According to Halacha 1, when does forbidden yeast cause an entire dough to become prohibited regardless of quantity?
Halacha 1 states that if the forbidden yeast has sufficient quantity to leaven the entire dough, it forbids the whole mixture — its functional potency, not its proportion, triggers the prohibition.
Question 2
Which of the following is NOT listed among the seven 'significant entities' that are never nullified (Halacha 2)?
Halacha 2 lists nuts from Perach, pomegranates from Baden, sealed barrels, round loaves, beet heads, squash, and homeowner's loaves. Olives from the Galilee are not on this list.
Question 3
What does Halacha 8 teach about locally significant items in communities outside the Talmudic era?
Halacha 8 rules that any item treated as important by the inhabitants of a given place — even post-Talmudic — holds the same status as the Talmudic seven, making significance culturally and locally determined.
Question 4
Under Halachot 16–18, which pair of forbidden substances can mutually help nullify each other?
Halachot 16–18 detail a tri-directional system: terumah nullifies orlah/kilayei, orlah nullifies terumah, and orlah and kilayei can nullify each other — each providing the quantity needed to tip the other's ratio.
Question 5
When wine poured as a libation to idols (yayin nesech) falls on figs, what is the ruling and why (Halacha 32)?
Halacha 32 rules that the figs are permitted because wine actually impairs (damages) the flavor of figs — the forbidden wine imparts no benefit to the figs, so there is no flavor-based prohibition.