The Riddler Crossword Puzzle

QUESTIONS LIST:

• swims: what five-letter word typed in all capital letters can be read the same upside down?
• zero: if you multiply this number by any other number, the answer will always be the same. what number is this?
• snowflake: i'm not a blanket, yet i cover the ground; a crystal from heaven that doesn't make a sound. what am i?
• soap: what gets smaller every time it takes a bath?
• seven: i am an odd number. take away a letter and i become even. what number am i?
• a promise: what can you break without touching it?
• bottle: what has a neck but no head
• down: what comes up must come ...
• lettuce: what has a head but no brain
• incorrectly: which word in the dictionary is spelled incorrectly?
• alphabet: what word contains 26 letters but only has three syllables?
• feather: i am easy to lift, but hard to throw.