You are presented with the quiz "Why do we generally treat H2O?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "treating water is used to remove harmful substances before drinking" and "for a scientist, water is H2O whether from the Ganga or a tap".   So, what's the best answer to the question?
OPTIONS:
- to add water to crops
- hydration
- vaporization
- to water the garden
- to drink it
- looseness
- to track it
- evaporation

Answer: to drink it


You are presented with the quiz "When it rains in the mountains where would the rain fall?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "precipitation falls on the windward side of the mountain range" and "rain is also known as precipitation".   So, what's the best answer to the question?
OPTIONS:
- looseness of dirt or compost
- Plant growth is reduced
- It used to be covered by water
- Inches or fractions of inches.
- air mass over Earth's surface
- on the windward side
- In the winter
- colder and wetter

Answer: on the windward side


You are presented with the quiz "What does salt do to ice?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "adding salt to a solid decreases the freezing point of that solid" and "salt is used as a deicer because it lowers the freezing point of water".   So, what's the best answer to the question?
OPTIONS:
- reduce
- Freezes it
- watershred
- Makes more ice
- Turns it into carbon
- Melts it
- evaporation
- protect them

Answer:
Melts it