Verbal Reasoning - Mental Ability Questions

Which of the following interchanges in signs and numbers will make the given equation correct?
7 x 9 + 5 = 68

If 4 cats can kill 4 rats in 4 minutes, how many minutes will it take 8 cats to kill 8 rats?

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.
 
15 x 4 ÷ 35 - 70 + 16 = ?

In a certain code language, '-' represents 'x', '÷' represents '+', '+' represents '÷' and 'x' represents '-'. Find out the answer to the following question.

160 + 8 x 30 ÷ 4 - 6 = ?

In the following question, select the related number from the given alternatives.
3 : 27 : : 4 : ?

A man walks 7 km towards south and turns to the left. After walking 5 km, he turns to the right and walks 7 km. In which direction is he now from the starting point?

If 16α1 = 8, 14α6 = 42 and 12α5 = 30, then find the value of 2α6 = ?

If I=9 and SLIP=56, then FALL= ?