If all the digits of the number ' 879593548378 ' are arranged in descending order from the left end, then what will be the sum of 2^nd, 6^th and 8^th digit from the right end after the rearrangement?

The C:N ratio of cultivated soil varies:

What is the name of a dual-purpose Indian cattle breed that was widely exported to Latin American countries in the past? 

Maximum segregation is observed in:

Orobanche is a problem weed in

.................. soil is always acidic in nature.?

Sugarbeet belongs to family

Give the chronological order in the development of following herbicides

A. Atrazine

B. 2, 4-D

C. Bispyribac Sodium

Cotton variety bollgourd is resistant to 

The sowing of maize in kharif season in 2 ha and the sowing of mustard in Rabi season in one hectare, what is the intensity of crop?

In British Drug House (BDH) method of pH testing, soil is mixed with distilled water, universal indictor solution and ______for a colour reaction.