p-Block Elements is a Class 12 Chemistry chapter that carries about 8.0% of the Chemistry questions in NEET. Practise it with 62 questions covering 6 topics, each with an explanation.
Sets of 15 questions that adapt to your level, with an explanation for every answer.
Across the 13 previous year papers, p-Block Elements had 40 questions, about 3.1 a year. The most in one paper was 7, in NEET 2019.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 3 |
| NEET 2025 | 2 |
| NEET 2024 | 1 |
| NEET 2023 | 3 |
| NEET 2022 | 2 |
| NEET 2021 | 3 |
| NEET 2020 | 4 |
| NEET 2019 | 7 |
| NEET 2018 | 2 |
| NEET 2017 | 6 |
| NEET 2016 | 3 |
| Re-AIPMT 2015 | 3 |
| AIPMT 2014 | 1 |
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
The correct order of acidic strength of the boron trihalides is:
Answer: B. BI3 > BBr3 > BCl3 > BF3
Why: Lewis acidity increases down the group. Back-donation from halogen lone pairs into boron's vacant p-orbital is strongest in BF3 (best 2p-2p overlap), so BF3 is the weakest acid and BI3 the strongest.
Silicones are polymers containing the repeating unit:
Answer: A. R₂SiO
Why: They have Si–O–Si chains with organic groups on silicon, and are used as lubricants and water-repellents.
Hypophosphorous acid (H₃PO₂) is:
Answer: B. monobasic, because it has only one P–OH group
Why: The two P–H bonds are not ionisable.
Concentrated sulphuric acid chars sugar because it:
Answer: C. acts as a dehydrating agent
Why: It removes the elements of water from the carbohydrate, leaving carbon.
Fluorine has a lower electron gain enthalpy (less negative) than chlorine because:
Answer: B. inter-electronic repulsion is high in the small 2p subshell of fluorine
Why: The incoming electron enters the compact 2p subshell of fluorine, where repulsion from the electrons already present offsets the energy released — so chlorine, not fluorine, has the most negative electron gain enthalpy.
The first compound of a noble gas was prepared by Neil Bartlett. It was:
Answer: D. XePtF₆
Why: He noticed that PtF₆ oxidises O₂ and reasoned that it should also oxidise xenon.
Aluminium reacts with aqueous sodium hydroxide to give:
Answer: C. sodium aluminate (tetrahydroxoaluminate) and hydrogen
Why: It shows the amphoteric nature of aluminium.
In graphite, each carbon atom is:
Answer: D. sp² hybridised and bonded to three others in layers
Why: The delocalised π electrons between the layers account for its electrical conductivity.
p-Block Elements carries about 8.0% of the Chemistry questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 40 times, about 3.1 questions a year.
p-Block Elements is a Class 12 Chemistry chapter in the NCERT syllabus.
NeetVictory has 62 practice questions on p-Block Elements, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.
NeetVictory