What has 13 hearts but no other organs?

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

What does below chemistry rebus means?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

How many times in a given day, minutes and hour clock comes in a straight line ?

There are seven sisters in a house in a village where there is no electricity or any gadget.

Sister-1: Reading Novel
Sister-2: Cooking
Sister-3: Playing Chess
Sister-4: Playing Sudoku
Sister-5: Washing clothes
Sister-6: Gardening

what is Sister-7 doing ?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?