A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Spot the 3 Differences in the given Picture.

A man plots the murder of his wife. His plan is full proof. Nobody saw them leaving their house. He stabbed her with a knife while driving. She died on the spot. He threw her body in a valley. He threw the knife carefully wiping his finger prints on a random garbage bin. Then he went back to his home and no one was watching him this time as well.

After an hour, he was called by the local police department who informed him that his wife was murdered. They asked him to reach the scene of crime immediately. But as soon as he arrived at the crime scene, he was arrested by them.

How did the police know that he himself is the murderer?

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 can go up a chimney down, but can’t go down a chimney up?

What has to be broken before you can use it?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

Different lights make me strange by changing me into different sizes. What am I?