Chemical Engineering Basics for Interview - Set 08 - ObjectiveBooks

Chemical Engineering Basics for Interview - Set 08

Practice Test: Question Set - 08

1. Which of the following is not a characteristic observed in material failure by fatigue fracture?
    (A) Plastic deformation of material does not occur
    (B) Initiation of crack from below the surface does not occur
    (C) Initiation of crack occurs on the surface of the machine part
    (D) Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface

2. Propulsion of rocket follows from the
    (A) Newton's second law of motion
    (B) Newton's third law of motion
    (C) Law of projectiles
    (D) Archimedes principle

3. Leakage in a cooking gas cylinder is detected by
    (A) Radio-isotopes
    (B) Pouring soap solution on the surface and locating the gas bubbles
    (C) Halide torch
    (D) Pungent smell of mercaptans present in the gas

4. Which of the following is an example of cathodic protection of metals against corrosion?
    (A) Painted steel
    (B) Galvanized iron
    (C) Case hardened steel
    (D) Lead lined reactor

5. Out of the following, the alloy which has equal percentage of constituents, is
    (A) White metal
    (B) Gun metal
    (C) Duralumin
    (D) Constantan

6. With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.
    (A) Supercharging
    (B) Wall temperature
    (C) Compression ratio
    (D) Engine speed

7. The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.
    (A) Flow output
    (B) Head developed
    (C) Overall efficiency
    (D) Weight

8. A psychrometer does not measure the _________ temperature of moist air.
    (A) Dew point
    (B) Dry bulb
    (C) Wet bulb
    (D) None of these

9. Alloying elements present in Haynes stellite, which has superior performance than high speed steel, are:
    (A) Nickel, cobalt & chromium
    (B) Tungsten, chromium & cobalt
    (C) Manganese, chromium & cobalt
    (D) Tungsten, molybdenum & nickel

10. An atom bomb works on the principle of
    (A) Nuclear fission
    (B) Nuclear fusion
    (C) Both the nuclear fission & fusion
    (D) Ionization

11. Young's modulus of a material is the measure of its
    (A) Stiffness
    (B) Malleability
    (C) Creep resistance
    (D) Tensile strength

12. Neutrons are present in all atoms except that of
    (A) He
    (B) C
    (C) H
    (D) Ar

13. Which of the following is not categorized as the ore agglomeration process?
    (A) Nodulising
    (B) Pelletising
    (C) Balling
    (D) Briquetting

14. Principal alloying element in Elinvar (used for making hair springs for watches) is
    (A) Copper
    (B) Aluminium
    (C) Nickel
    (D) Zinc

15. In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, Vg = velocity gradient).
    (A) V2
    (B) 1/V2
    (C) 1/Vg
    (D) Vg

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