What is the word or phrase?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

I purchased an awesome ice cream cone having 5 different flavour scoops.
Five flavours are pistachio, mint-chip, strawberry, marshmallow, and raspberry

I will give u some clues so that you can figure out the order of flavours from bottom to top.
1. The bottom flavour of the cone has 10 letters.
2. The marshmallow scoop is between the pistachio and the mint-chip scoop.
3. marshmallow is the raspberry scoop but below the mint-chip scoop.

So can you figure out the flavour of ice cream in order from bottom to top?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Solve the rebus riddle in the picture below.

You can win me and lose me but never buy me
You can not eat me and never want to part with me
I can make you cry or bring you joy
I am not a machine and definitely not a toy
You keep me but i am not forever just yours
You might find me in a case or on a shelf next to a vase
I am hard and i am tall if you bump me i am sure to fall
I am made of different materials and am at many events
If your lucky and fight hard I might be yours
What am I ?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?