Chemical Engineering CBT Quiz - Set 11

Quiz Questions - Set 11

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01. A material expanding freely due to heating will develop __________ stress.

     (A) No

     (B) Compressive

     (C) Tensile

     (D) Thermal

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02. Which of the following pair is correctly matched?

     (A) Heat transfer: Thermal diffusivity

     (B) Mass transfer: Diffusion co-efficient

     (C) Momentum transfer: Kinematic viscosity

     (D) All 'a', 'b' & 'c' are correctly matched

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03. Presence of sulphur in the fuel fired in a furnace

     (A) Contributes to its heating value

     (B) Helps in electrostatic precipitation of ash from flue gases

     (C) Corrodes ducts & air preheater, if the flue gas temperature is low

     (D) All 'a', 'b' & 'c'

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04. Addition of beryllium to copper is done mainly to produce a/an __________ alloy.

     (A) Non-sparking & non-magnetic

     (B) High strength

     (C) Precipitation hardenable

     (D) Corrosion resistant

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05. Which of the following hardness tests uses the depth of penetration caused by the indentor as the parameter for arriving at the hardness value of a material?

     (A) Shore scleroscope test

     (B) Vickers hardness test

     (C) Brinell hardness test

     (D) Rockwell hardness test

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06. The tensile strength of plastics ranges from __________ kg/mm square.

     (A) 10 to 50

     (B) 50 to 100

     (C) 0.01 to 0.1

     (D) 0.1 to 10

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07. Which of the following metals can be extracted from its ore by both Pyrometallurgical as well as hydrometallurgical methods?

     (A) Copper

     (B) Zinc

     (C) Both 'a' & 'b'

     (D) Neither 'a' nor 'b'

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08. Pressure gauges are never connected directly to the live steam line; rather a loop or syphon is interposed as close as possible to the pressure gauge. This is done to

     (A) Avoid the overheating of the tubes & bellows which operate them to minimise error and damage

     (B) Form a seal of water by steam condensate to fill the tube or bellows at the pressure being measured

     (C) Both 'a' & 'b'

     (D) Avoid the static head error introduced by steam entry

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09. Filler metal is not used in the __________ welding.

     (A) Seam

     (B) Electric spot

     (C) Projection

     (D) All a, b & c

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10. The pH value is the measure of hydrogen ion concentration in a solution. The term pH stands for the __________ in the solution.

     (A) Power of hydrogen ion concentration

     (B) Percentage of hydrogen ions

     (C) Presence of hydrogen ions

     (D) None of these

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11. An ‘orange peel’ effect is observed

     (A) As a defect during metal casting/ welding

     (B) During deep drawing of metallic sheet having large grain size

     (C) During faulty heat treatment of steel

     (D) During extrusion of metal through a die

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12. Eutectoid reaction for iron-carbon system occurs at a temperature of __________ °C.

     (A) 597

     (B) 959

     (C) 1147

     (D) 1493

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13. α-rays are

     (A) Negatively charged

     (B) Positively charged

     (C) Neutral

     (D) Same as X-rays

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14. Hard magnetic materials have high

     (A) Coercive force

     (B) Residual magnetic induction

     (C) Both 'a' and 'b'

     (D) Neither 'a' nor 'b'

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15. __________ are not emitted by radioactive substances.

     (A) α-rays

     (B) β-rays

     (C) Protons

     (D) Positrons

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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