Questions & Answers about Рис сварится через двадцать минут.
Because свариться is a perfective verb. In Russian, perfective verbs do not have a true present tense. Their “present-looking” forms express the future.
So:
- сварится = will get cooked / will be ready
- not is getting cooked
This is a very common Russian pattern:
- сделает = will do
- напишет = will write
- сварится = will cook / will be cooked
Because сварится focuses on the result: the rice will finish cooking.
Compare:
Рис сварится через двадцать минут.
= The rice will be cooked / ready in twenty minutes.Рис будет вариться через двадцать минут.
= The rice will be cooking in twenty minutes.
So сварится is about completion, while будет вариться is about the process.