Basics for Chemical Engineering Questions & Answers - Set 17 - ObjectiveBooks

Basics for Chemical Engineering Questions & Answers - Set 17

Practice Test: Question Set - 17

1. Which of the following is not an ore of copper?
    (A) Cryolite
    (B) Azurite
    (C) Chalcopyrite
    (D) Malachite

2. The surface tension of a liquid, at critical temperature is
    (A) Indeterminate
    (B) Zero
    (C) Infinity
    (D) Same as that at any other temperature

3. Dislocations are __________ defects.
    (A) Point
    (B) Line
    (C) Volume
    (D) None of these

4. 'Amortization' in respect of financial obligation of a company means the
    (A) Liquidation of financial obligations on instalment basis
    (B) Commitment of financial obligation on priority
    (C) Liquidation of all the obsolete equipments of the company
    (D) Modernisation of the plant equipments

5. M10 index of coke indicates its
    (A) Compressive strength
    (B) Hardness
    (C) Abrasion resistance
    (D) Impact strength

6. The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the __________ of the slag.
    (A) Fluidity
    (B) Basicity
    (C) Acidity
    (D) Viscosity

7. Addition of __________ to steel does not impart hardness.
    (A) Nickel
    (B) Copper
    (C) Chromium
    (D) Silicon

8. The same volume of all gases is representative of their
    (A) Specific gravities
    (B) Densities
    (C) Gas characteristic constants
    (D) Molecular weights

9. Which of the following is an acidic constituent of B.F. slag?
    (A) SiO2
    (B) FeO
    (C) MgO
    (D) CaO

10. For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by
    (A) (ε1 + ε2)/ε12
    (B) ε12/(ε1 + ε2 - ε12)
    (C) ε12
    (D) ε1 + ε2

11. Larger length & diameter water pipes are made by
    (A) Electrical resistance welding
    (B) Die casting
    (C) Semi-centrifugal casting
    (D) Continuous casting

12. Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of
    (A) Paper
    (B) Cloth
    (C) Lead
    (D) Aluminium

13. Eutectoid composition of carbon steel at room temperature is
    (A) Cementite
    (B) Pearlite
    (C) Martensite
    (D) Ferrite

14. Which of the following is an unconventional source of energy?
    (A) Thermal power
    (B) Hydroelectric power
    (C) Nuclear-fusion power
    (D) Solar power

15. The refrigerant freon-12 is chemically
    (A) CCl2F2
    (B) CCl3F
    (C) CClF3
    (D) CCl4F

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