What's the best answer to this question: is copper ii sulfate pentahydrate soluble in water?

OPTIONS:
- no
- yes
Answer: yes

What's the best answer to this question: is there a visa on arrival in sri lanka?

OPTIONS:
- no
- yes
Answer: yes

What's the best answer to this question: are cooking oil and vegetable oil the same?

OPTIONS:
- no
- yes
Answer:
yes