Mechanical Operations

Sulphuric acid mist is arrested by using a ____________ scrubber?

Byadmin February 18, 2019August 22, 2021

Sulphuric acid mist is arrested by using a ____________ scrubber?

A. Packed wet
B. Hollow wet
C. Venturi
D. Co-current

Mechanical Operations

Fibrous material is broken by a__________________?

Fibrous material is broken by a__________________?

A. Roll-crusher
B. Squirrel-cage disintegrator
C. Ball mill
D. Tube mill

Read More Fibrous material is broken by a__________________?
Mechanical Operations

Which of the following screens has the maximum capacity ?

Which of the following screens has the maximum capacity ?

A. Grizzlies
B. Trommels
C. Shaking screen
D. Vibrating screen

Read More Which of the following screens has the maximum capacity ?
Mechanical Operations

Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a____________________?

Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a____________________?

A. Disc bowl centrifuge
B. Sharpies super-centrifuge
C. Batch basket centrifuge
D. Sparkler filter

Read More Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a____________________?
Mechanical Operations

A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is_____________?

A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is_____________?

A. 0.1
B. 0.4
C. 0.6
D. None of these

Read More A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is_____________?
Mechanical Operations

Grizzlies are used for separating _____________ solids?

Grizzlies are used for separating _____________ solids?

A. Coarse
B. Fine
C. Any size
D. None of these

Read More Grizzlies are used for separating _____________ solids?
Mechanical Operations

What is the reduction ratio in a fine crushing operation having following feed and product sizes ?

What is the reduction ratio in a fine crushing operation having following feed and product sizes ?

A. 0.5
B. 2
C. 5
D. 10

Read More What is the reduction ratio in a fine crushing operation having following feed and product sizes ?

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