What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

How many triangles can you find in this given picture?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?

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

Why are all black people so quick ?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Whats the next number in the below number sequence pattern.

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?