Once you find the relevant sentence, do not look outside it. Many wrong answers come from borrowing words from a neighboring sentence.

Having minute spaces or holes through which liquid or air may pass. (Scientific/Technical passage staple).

This article dissects every component of that keyword, providing you with a masterclass in achieving perfection in the IELTS Reading exam.

If you are stuck on a "Not Given" question, move on. "Not Given" answers are the most time-consuming because students keep re-reading to find information that isn't there. Make an educated guess and return later if time permits.