31
PbO2 PbO; G298 < 0 SnO2 SnO; G298 > 0 Most probable oxidation state of Pb and Sn will be
- Pb4+, Sn4+
- Pb4+, Sn2+
- Pb2+, Sn2+
- Pb2+, Sn4+
AIPMT 2001
p-Block Elements (Group 13 & 14)
Previous year questions with solutions · 2000 – 2026
32Questions
21Papers covered
2.22% Weightage in 2026
’00
’01
’03
’04
’07
’09
’10
’11
’13
’15
’16
’17
’18
’19
’20
’22
’23
’26
Year-wise statistics questions · papers · average per paper · weightage
| Year | Questions | Papers | Avg / paper | Weightage |
|---|---|---|---|---|
| 2026 | 2 | 2 | 1 | 2.22% ↓43.3% |
| 2023 | 2 | 1 | 2 | 3.92% ↓1% |
| 2022 | 4 | 2 | 2 | 3.96% ↑78.2% |
| 2020 | 1 | 1 | 1 | 2.22% ↓50% |
| 2019 | 2 | 1 | 2 | 4.44% →0% |
| 2018 | 2 | 1 | 2 | 4.44% ↑100% |
| 2017 | 1 | 1 | 1 | 2.22% →0% |
| 2016 | 2 | 2 | 1 | 2.22% ↑100% |
| 2015 | 1 | 2 | 0.5 | 1.11% ↓80.2% |
| 2013 | 5 | 2 | 2.5 | 5.62% ↑355.1% |
| 2011 | 1 | 2 | 0.5 | 1.23% ↓1.2% |
| 2010 | 1 | 2 | 0.5 | 1.25% ↓68.1% |
| 2009 | 2 | 1 | 2 | 3.92% ↓2% |
| 2007 | 2 | 1 | 2 | 4.00% ↑92% |
| 2004 | 1 | 1 | 1 | 2.08% ↑2.1% |
| 2003 | 1 | 1 | 1 | 2.04% ↑4.1% |
| 2001 | 1 | 1 | 1 | 1.96% →0% |
| 2000 | 1 | 1 | 1 | 1.96% |
⚠ 1 of these questions are out of the current syllabus (marked on the question).
32
Which compound is electron deficient?
- PCl3
- BCl3
- CCl4
- PCl5
AIPMT 2000