Basics for Chemical Engineering Questions & Answers - Set 17

Practice Test: Question Set - 17

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1. Which of the following is not an ore of copper?

(A) Cryolite

(B) Azurite

(C) Chalcopyrite

(D) Malachite

Answer: Option A

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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

Answer: Option B

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3. Dislocations are __________ defects.

(A) Point

(B) Line

(C) Volume

(D) None of these

Answer: Option B

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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

Answer: Option A

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5. M₁₀ index of coke indicates its

(A) Compressive strength

(B) Hardness

(C) Abrasion resistance

(D) Impact strength

Answer: Option C

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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

Answer: Option A

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7. Addition of __________ to steel does not impart hardness.

(A) Nickel

(B) Copper

(C) Chromium

(D) Silicon

Answer: Option B

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8. The same volume of all gases is representative of their

(A) Specific gravities

(B) Densities

(C) Gas characteristic constants

(D) Molecular weights

Answer: Option D

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9. Which of the following is an acidic constituent of B.F. slag?

(A) SiO₂

(B) FeO

(C) MgO

(D) CaO

Answer: Option A

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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)/ε₁.ε₂

(B) ε₁.ε₂/(ε₁ + ε₂ - ε₁.ε₂)

(C) ε₁.ε₂

(D) ε₁ + ε₂

Answer: Option B

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11. Larger length & diameter water pipes are made by

(A) Electrical resistance welding

(B) Die casting

(C) Semi-centrifugal casting

(D) Continuous casting

Answer: Option C

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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

Answer: Option C

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13. Eutectoid composition of carbon steel at room temperature is

(A) Cementite

(B) Pearlite

(C) Martensite

(D) Ferrite

Answer: Option B

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14. Which of the following is an unconventional source of energy?

(A) Thermal power

(B) Hydroelectric power

(C) Nuclear-fusion power

(D) Solar power

Answer: Option D

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15. The refrigerant freon-12 is chemically

(A) CCl₂F₂

(B) CCl₃F

(C) CClF₃

(D) CCl₄F

Answer: Option A

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View All Answers

01. Answer: Option A 02. Answer: Option B 03. Answer: Option B 04. Answer: Option A 05. Answer: Option C 06. Answer: Option A 07. Answer: Option B 08. Answer: Option D 09. Answer: Option A 10. Answer: Option B 11. Answer: Option C 12. Answer: Option C 13. Answer: Option B 14. Answer: Option D 15. Answer: Option A

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