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MCQs

Total Questions : 3103 | Page 33 of 311 pages
Question 321. __________ is produced by the dehydrogenation of ethyl benzene.
  1.    Styrene
  2.    Ethyl alcohol
  3.    Cumene
  4.    Phenol
 Discuss Question
Answer: Option A. -> Styrene
Question 322. Fluorescent dyes are added in detergents to
  1.    Act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the whiteness appearance of white fabrics
  2.    Attain distinctiveness from other brands
  3.    Act as tarnish inhibitor for metals like German silver
  4.    None of these
 Discuss Question
Answer: Option A. -> Act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the whiteness appearance of white fabrics
Question 323. Alkylbenzene sulfonate (ABS) is a
  1.    Detergent
  2.    Rubber
  3.    Pesticide
  4.    Polyester
 Discuss Question
Answer: Option A. -> Detergent
Question 324. Wet chlorine gas produced during electrolysis of brine is dehydrated by
  1.    Spraying 66° Be H₂SO₄ counter current to the flow of the gas
  2.    Passing it through a bed of diatomaceous earth
  3.    Passing it through a bed of silica gel
  4.    None of these
 Discuss Question
Answer: Option A. -> Spraying 66° Be H₂SO₄ counter current to the flow of the gas
Question 325. The catalyst used in shift converter is
  1.    Nickel
  2.    Vanadium
  3.    Silica gel
  4.    Alumina
 Discuss Question
Answer: Option A. -> Nickel
Question 326. Zeigler process
  1.    Produces high density polyethylene
  2.    Produces low density polyethylene
  3.    Uses no catalyst
  4.    Employs very high pressure
 Discuss Question
Answer: Option A. -> Produces high density polyethylene
Question 327. Silicon carbide is a/an
  1.    Adhesive
  2.    Abrasive
  3.    Type of glass
  4.    Brittle material
 Discuss Question
Answer: Option B. -> Abrasive
Question 328. Silicone is a/an
  1.    Thermoplastic
  2.    Inorganic polymer
  3.    Monomer
  4.    None of these
 Discuss Question
Answer: Option B. -> Inorganic polymer
Question 329. Pig iron is produced by blast furnaces in India using mostly the iron ore named
  1.    Hematite
  2.    Magnetite
  3.    Siderite
  4.    Chalcopyrite
 Discuss Question
Answer: Option A. -> Hematite
Question 330. In multistage equilibrium conversion of SO₂ to SO₃ (2SO₂ + O₂ ⇋ 2SO₃), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO₂ to SO₃ can be increased by
  1.    Increasing the oxygen concentration
  2.    Putting more quantity of V₂O₅ catalyst in the converter
  3.    Removing some quantity of SO₃ during intermediate stage
  4.    Maintaining low temperature & pressure in the converter
 Discuss Question
Answer: Option C. -> Removing some quantity of SO₃ during intermediate stage

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