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?

How many sides does a circle have?

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

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

What does below rebus means ?

Take one out and scratch my head, I am now black but once was red. What am I?

What can you serve, but never eat?

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

Move four matchsticks to the below square to form three squares?