Can you identify if it's a murder or a suicide ?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

There is a five-letter word which has 3 consonants(all are same) and 2 different vowels.
Also, something wrong is associated with the word.

Can you name it?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

There are two insects on a tile. Insect X is sitting on one side of the tile (point A) and Insect Y is sitting opposite on the other side of the tile (point B). Now both of them decide to change their position and thus X starts crawling to point B and Y starts crawling to point A. When they meet and pass each other in between, X takes 20 seconds to reach B and Y takes just 5 seconds to reach A.

Can you calculate the total time each of the insects took to change their positions?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?