Chemical Engineering MCQ Quiz - Set 05

Quiz Questions - Set 05

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01. The equipment used in the extraction of highly corrosive radioactive liquids is

     (A) Pulse column

     (B) Spray column

     (C) Mixer settler

     (D) Baffle tower

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02. Isotropic materials have the same __________ in all the directions.

     (A) Thermal properties

     (B) Elastic properties

     (C) Stresses

     (D) All (a), (b) and (c)

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03. The tensile load-elongation curve of a metal does not describe

     (A) Work hardening

     (B) Yield stress

     (C) Anisotropy index

     (D) Necking strain

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04. Machine tool bodies are usually made of

     (A) Cast iron

     (B) Mild steel

     (C) Wrought iron

     (D) Copper alloys

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05. In age-hardenable alloys, maximum ductility is obtained

     (A) In as cast state

     (B) Immediately after solution treatment and subsequent quenching

     (C) After optimum ageing

     (D) After over-ageing

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06. The capital and running costs of similar machines having unequal service life can be compared by the __________ method.

     (A) Equivalent annual cost

     (B) Rate of return

     (C) Present net worth

     (D) Capitalised cost

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07. Dialysis is the process of separating substances in the

     (A) Colloidal state from those present in the true solutions

     (B) Colloidal state from those present in the suspensions

     (C) Suspension from those present in the solutions

     (D) None of these

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08. The yield point in fatigue loading compared to that in static loading is less. The ratio of ultimate tensile strength to endurance limit of a material subjected to fatigue loading is

     (A) 0.5

     (B) 1

     (C) 1.5

     (D) 2

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09. With increase in carbon percentage in steel, its

     (A) Yield stress decreases

     (B) Elongation percent increases

     (C) Tensile strength increases

     (D) Impact strength increases

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10. Which of the following is capable of acting both as an acid flux as well as a basic flux in the metal extraction from its ore?

     (A) Silica

     (B) Lime

     (C) Alumina

     (D) Fluorite

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11. Feed check valve is used in steam boilers to

     (A) Check the water level in the boiler

     (B) Check the feed water flow rate

     (C) Feed high pressure water to boiler and guard against its backflow through it

     (D) None of these

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12. Electric arc furnace is employed mainly for the production of __________ steel.

     (A) High carbon

     (B) Alloy

     (C) Mild

     (D) Plain carbon

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13. A reduction process is accompanied with increase in the

     (A) Number of electrons

     (B) Oxidation number

     (C) Both (a) and (b)

     (D) Neither (a) nor (b)

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14. On-off control

     (A) Fully opens the final control element, when the measured variable is below the set point

     (B) Fully closes the final control element, when the measured variable is above the set point

     (C) Is a two position control (fully open or fully closed) control adequate to control a process with slow reaction and minimum dead time or transfer lag

     (D) None of these

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15. Pick out the wrong statement.

     (A) Erosion corrosion which is identified by surface grooves, occurs due to the combined action of corrosive environment and mechanical abrasion

     (B) Stress corrosion occurs due to the combined action of corrosive environment and the compressive stress

     (C) Stainless steel is prone to stress corrosion in solution containing chloride ion

     (D) In case of stress corrosion, the direction of crack propagation is perpendicular to the applied tensile stress

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 Next Quiz Tests:

Set 01

Set 02

Set 03

Set 04

Set 05

Set 06

Set 07

Set 08

Set 09

Set 10

Set 11

Set 12

Set 13