What is represented by this BrainBat?

cat cat cat cat cat cat cat cat cat cat cat cat

Using the BrainTracker grid below, how many words can you find? Each word must contain the central F and no letter can be used twice, however, the letters do not have to be connected. Proper nouns are not allowed, however, plurals are. Can you find the nine letter word?

Excellent: 28 words. Good: 22 words. Average: 19 words.

Using a tap, a three gallon container and a five gallon container, can you measure exactly 4 gallons, you may empty the containers down the drain?

What is the longest word in the English language?

A large fresh water reservoir has two types of drainage system: small pipes and large pipes.

6 large pipes, on their own, can drain the reservoir in 12 hours.

3 large pipes and 9 small pipes, at the same time, can drain the reservoir in 8 hours.

How long will 5 small pipes, on their own, take to drain the reservoir?