What does below chemistry rebus means?

I taste better than I can smell. Who am I?

If eleven plus two equals one, what does nine plus five equal?

Can you find out the remainder when 3^300 is divided by 5?

A devotee visits 9 temples when he visits India. All these nine temples have one thing in common - there are 100 steps in every temple. The devotee puts the Re.1 coin after climbing up every step. He does the same while climbing down every step. At each temple, the devotee offers half of his money from his pocket to god. In this way, his pocket becomes empty after he visits the 9th temple.

Can you calculate the total amount he had initially?

Out of four images which one is the odd one out?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

John was piloting a plane behind a car but was never able to overtake it. Why?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?