What level of impurity are hands assigned according to the Rabbinic decree?
Halacha 2: hands are always treated as second derivatives (sheni) — this is the decree, even if they touched a primary source directly.
Question 2
Do piggul and notar (invalid sacrificial foods) combine with each other to reach the egg-sized measure for hand impurity?
Halacha 3: piggul and notar do not combine with each other even though each requires the same egg-sized measure — because hand impurity is Rabbinic and the Sages did not apply this combination.
Question 3
For which purpose did King Solomon originally decree that hands are impure?
Halacha 8: Solomon's decree was for kodesh (consecrated food) only. Later Sages extended it to terumah.
Question 4
Which texts are specifically stated as NOT defiling hands in this chapter?
Halacha 14 (halacha 15): scrolls written by heretics do not defile hands; neither does the sotah passage since it is intended to be erased.
Question 5
If impure hands (2nd degree) touch a liquid that then touches other foods — to what degree are those foods impure?
Halacha 10: hands are 2nd degree; if they touch a liquid, the liquid becomes primary (techilah); if that liquid touches food, the food becomes 2nd degree. Liquids are always primary when impure.