The p-Block Elements CBSE Class 12 PYQ Chapter Wise

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Answer first

The p-Block Elements PYQs (previous year questions) for CBSE Class 12: The p-Block Elements (Chemistry) had 13 questions across the 50 official CBSE Class 12 papers we tagged (2016–2026), and appeared in 5 of them. Asked in 5 of 10 years; last in 2020. The concepts asked in the most papers: Group 15-17 Properties, Halogens, Interhalogen and Xenon Compounds.

Year-wise question count

Asked in 5 of 10 years.

Most-asked concepts

Sorted by the number of papers a concept appeared in.

How to practise The p-Block Elements PYQs

1. Start with the concepts at the top of the table. They have come back the most.
2. Solve one year’s The p-Block Elements questions from the official PDF against the clock, then check the answer listed below.
3. Log every miss as a concept gap, a calculation slip or a misread. Each needs a different fix.
4. Once a concept is clean in two papers, move to the next. Then sit a full paper from the year pages.

Questions by year

Each line gives the question number and paper, type, concept, our one-line summary, with a link to the official PDF.

CBSE Class 122020

• Q.17 (Chemistry (56/1/1)) · Assertion-Reason · Halogens: Weakness of the F-F bond and fluorine atom size PDF
• Q.24 (Chemistry (56/1/1)) · Short answer · Interhalogen and Xenon Compounds: Draw shapes of XeOF4 and BrF3 PDF
• Q.30 (Chemistry (56/1/1)) · Short answer · Group 16-18 Properties: Reasons: sulphurous acid reducing, single F oxoacid, noble gas b.p. trend PDF

CBSE Class 122019

• Q.6 (Chemistry (56/1/1)) · Short answer · Noble Gas Compounds: Balanced equations for XeF2 hydrolysis and MnO2 with conc. HCl PDF
• Q.27 (Chemistry (56/1/1)) · Long answer · Group 15-16 Properties: Reasons on S2 magnetism, N-N bond, ozone stability; Cu with HNO3 gases PDF

CBSE Class 122018

• Q.8 (Chemistry (56/1)) · Short answer · Group 15 Hydrides: Group 15 hydrides with lowest b.p., most basic, largest angle, most reducing PDF
• Q.24 (Chemistry (56/1)) · Long answer · Group 15-18 Properties: Reasons on H3PO3, ClF3, O2 vs S state; draw XeF4 and HClO3 PDF

CBSE Class 122017

• Q.1 (Chemistry (56/1)) · Very short answer · Oxoacids of Phosphorus: Formula of phosphorus compound formed when conc. HNO3 oxidises P4 PDF
• Q.8 (Chemistry (56/1)) · Short answer · Structures of Oxoacids: Draw structures of H2SO3 and HClO3 PDF
• Q.21 (Chemistry (56/1)) · Short answer · Group 15-17 Properties: Reasons: red vs white P reactivity, halogen electron gain, N oxide acidity PDF

CBSE Class 122016

• Q.2 (Chemistry (56/1/N)) · Very short answer · Nitrogen Oxides: Identify brown gas from heating lead nitrate that dimerises on cooling PDF
• Q.7 (Chemistry (56/1/N)) · Short answer · Structures of p-Block Compounds: Draw structures of (HPO3)3 and XeF4 PDF
• Q.16 (Chemistry (56/1/N)) · Short answer · Group 15-17 Properties: Reasons: H3PO2 reducing power, S catenation, reducing trend HF to HI PDF

Other Chemistry chapters

• The Solid State PYQs
• Solutions PYQs
• Electrochemistry PYQs
• Chemical Kinetics PYQs
• Surface Chemistry PYQs
• General Principles of Isolation of Elements PYQs
• The d- and f-Block Elements PYQs
• Coordination Compounds PYQs
• Haloalkanes and Haloarenes PYQs
• Alcohols, Phenols and Ethers PYQs
• Aldehydes, Ketones and Carboxylic Acids PYQs
• Amines PYQs
• Biomolecules PYQs
• Polymers PYQs
• Chemistry in Everyday Life PYQs

FAQ

How many The p-Block Elements questions come in CBSE Class 12?

In the official papers we tagged: 3 in 2020, 2 in 2019, 2 in 2018, 3 in 2017 and 3 in 2016. Not asked in the other 5 years. That is 13 questions in all, about 5% of Chemistry.

Which The p-Block Elements topics repeat in CBSE Class 12?

Asked in the most papers: Group 15-17 Properties, Halogens, Interhalogen and Xenon Compounds. The concept table lists every one with its count.

Are these official CBSE Class 12 questions?

Yes. Every question is from an official CBSE Class 12 paper hosted on our year pages. The one-line summaries are ours; open the PDF linked beside each question for the full text.