Answer:
I have no weight but I could destroy a mansion. What am I?
I am black and white. I have strings I have keys. I make sound without my lips. I make dough with no flour
You use a knife to slice my head and weep beside me when I am dead.
To you, rude would I never be, though I flag my tongue for all to see. What am I?
What is at the end of a rainbow?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.