Raw Materials used in Chemical Industries Construction Questions - Set 30 - ObjectiveBooks

Raw Materials used in Chemical Industries Construction Questions - Set 30

Practice Test: Question Set - 30

1. Most suitable material of construction for the storage of concentrated nitric acid is
    (A) Cast iron
    (B) Monel
    (C) Karbate
    (D) Aluminium or chromium alloys (Cr > 18% for cold acid)

2. Which of the following stainless steels is non-magnetic?
    (A) Ferritic
    (B) Martenistic
    (C) Austenitic
    (D) None of these

3. Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C?
    (A) Monel
    (B) Stainless steel
    (C) Graphite
    (D) Kel-F and Teflon

4. Babbitt metal is not a
    (A) Tin base alloy
    (B) White metal
    (C) Lead base alloy
    (D) Pure metal

5. The formation of oxide film on a metal due to atmospheric exposure reduces its
    (A) Toughness
    (B) Stiffness
    (C) Creep limit
    (D) All (a), (b) & (c)

6. Nickel (76%) and chromium (15%) alloys are termed as
    (A) Inconel
    (B) Monel
    (C) Aluminium bronzes
    (D) Brass

7. An elastic behavior of materials is expressed in terms of
    (A) Hysteresis loop area
    (B) Stress-strain curve
    (C) Relaxation time
    (D) None of these

8. Wood metal is not used for making
    (A) Soft solder
    (B) Casting for dental work
    (C) Storage tank for storing brine and caustic soda
    (D) Fusible safety plug for pressure cooker

9. Fatigue strength of a material increases by
    (A) Having notches in the specimen
    (B) Rise in temperature
    (C) Under stressing the specimen
    (D) Having scratches on the surface

10. Valves in pipe size of 2" and under are normally made of
    (A) Wrought iron
    (B) Brass
    (C) Bronze
    (D) Monel

11. Pipes for bi-cycle frames are made of __________ steel.
    (A) Hot rolled
    (B) Chrome carbon
    (C) Cold rolled
    (D) Stainless

12. Platinum and silver are corroded by
    (A) Caustic soda solution
    (B) Phosphoric acid
    (C) Sulphuric acid (10%)
    (D) None of these

13. Wood is corroded by
    (A) Hydrochloric acid
    (B) SO2 (dry or wet)
    (C) Chlorine (dry or wet)
    (D) All (a), (b) and (c)

14. Pick out the wrong statement.
    (A) Bronze is an alloy of copper & tin
    (B) Brass is an alloy of copper & zinc
    (C) The alloy named 'German silver' does not contain any silver
    (D) The ability of a material to fracture without appreciable deformation is called its ductility

15. Locomotive boiler tubes are made of __________ alloys.
    (A) Arsenic copper
    (B) Magnesium
    (C) Aluminium
    (D) Nickel

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