Solve this riddle by finding the odd one out from the rest.

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

I am quite hot but become too cold if you remove the first two letters. What am I?

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

Can it be possible to build a house that has all its four walls facing towards the South?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?