How to read this chapter's question shapes
Every one of the questions below is a real NEET paper item, and between them they use six shapes. Each shape has a way in, and knowing the way in is worth as much as knowing the content, because it tells you where to spend the ninety seconds you have.
The classify-the-method question. The chapter sorts its methods on two entirely separate axes, and the commonest mistake is to run them together. One axis asks whether a method uses neither drug nor device. The other asks whether a hormone is involved anywhere in how it works. A method may sit on both axes, on one, or on neither, so a single method can be natural and hormone-involving at the same time. When an option set asks you to sort methods, decide first which axis the stem is using, then take each name against a list you have already learned, not against instinct. Instinct is the failure mode here, because an option can look as though it belongs to a family for reasons that have nothing to do with the test the axis actually applies.
The four-row match list. A match question is four questions wearing one coat, and it is almost never necessary to answer all four. Find the single row you are surest of, strike every option that contradicts it, and look at what is left; two confident rows settle nearly every list this chapter sets. The rows worth being surest about are the ones whose names give nothing away, because those are the rows the examiner is actually testing rather than the ones a candidate can read off the label. Where a numeral appears inside a device's name, treat it as noise: the numerals in this chapter do not encode what the device releases.
The closed-roster question. Several stems ask whether a name belongs to a list. These lists are genuinely closed, so the work is membership, name by name, and not plausibility. A disease can be infectious, communicable, serious and widespread and still not be on the list, because the list is defined by the route of transmission and by nothing else. Read every name in the option before you accept it: where an option carries three names, one intruder spoils the whole option, and the intruder is usually the least conspicuous name rather than the most.
The assisted-reproduction acronym. The six acronyms are laid out in the previous section's notes, and they come apart on the two questions used there. Ask those two questions of the stem before you look at the options, and the options will sort themselves. One of the acronyms is the odd one out on a third axis as well, in that it is not a transfer procedure at all; noticing which one that is turns a four-way guess into a two-way one.
The assertion and reason. Decide each statement on its own before you look at the relation between them, and write down the two verdicts. Only then ask whether the reason explains the assertion, and be strict about it: a reason may be perfectly true, and may even be about the same subject, while explaining something other than what the assertion claims. That gap -- both true, but not an explanation -- is the one most often missed, and it is not the only trap: a paper may equally make the assertion itself false while the reason stands on its own. Where a statement mentions a practice the state has acted against, settle what the action actually was before you judge the statement at all.
The multi-statement select. Several stems list four, five or six labelled rows and ask which combination is correct. Do not evaluate all of them. Look first for a row that is false on a single word -- these papers repeatedly build one out of a qualifier that reverses the sense -- strike every combination containing it, and see how many options survive. One false row usually leaves two, and a second settles it. A row describing something the chapter never discusses at all is a false row too.
[NEET Important] Time is the real constraint in this section. The match lists and the multi-statement items look long and are not: each is settled by one or two rows you either know or do not. Answer them on the rows you are sure of, and do not read the remaining rows to confirm what elimination has already told you.