Mechanical Operations In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called __________ is produced. Tailing Middling None of these Concentrate Tailing Middling None of these Concentrate ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following must be stored in silos and not in open yard? Coke breeze None of these Sand High V.M. bituminous coal Coke breeze None of these Sand High V.M. bituminous coal ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator? Cresylic acid Sodium carbonate Calcium carbonate Copper sulphate Cresylic acid Sodium carbonate Calcium carbonate Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A fluid energy mill is used for Cutting Crushing Grinding Ultra grinding Cutting Crushing Grinding Ultra grinding ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The specific surface of sherical particles is proportional to (where, Dp = diameter of particle). 1/D²p 1/Dp Dp D²p 1/D²p 1/Dp Dp D²p ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is √2 1.5 2 √3 √2 1.5 2 √3 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS