Relevant Titles:
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CBSE Class 11 Chemistry: Oxides and Halides MCQs (p-Block Elements)
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Chapter 11 p-Block Elements MCQs – Group 13 & 14 (Oxides & Halides)
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Online Practice Test: Oxides and Halides of p-Block Elements – Class 11 Chemistry
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Class 11 Chemistry Quiz – Oxides and Halides (NCERT-Based Questions)
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Free MCQ Test on p-Block Oxides and Halides – CBSE Class 11 Chemistry
Introduction
Prepare for your CBSE Class 11 Chemistry exams with this exclusive online MCQ practice test on Oxides and Halides of p-Block Elements (Group 13 & 14). This topic, part of Inorganic Chemistry (Chapter 11), explores the structure, bonding, and chemical behavior of oxides and halides formed by elements like Boron, Aluminium, Carbon, Silicon, and Lead.
These carefully crafted MCQs follow the NCERT Class 11 Chemistry syllabus, making them ideal for quick concept revision and exam readiness. The quiz focuses on important trends such as acidic, basic, and amphoteric nature of oxides, and the covalent or ionic character of halides. Students will also understand why compounds like B₂O₃, SiO₂, Al₂O₃, and AlCl₃ behave differently based on periodic properties and oxidation states.
This 30-question timed test helps students assess their conceptual clarity, speed, and accuracy through automatic scoring and per-question feedback. Practice now to strengthen your understanding of p-Block element compounds, crucial for both CBSE board exams and NEET/JEE chemistry preparation.
Sample MCQs (With Answers and Explanations):
Q1. Which oxide among the following is amphoteric?
A) B₂O₃ B) Al₂O₃ C) SiO₂ D) CO₂
✅ Answer: B) Al₂O₃
💡 Explanation: Aluminium oxide reacts with both acids and bases to form salts, showing amphoteric behavior typical of metalloid oxides.
Q2. Which halide of boron acts as a strong Lewis acid?
A) BF₃ B) BCl₃ C) BBr₃ D) All of these
✅ Answer: D) All of these
💡 Explanation: All boron trihalides are electron-deficient and accept electron pairs from donors, making them strong Lewis acids.
Q3. Which oxide forms boric acid on reaction with water?
A) CO₂ B) B₂O₃ C) SiO₂ D) PbO
✅ Answer: B) B₂O₃
💡 Explanation: Boron trioxide reacts with water to form boric acid (H₃BO₃), an important weak acid in inorganic chemistry.
Q4. Which halide hydrolyzes to give silicic acid?
A) SiCl₄ B) CCl₄ C) AlCl₃ D) PbCl₂
✅ Answer: A) SiCl₄
💡 Explanation: Silicon tetrachloride reacts vigorously with water to form silicic acid and HCl gas.
Q5. Which oxide shows the strongest acidic character?
A) CO₂ B) SiO₂ C) SnO₂ D) PbO₂
✅ Answer: A) CO₂
💡 Explanation: Carbon dioxide reacts with water to form carbonic acid, representing the highest acidic behavior among Group 14 oxides.