Chemical Engineering Objective type Questions and Answers pdf - Set 42 - ObjectiveBooks

Chemical Engineering Objective type Questions and Answers pdf - Set 42

Practice Test: Question Set - 42

1. Highest cutting speed is achieved by the __________ tool material.
    (A) High speed steel
    (B) Carbide
    (C) Cast alloy
    (D) Plain carbon steel

2. A fluid is termed as the Newtonian fluid, when the shear stress is __________ the velocity gradient.
    (A) Independent of
    (B) Inversely proportional to
    (C) Directly proportional to
    (D) None of these

3. Adhesives
    (A) Can’t be used in the form of pressure sensitive tapes
    (B) Can’t join two dissimilar metals
    (C) Cure instantaneously after application on a surface
    (D) None of these

4. Earing is a defect found in steels after the following metal working operation.
    (A) Extrusion
    (B) Rolling
    (C) Deep drawing
    (D) Wire drawing

5. All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in which neutron is absent.
    (A) Deuterium
    (B) Hydrogen
    (C) Neon
    (D) Helium

6. Routing in production, planning & control is concerned with the
    (A) Sequence of operation to be performed
    (B) Progress of work performed
    (C) Authorization of work to be performed
    (D) Balancing of load on machines

7. Magnesium is present in
    (A) Haemoglobin
    (B) Chlorophyll
    (C) Hypo solution
    (D) None of these

8. Oxyacetylene reducing flame is used while carrying out welding on
    (A) Alloy steel
    (B) Grey cast iron
    (C) Mild steel
    (D) High carbon steel

9. Steel & cast iron pipes are produced by __________ casting.
    (A) Slush
    (B) Die
    (C) Investment
    (D) True centrifugal

10. While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C.
    (A) 1800
    (B) 2000
    (C) 2400
    (D) 3000

11. Pipelines carrying various utilities in chemical industries are identified by their color codes. The color of pipeline carrying steam is
    (A) Black
    (B) Silver grey
    (C) Green
    (D) Yellow

12. Pick out the wrong statement.
    (A) Lead can creep under its own weight at room temperature
    (B) The electrical conductivity of gold is considerably reduced by alloying additions due to the decrease in electron movement
    (C) Recrystallisation temperature decreases with decrease in strain in a cold worked metal
    (D) With increase in temperature, the electrical conductivity of intrinsic semi-conductor will increase

13. Out of the following, the most malleable material is
    (A) Copper
    (B) Aluminium
    (C) Wrought iron
    (D) Lead

14. The 'transition temperature' for ductile to brittle behavior of steel increases with increase in the __________ content in steel.
    (A) Carbon
    (B) Manganese
    (C) Both 'a' nor 'b'
    (D) Neither 'a' nor 'b'

15. Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal
    (A) Tensile strength
    (B) Compressive strength
    (C) Young's modulus
    (D) Thermal co-efficient of expansion

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