[Q]: Keith was a studying for his chemistry exam. He got interested in solubility of different substances. For that, he conducted five tests, test A, test B, test C, test D, and test E. in test A, he used some liquid solute in a solvent in room temperature. Then in test B, he increased the temperature. In test C, he used some gaseous solute in a solvent in room temperature. But in test D, he increased the temperature. Finally, in test E he replaced the solvents in each of the earlier tests with water. In which case the solute would be more soluble, case C or case D?
****
[A]: case C

[Q]: Brad and Dale went to the doctor for a check up. Brad did some blood tests and found out he has very high cholesterol levels, while his partner Dale had normal cholesterol levels, and was very healthy. Brad got scared and started worrying. Which friend had more plaque on his blood vessels?
****
[A]: Brad

[Q]: Two neighboring cities are situated in a volcanic area with lots of earthquakes. Park city is situated near a very active volcano, while Hill city is situated 50 miles north. Which city experiences more continuous strings of earthquakes?
****
[A]: Park

[Q]: Two students learned about soils in school. Brad had to study forest soils, while his colleague Frank had to study grasslands. They both did a good job and received A's for their efforts and accumulated knowledge. Which student read more about a rich diversity of large trees?
****
[A]:
Brad