Alphabetical Order of Letters

In the following Colour sequence, R stands for Red, Y for Yellow, G for Green, B for Blue and W for White of the sequence is continued, which colour will come next?
B B R B R W B R W G B R W G Y B R B R W B R W

Which letter is the $7$th to the right of the$13$th letter from your left in the following alphabet series?
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z 

How many meaningful English words can be formed with the letters 'A, H, S' using all the letters but each letter only once in each word?

From the given alternatives words, select the word which cannot be formed using the letters of the given word.
UNCONTAMINATED

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z . Which letter in this alphabet is the eighth letter to the right of the letter and which is tenth letter to the left of the last but one letter of the alphabet?

Which should be the $7$th letter to the right of $18$th letter from the right, if second half of the alphabet is reversed?

ABCDEFGHIJKLMNOPQRSTUVWXYZ

Two letters in the word LEMON have as many letters between them in the word as in the alphabet Which one of the two letters comes earlier in the alphabet ?

Which letter in the word 'Vertex' should be changed to mean spiral movement of air?

From the given alternative words, select the one which can not be formed using the letters of the given word.
TAMBOURINE

From the given alternative words, select the one which can be formed using the letters of the given word?
DISAPPOINTMENT

If the first and second letters in the word 'EXCELLENCE' are interchanged, in the same way Third and fourth letters, the fifth and the sixth letters and so on. Which letter would be the sixth when counted from the right?

Which letter will be $13$th to the left of $11$th letter from the right in the following series of letters?
W Q E T R Y I P U O A G S D F H L K J B C X M V Z N

Arrange the following words according to the dictionary.
1. Chemistry

2. Chamber

3. Cheap

4. Cheerful

5. Cheekbone

Find the odd number/ letters/ number pair from the given alternatives.

In question from the given alternatives select the word which cannot be formed using the letters given in the word?
'DAUGHTER'

If the first four letters of word 'ANTHROPOMORPHISM' are written in reverse order, again next four letters are written in reverse order and if this order is continued, after change which will be twelfth letter from left in the new sequence ?

If the order of first half of the letters in the English alphabet is reversed, which letter will be eighth to the left of fifteenth letter from the left?

Q$2 3$ B $9$ V $5$ L S R F P
If one is subtracted from each of the numbers, which of the following will be the fourth to the right of the tenth from the right?

From the given alternatives select the word which can not be formed using the letters of the given word.

AUTOGRAPHS

Which letter will come exactly between the tenth letter from your left and the seventh letter from your right. Without changing any order in the original from the alphabet?