Verbal Reasoning - Mental Ability Questions

In the following question, select the related word pair from the given alternatives.
Canada : Ottawa : : ? : ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

CD, ? , MN, UV, EF

In a certain code language, “NOTES” is written as “141520519” and “MAKAR” is written as “13111118”. How is “LOFTS” written in that code language?

In a certain code language, “MOCKS” is written as “NNDJT”. How is “FLAME” written in that code language?

If SWEET is written as XAHGU, then HORSE is

Choose the odd word/letters/number/number pair from the given alternatives.

Sumitra remembers that her mother's birthday is after 13th February but before 16th February but her brother remembers that his mother's birthday is after 14th February but before 17 th February. On which date Sumitra's mother's birthday will be celebrated?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?
25 + 10 ÷ 240 x 16 = ?