How to solve surface chemistry numericals

there's only two JEE Advanced PYQs on a numerical question from surface chem one in 2024 one in 2025 and that's it

My teacher didn't make me solve any numerical questions and even though i've solved the 2024 and 2025 one I couldn't without seeing the solution the first time (idk approach nahi bani)

I think it's a high probability that another such question will come this year also, maybe something like the question in today's AYJR (wasn't able to solve that either lol)

What is the general approach? Where can I practice such questions? preferably videos on Youtube or with solutions because i want to learn the approach

Thanks guys

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u/Spartan_Leather — 3 months ago