Chemical Engineering Mcqs

Paper grade bamboo contains about _______________ percent cellulose ?

• (A)  5
• (B)  20
• (C)  40
• (D)  60

Answer

Submitted By :Ali Uppal

Cement setting under water employs a/an _______________ process ?

• (A)  Hydration
• (B)  Decomposition
• (C)  Oxidation
• (D)  Reduction

Answer

Submitted By :Ali Uppal

Hydrogenation of vegetable oils is a/an _______________ reaction ?

• (A)  Endothermic
• (B)  Autocatalytic
• (C)  Exothermic
• (D)  Homogenous

Answer

Submitted By :Ali Uppal

Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the _____________ process?

• (A)  Mechanical
• (B)  Sulphate/Kraft
• (C)  Sulphite
• (D)  Neutral sulphite semi-chemical

Answer

Submitted By :Ali Uppal

Synthetic glycerine is produced from___________________?

• (A)  Toluene
• (B)  Phenol
• (C)  Propylene
• (D)  Naphthalene

Answer

Submitted By :Ali Uppal

‘Hollander beater’ machine used in the paper manufacturing plant does not accomplish the task of____________________?

• (A)  Final rolling out of paper
• (B)  Cutting of fibres
• (C)  Hydration of fibres
• (D)  Fibrillation of fibre

Answer

Submitted By :Ali Uppal

Glycerine can be obtained from ________________ ?

• (A)  Fat
• (B)  Naphthalene
• (C)  Cumene
• (D)  Sucrose

Answer

Submitted By :Ali Uppal

Permanent hardness of water is due to the presence of calcium & magnesium __________________?

• (A)  Bi-carbonates
• (B)  Sulphates & chlorides
• (C)  Carbonate
• (D)  None of these

Answer

Submitted By :Ali Uppal

Deaeration of water in its treatment is necessary, as it___________________?

• (A)  Minimises its turbidity
• (B)  Helps in controlling its taste and odour
• (C)  Minimises its corrosiveness
• (D)  None of these

Answer

Submitted By :Ali Uppal

Use of water having dissolved oxygen in boilers promotes___________________?

• (A)  Corrosion
• (B)  Sequestration
• (C)  Scale formation
• (D)  None of these

Answer

Submitted By :Ali Uppal