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Mechanical operations
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ The energy consumed by a ball mill depends on all (a), (b) and (c). [other wrong options] [Discuss in forum] |
| Q2 ⇒ Solid particles of different densities are separated by sorting classifier [other wrong options] [Discuss in forum] |
| Q3 ⇒ __________ mills fall in the category of tumbling mills, all (a), (b) & (c) [other wrong options] [Discuss in forum] |
| Q4 ⇒ Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the sedimentation [other wrong options] [Discuss in forum] |
| Q5 ⇒ Apron conveyors are used for heavy loads & short runs. [other wrong options] [Discuss in forum] |
| Q6 ⇒ In a roll crusher, both the rolls all (a), (b) and (c). [other wrong options] [Discuss in forum] |
| Q7 ⇒ A 30% (by volume) suspension of spherical sand particles in a viscous oil has a hindered settling velocity of 4.44 μm/s. If the Richardson Zaki hindered settling index is 4.5, then the terminal velocity of a sand grain is 1 μm/s [other wrong options] [Discuss in forum] |
| Q8 ⇒ Separation of solid particles based on their densities is called sorting [other wrong options] [Discuss in forum] |
| Q9 ⇒ Mixing of plastic solids is generally facilitated by kneading [other wrong options] [Discuss in forum] |
| Q10 ⇒ Shell and leaf filter as compared to plate and frame filter all (a), (b) & (c) [other wrong options] [Discuss in forum] |
| Q11 ⇒ Wet grinding in a revolving mill __________ as compared to dry grinding. increases capacity [other wrong options] [Discuss in forum] |
| Q12 ⇒ Pick out the wrong statement. Cutting machines mainly employ 'attrition' for size reduction of solids. [other wrong options] [Discuss in forum] |
| Q13 ⇒ Float and sink test determines the possibility of cleaning of coal by a process based on the gravity separation [other wrong options] [Discuss in forum] |
| Q14 ⇒ For coarse reduction of hard solids, use compression [other wrong options] [Discuss in forum] |
| Q15 ⇒ Which of the following screens has the maximum capacity ? Vibrating screen [other wrong options] [Discuss in forum] |
| Q16 ⇒ Which of the following is not categorised as a "mechanical operation" ? Humidification [other wrong options] [Discuss in forum] |
| Q17 ⇒ Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the density separation. [other wrong options] [Discuss in forum] |
| Q18 ⇒ The filtrate flow rate in constant pressure filtration continuously decreases. [other wrong options] [Discuss in forum] |
| Q19 ⇒ Which of the following is the most suitable for handling fibrous and dense slurries ? Cone type agitator [other wrong options] [Discuss in forum] |
| Q20 ⇒ __________ mill is normally used for grinding of talc. Ring-roll [other wrong options] [Discuss in forum] |
| Or |