Previous year questions with solutions · 2000 – 2026
| Year | Questions | Papers | Avg / paper | Weightage |
|---|---|---|---|---|
| 2026 | 4 | 2 | 2 | 4.44% same as last year |
| 2025 | 2 | 1 | 2 | 4.44% ▲ 11.1% vs last year |
| 2024 | 4 | 2 | 2 | 4.00% ▲ 104% vs last year |
| 2023 | 1 | 1 | 1 | 1.96% ▼ 34% vs last year |
| 2022 | 3 | 2 | 1.5 | 2.97% ▼ 33.2% vs last year |
| 2020 | 2 | 1 | 2 | 4.44% ▲ 100% vs last year |
| 2019 | 1 | 1 | 1 | 2.22% same as last year |
| 2017 | 1 | 1 | 1 | 2.22% ▲ 100% vs last year |
| 2016 | 1 | 2 | 0.5 | 1.11% ▼ 50% vs last year |
| 2015 | 2 | 2 | 1 | 2.22% same as last year |
| 2014 | 1 | 1 | 1 | 2.22% ▲ 97.8% vs last year |
| 2013 | 1 | 2 | 0.5 | 1.12% ▼ 10.1% vs last year |
| 2012 | 1 | 2 | 0.5 | 1.25% ▼ 49.4% vs last year |
| 2011 | 2 | 2 | 1 | 2.47% ▼ 50.6% vs last year |
| 2010 | 4 | 2 | 2 | 5.00% ▲ 155% vs last year |
| 2009 | 1 | 1 | 1 | 1.96% ▼ 51% vs last year |
| 2007 | 2 | 1 | 2 | 4.00% ▲ 100% vs last year |
| 2006 | 1 | 1 | 1 | 2.00% ▼ 50% vs last year |
| 2005 | 2 | 1 | 2 | 4.00% ▲ 92% vs last year |
| 2004 | 1 | 1 | 1 | 2.08% ▲ 2.1% vs last year |
| 2003 | 1 | 1 | 1 | 2.04% ▼ 66% vs last year |
| 2002 | 3 | 1 | 3 | 6.00% ▲ 206% vs last year |
| 2001 | 1 | 1 | 1 | 1.96% |
Amongst the elements with following electronic configurations, which one of them may have the highest ionisation energy ?
Identify the correct order of the size of the following:
With which of the following electronic configuration an atom has the lowest ionisation enthalpy?
Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species ?
A nuclide of an alkaline earth metal undergoes radioactive decay by emission of three -particles in succession. The group of the periodic table to which the resulting daughter element would belong is
Ionic radii are
The ions O2-, F-, Na+, Mg2+ and Al3+ are isoelectronic. Their ionic radii show
Which of the following order is wrong?
An atom has electronic configuration 1s2 2s2 2p6 3s2 3p6 3d3 4s2, you will place it in which group?
Correct order of 1st ionization potential among following elements Be, B, C, N, O is