JEE Main Bonding & Periodicity – Topic Test
JEE Main Bonding & Periodicity – Topic Test is an online topic test in the JEE Main pattern, covering Bonding & Periodicity. Attempt it on SeatBeat with a timer like the real exam, then see a detailed solution for every question and your score and weak-topic analysis.
Topics in this test
| Topic | Questions |
|---|---|
| Bonding & Periodicity | 30 |
Difficulty: 15 medium · 15 hard
Bonding & Periodicity MCQ questions with answers
The first 3 of 30 questions. Unlock the series for the rest, each with a solution.
Q1. Which one of the following statements about resonating (canonical) structures is correct?
अनुनादी (विहित) संरचनाओं के बारे में निम्नलिखित में से कौन-सा कथन सही है?
- A. A greater number of canonical forms makes the molecule less stable / विहित रूपों की अधिक संख्या अणु को कम स्थायी बनाती है
- B. They differ only in the distribution of electrons, while the positions of the nuclei remain the same / ये केवल इलेक्ट्रॉनों के वितरण में भिन्न होती हैं, जबकि नाभिकों की स्थितियाँ समान रहती हैं
- C. Each canonical structure has a separate real existence / प्रत्येक विहित संरचना का पृथक वास्तविक अस्तित्व होता है
- D. The molecule physically oscillates between the individual structures / अणु भौतिक रूप से अलग-अलग संरचनाओं के बीच दोलन करता है
Solution
Canonical structures differ only in the distribution of electrons; the positions of the nuclei stay fixed. The molecule does not oscillate between them and no single structure has real, independent existence.
विहित संरचनाएँ केवल इलेक्ट्रॉनों के वितरण में भिन्न होती हैं; नाभिकों की स्थितियाँ स्थिर रहती हैं। अणु इनके बीच दोलन नहीं करता और किसी एकल संरचना का वास्तविक, स्वतंत्र अस्तित्व नहीं होता।
Q2. Arrange the following group-16 hydrides in the correct order of increasing boiling point: H2O, H2S, H2Se, H2Te.
निम्नलिखित वर्ग-16 हाइड्राइडों को क्वथनांक के बढ़ते हुए सही क्रम में व्यवस्थित कीजिए: H2O, H2S, H2Se, H2Te।
- A. H2S < H2Se < H2O < H2Te
- B. H2Te < H2Se < H2S < H2O
- C. H2S < H2Se < H2Te < H2O
- D. H2O < H2S < H2Se < H2Te
Solution
Boiling point rises with molecular size from H2S to H2Te, but H2O is anomalously high due to strong intermolecular hydrogen bonding, giving H2S < H2Se < H2Te < H2O.
क्वथनांक H2S से H2Te तक आण्विक आकार बढ़ने के साथ बढ़ता है, परंतु H2O प्रबल अंतरआण्विक हाइड्रोजन बंधन के कारण असामान्य रूप से उच्च है, जिससे H2S < H2Se < H2Te < H2O प्राप्त होता है।
Q3. While arranging elements in order of increasing atomic mass, Mendeleev deliberately reversed the sequence of one pair of elements so that elements with similar properties remained in the same group. That pair is:
तत्वों को बढ़ते परमाणु द्रव्यमान के क्रम में व्यवस्थित करते समय मेंडेलीव ने जान-बूझकर तत्वों के एक युग्म का क्रम उलट दिया, ताकि समान गुणों वाले तत्व एक ही वर्ग में बने रहें। वह युग्म है:
- A. Sodium and magnesium / सोडियम और मैग्नीशियम
- B. Nitrogen and oxygen / नाइट्रोजन और ऑक्सीजन
- C. Tellurium and iodine / टेल्यूरियम और आयोडीन
- D. Aluminium and silicon / ऐलुमिनियम और सिलिकन
Solution
Tellurium (atomic mass 127.6) was placed before iodine (126.9), reversing the atomic mass order, so that iodine fell in the same group as the chemically similar halogens fluorine, chlorine and bromine. The other pairs occur in their normal order of increasing atomic mass.
टेल्यूरियम (परमाणु द्रव्यमान 127.6) को आयोडीन (126.9) से पहले रखा गया, जिससे परमाणु द्रव्यमान का क्रम उलट गया, ताकि आयोडीन रासायनिक रूप से समान हैलोजनों — फ्लुओरीन, क्लोरीन और ब्रोमीन — के वर्ग में आ जाए। शेष युग्म बढ़ते परमाणु द्रव्यमान के अपने सामान्य क्रम में ही हैं।
Frequently asked questions
How many questions are in the JEE Main Bonding & Periodicity – Topic Test?
30 questions for 30 marks, to be answered in 30 minutes.
Is there negative marking in the JEE Main Bonding & Periodicity – Topic Test?
Yes — 0.25 marks are deducted for each wrong answer, as in the real exam pattern.
Which topics does the JEE Main Bonding & Periodicity – Topic Test cover?
Bonding & Periodicity (30 questions).
Is the JEE Main Bonding & Periodicity – Topic Test free?
It is part of the JEE Main 2027 Mock Test Series (104 tests, ₹299). You can first try Basic Concepts & Atomic Structure – Topic Test for free.
More tests in the JEE Main 2027 Mock Test Series
- Basic Concepts & Atomic Structure – Topic TestFree
- Inorganic — p/d/f Block & Coordination – Topic Test
- Organic — Biomolecules & Practical – Topic Test
- Organic — Functional Groups – Topic Test
- Organic — Fundamentals & Hydrocarbons – Topic Test
- Physical Chemistry — Electrochemistry & Kinetics – Topic Test
- Physical Chemistry — Energetics & Equilibrium – Topic Test
- Algebra — Combinatorics & Series – Topic Test
- Algebra — Numbers & Matrices – Topic Test
- Coordinate Geometry – Topic Test
- Differential Calculus – Topic Test
- Integral Calculus & Differential Equations – Topic Test
- Probability & Statistics – Topic Test
- Sets, Relations, Functions & Trigonometry – Topic Test
- Vectors & 3D Geometry – Topic Test
- Electrostatics and Current Electricity – Topic Test
- Magnetism, EMI and EM Waves – Topic Test
- Mechanics – Topic Test
- Modern Physics – Topic Test
- Optics – Topic Test
- Oscillations and Waves – Topic Test
- Properties of Matter & Heat – Topic Test
- Units, Measurement & Experimental Skills – Topic Test
- Basic Concepts & Atomic Structure: Atomic Structure – Chapter Test
- Basic Concepts & Atomic Structure: Some Basic Concepts in Chemistry – Chapter Test
- Bonding & Periodicity: Chemical Bonding and Molecular Structure – Chapter Test
- Bonding & Periodicity: Classification of Elements and Periodicity in Properties – Chapter Test
- Inorganic — p/d/f Block & Coordination: Coordination Compounds – Chapter Test
- Inorganic — p/d/f Block & Coordination: d- and f-Block Elements – Chapter Test
- Inorganic — p/d/f Block & Coordination: p-Block Elements – Chapter Test
See the full JEE Main 2027 Mock Test Series → · JEE Main: pattern, notification & syllabus →