What is the longest word in the dictionary?

My location can be determined by the below rebus.
So where am i ?

Before Mount Everest was discovered, what was the highest mountain in the world?

Jack was having a candle light dinner with his girlfriend. Suddenly a cold gush of wind entered through the open window and three of the ten candles were extinguished. Assuming that none of the other candles were extinguished.

How many candles are they left with in the end ?

A Miser man decided to go on a vacation for a month. He goes to the bank and asks for a trip loan of $500. The bank officer asks the man that the loan can only be approved when he mortgage some valuable thing at the bank. Miser man mortgages his only car whose worth was a whopping $80000. The Bank officer laughed at him and approve the loan instantly. After vacation when the miser man returns, the bank officer asked him "Are you an idiot, why is your mortgage such an expensive car for such a short loan?".

Miser man replied with some reason and the bank officer agreed that the miser man is actually not an idiot.

What did miser man reply to the bank loan officer?.

Can you move 2 matchsticks to form four equal sized squares.

Decode below rebus
D
N
A
T
S , D

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?