Keyboard words are not in alphabetical order, Why?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

I know a nine-letter word having only one vowel.
Do you ?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

How can you tell a raw egg from a hard-boiled egg?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?