Chemical Engineering MCQs [Quiz 23]

Q1. __________ has a negative co-efficient of linear expansion.
(A) Iron
(B) Copper
(C) Rubber
(D) Nickel

Q2. Thermal efficiency of an internal combustion engine is around __________ percent.
(A) 8
(B) 35
(C) 65
(D) 80

Q3. Maximum permissible sulphur content in steel is __________ percent.
(A) 0.015
(B) 0.055
(C) 0.505
(D) 0.805

Q4. Hydrogen in liquid steels is dissolved
(A) As tiny gas bubbles
(B) In the atomic form
(C) In the ionic form
(D) In the molecular form

Q5. A spring material should have low
(A) Elastic limit
(B) Deflection value
(C) Fatigue resistance
(D) None of these

Q6. Nickel and __________ are the alloying element added in steel to increase its toughness.
(A) Molybdenum
(B) Chromium
(C) Vanadium
(D) Silicon

Q7. A common disinfectant used in village wells for disinfection of water is
(A) Free chlorine
(B) Bromine
(C) Iodine
(D) Potassium permanganate

Q8. The lightest non-inflammable gas is
(A) H2
(B) He
(C) Ar
(D) O2

Q9. Which of the following is not an ore of copper?
(A) Cryolite
(B) Azurite
(C) Chalcopyrite
(D) Malachite

Q10. The surface tension of a liquid, at critical temperature is
(A) Indeterminate
(B) Zero
(C) Infinity
(D) Same as that at any other temperature

Updated: 22nd July 2019 — 8:41 PM

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