Verbal Reasoning - Mental Ability Questions

A brother and sister leave home for school. The brother goes 0.5 km East, then turns right and goes 3.5 km and reaches his school. The sister goes 2.5 km North, then 1 km West, then turns left and goes 6 km and reaches her school. Where is the brother's school with respect to the sister's school?

A points to B and says to a lady C "His mother is the only daughter of your father". If so, how is C related to B?

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

While introducing a boy, Raju says, "He is the son of my wife's sister." How is the boy related to Raju?

In the following question, select the related word from the given alternatives.
Goiter : Iodine : : Anemia : ?

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

50 + 5 - 700 x 28 = ?

C has more money than E and E has more money than B. C is the second richest after A. Who has the least money out of A, B, C and E?

Select the related word/letters/number from the given alternatives.
ACE : HJL:: LNP : ?