Choose or find odd pair of words - (Chaff : Wheat) , (Grit : Pulses) , (Grain : Crop) , (Dregs : Wine)

C. GRAIN : CROP

Arrange the given words Alphabetical Order and choose the one that comes first.

A. BLAST

In the following question, a matrix of certain characters is given. These characters follow a certain trend, row-wise or column-wise. Find out this trend and choose the missing character accordingly.
12 (47) 21
10 (52) 4
64 ? 24

D. 83

(i) In a family of six persons A, B, C, D, E and F, there are two married couples.
(ii) D is grandmother of A and mother of B.
(iii) C is wife of B and mother of F.
(iv) F is the grand daughter of E.

Who among the following is one of the couples ?

B. DE

Choose analogous pair - Coal : Thermal

D. WATER : HYDEL