What does below chemistry rebus means?

I have eight fingers and two thumbs but I do not live. What Am I?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

Find the last number in the series below:

voN luJ yaM raM ---

What country can make you shiver?

What English word has three consecutive double letters?

What does an Island and the letter T have in common?