Verbal Reasoning - Mental Ability Questions

From the given alternative words, select the word which cannot be formed using the letters of the given word:
ECCENTRICITY

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

Qutb­ud­din Aibak, Iltutmish, ?, Ghiyas­ud­din Balban

Which set of letters when sequentially placed at the gaps in the given letter series shall complete it?

x_zz_xx_z_yx

In the following question, select the related number from the given alternatives.13 : 167 : : 23 : ?

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

In the following question, select the missing number from the given options?

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

Arctic Circle, Tropic of Cancer, ? , Tropic of Capricorn

Saurav, Mohit, Mukesh, Sumit and Bhim are arranged in descending order of their height from top to bottom. Saurav is at third place. Bhim is between Sumit and Saurav while Sumit is not at the top end. Who is at second place from the top?