Which of the following chemical species is not isoelectric with a neon atom?
As long as you understand what iso- means, you can easily derive the answer from the answer choices.
Which of the following explains why a sound heard through a wall has a lower intensity than one heard without a wall between the source and listener?
This question actually outright punishes people who memorize, because the intuitive (correct) answer is "no ****, Sherlock!" but the distractors are likely to seem very appealing to someone who has been memorizing their Physics books!
A solid body can be in rotational equilibrium only when...
Once again -- concept question. If you get the concept, memorization is totally unnecessary. The correct answer is easily derived via physical intuition and knowing what "rotational" and "equilibrium" mean -- which are both things you should definitely know coming out of any physics or chemistry or biology course.
A reaction is designed to produce ammonia...
[lists rxn]. Introducing catalyst to this reaction does what?
If you understand how a catalyst works, this is all conceptual. Once again, it's a matter of understanding not memorization.
Which of the following is most likely to be soluble in 1.0 M HCl than in 1.0 M NaOH?
If you understand what makes something soluble, this is a ridiculously easy question. No need to memorize ridiculous solubility rules if you know why something is soluble/not soluble.