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MCQs

Total Questions : 3103 | Page 308 of 311 pages
Question 3071. Phthalic anhydride is made by the ______________________?
  1.    Oxidation of naphthalene
  2.    Oxidation of benzene
  3.    Dehydrogenation of ethyl benzene
  4.    None of these
 Discuss Question
Answer: Option A. -> Oxidation of naphthalene
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3072. Dehydrogenation of Isopropanol produces ____________________?
  1.    Propyl alcohol
  2.    Acetone
  3.    Trichloroethylene
  4.    Formaldehyde
 Discuss Question
Answer: Option B. -> Acetone
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3073. Oil produced by solvent extraction________________?
  1.    Has low free fatty acid content
  2.    Is odourless
  3.    Both A. & B.
  4.    Neither A. nor B.
 Discuss Question
Answer: Option D. -> Neither A. nor B.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3074. Which of the following is a constituent of vinegar ?
  1.    Around 10% alcohol
  2.    Around 1% acetic acid
  3.    Both A. and B.
  4.    Neither A. nor B.
 Discuss Question
Answer: Option C. -> Both A. and B.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3075. ‘Hollander beater’ machine used in the paper manufacturing plant does not accomplish the task of____________________?
  1.    Final rolling out of paper
  2.    Cutting of fibres
  3.    Hydration of fibres
  4.    Fibrillation of fibre
 Discuss Question
Answer: Option A. -> Final rolling out of paper
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3076. Synthetic glycerine is produced from___________________?
  1.    Toluene
  2.    Phenol
  3.    Propylene
  4.    Naphthalene
 Discuss Question
Answer: Option C. -> Propylene
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3077. Cement setting under water employs a/an _______________ process ?
  1.    Hydration
  2.    Decomposition
  3.    Oxidation
  4.    Reduction
 Discuss Question
Answer: Option A. -> Hydration
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3078. Oxygen is produced by fractionation of air using _____________ process?
  1.    Linde’s
  2.    Claude’s
  3.    Either A. or B.
  4.    None of these
 Discuss Question
Answer: Option C. -> Either A. or B.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3079. Hydrogenation of vegetable oils is a/an _______________ reaction ?
  1.    Endothermic
  2.    Autocatalytic
  3.    Exothermic
  4.    Homogenous
 Discuss Question
Answer: Option C. -> Exothermic
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3080. Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the _____________ process?
  1.    Mechanical
  2.    Sulphate/Kraft
  3.    Sulphite
  4.    Neutral sulphite semi-chemical
 Discuss Question
Answer: Option D. -> Neutral sulphite semi-chemical
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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