Chemical Engineering Mcqs

There is practically no alternative/competitor to _________________ in the beneficiation treatment of sulphide ores?

• (A)  Classification
• (B)  Tabling
• (C)  Jigging
• (D)  Froth floatation

Answer

Submitted By :Ali Uppal

Gummy & sticky materials like molasses, sugar etc. are best transported/handled by using a ______________ conveyor?

• (A)  Drag
• (B)  Ribbon
• (C)  Screw
• (D)  Slat

Answer

Submitted By :Ali Uppal

Sphericity of pulverised coal is__________________?

• (A)  1
• (B)  < 1
• (C)  > 1
• (D)  ∞

Answer

Submitted By :Ali Uppal

The reduction ratio for grinders is defined as (where, Df and Dp are average diameters of feed and product respectively) ?

• (A)  Df/Dp
• (B)  Dp/Df
• (C)  Df – Dp
• (D)  None of these

Answer

Submitted By :Ali Uppal

Maximum size reduction in a ball mill is done by the, ______________ action?

• (A)  Attrition
• (B)  Compression
• (C)  Impact
• (D)  Cutting

Answer

Submitted By :Ali Uppal

Which of the following is a fine crusher ?

• (A)  Blake jaw crusher
• (B)  Gyratory crusher
• (C)  Toothed roll crusher
• (D)  Dodge jaw crusher

Answer

Submitted By :Ali Uppal

The crushed material received for separation is called feed or_________________?

• (A)  Tailing
• (B)  Heading
• (C)  Concentrate
• (D)  Middling

Answer

Submitted By :Ali Uppal

A filter press is___________________?

• (A)  A batch filter
• (B)  Not suitable, if the liquid is the main product
• (C)  Having prohibitively high maintenance cost
• (D)  Not suitable for wide range of materials under varying operating conditions of cake thickness and pressure

Answer

Submitted By :Ali Uppal

Pick out the material having minimum Rittinger’s number?

• (A)  Calcite
• (B)  Pyrite
• (C)  Quartz
• (D)  Galena

Answer

Submitted By :Ali Uppal

Wheat is ground into flour in a___________________?

• (A)  Hammer crusher
• (B)  Roller crusher
• (C)  Impact mill
• (D)  Fluid energy mill

Answer

Submitted By :Ali Uppal