What has to be broken before you can use it?

Which of the below owl is odd one out?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

When it's bad luck to meet a black cat?

Which tank will fill first?

There is a place where if I stand up straight, I will still be considered sideways.