I am white when I am dirty, and black when I am clean. What am I?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

Find the hidden panda in the image below.

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

What do you answer even though it never asks you questions?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

The cream is heavier than Milk. True or False?

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

12345 a famous South Indian actor
567 is a path in jumbled form
8 & 10 are same letters
9 is one among the first six alphabets.
WHO AM I?

You can see it everyday, But cannot touch it at will. What is it?