help me solving a girl's puzzle?

[S.M.R.]

Last week i went to Madurai to meet my friend.But he with his family have gone for an excursion.
As i was in thirst, i knocked next by house .A 10 year girl gave me water.
I asked her what she was doing?. She said,"I am cooking the child and burning the mother".( puzzle 1)
I asked her where her father is?. She said,"He has gone to
mix the sand with the sand". (puzzle 2)
I asked her where her mother is?. She said,"She has gone to
make single in to double". (puzzle 3)
I was not able to follow her. Knowing my face she said that she will ask one puzzle and if i answer it,she will explain every thing
in detail.
The puzzlle is : (puzzle 4) A cap in the top and a cap in the bottom, a burning candle in-between. what is that ?

Can any one help me in solving all the puzzle.
all the 4 answer will be posted after 3 days

[tah326_sharemickey]

sorry clueless

[the girl in black]

Gosh, I'm afraid I don't know the answer to any of them, but #4's answer could be a lantern. Please email me the answers to all the riddles when you have them 'cause I'd really like to know!