Verbal Reasoning - Mental Ability Questions

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it? d_c_d_cb_c_b

Three words in bold letters are given in each question, which have something in common among themselves. Out of the four given alternatives, choose the most appropriate description about these three words.

Abhi Bhattacharya: Utpal Dutt: Satyajit Ray

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

Spring, Summer, Monsoon, ?

If in a certain language, SCARCE is coded as CSRAEC, how is STABLE coded in that code?

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

T, Q, N, K, ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series. NIP, KGO, HEN, ECM, ?

From the given answer figures, select the one in which the question figure is hidden/embedded. 

In the question, a word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in two matrices given below. The columns and rows of Matrix I are numbered from 0 to 4 and that of Matrix II are numbered from 5 to 9.A letter from this matrix can be represented first by its row and next by its coloum ex "A" can be represented by 03,10,etc and "P" can be represented by 55, 67, etc. Similarly, you have to identify the set for the word "REST".