Verbal Reasoning - Mental Ability Questions

If wall is called window, window is called door, door is called floor, floor is called roof and roof is called ventilator, What will a person stand on ?

Stee : Rails :: Alnico : ?

Consider the following information and answer the questions based on it.

Out of 60 people in a colony, 10 speak only Bengali, 5 speak only Assamese, 10 speak both Hindi and Odia, 12 speak both Marathi and Hindi, 13 speak English, Tamil and Marathi, 5 speak both Assamese and Hindi and the remaining speak both Bengali and Hindi.

The ratio of people who speak Bengali to those who speak Marathi is

Answer the questions based on the below information.

If '+' is 'x', '-' is '+', 'x' is '/' and '/' is '-' then 6 - 9 + 8 x 3 / 20

If Kamal says, ellavi's mother is the only daughter of my mother", how is Kamal related to Ravi  

In the following question, various terms of an alphanumerical series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. 3F, 6G, 11I, 18L, ?

Winter : Hibernation :: Summer : ?

If the letters of the word OBSERVANT are interchanged, such that the first becomes ninth, second becomes eighth and so on, and the position of the fifth letter remains unchanged then what will be the new arrangement of letters?