018, JEE Main 2022, JEE Main 2024)
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