Find The Odd One Out

1. FLOW
2. SNIP
3. TRAP
4. DRAW
5. BACK

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

How many words can a pen with half refill write?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

A bomb exploded in a room full of married couples and no one died. How?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

A farmer went to a market and bought a wolf, a goat, and a cabbage. On his way home, the farmer came to the bank of a river and rented a boat. But crossing the river by boat, the farmer could carry only himself and a single one of his purchases: the wolf, the goat, or the cabbage. If left unattended together, the wolf would eat the goat, or the goat would eat the cabbage. The farmer’s challenge was to carry himself and his purchases to the far bank of the river, leaving each purchase intact. How did he do it?

There are two words one resembles the "state of rest" and the other is related to "writing/reading material".

Can you name these two words which also sound similar?