Chemical Engineering Mcqs

Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo ?

• (A)  Depithing
• (B)  Digestion
• (C)  Bleaching
• (D)  None of these

Answer

Submitted By :Ali Uppal

____________ are used as corrosion inhibitor for iron & steel in aqueous solutions ?

• (A)  Phosphates
• (B)  Chromates
• (C)  Sulphates
• (D)  Bi-carbonates

Answer

Submitted By :Ali Uppal

Fusion of bauxite and ________________ produces high alumina cement?

• (A)  Alum
• (B)  Limestone
• (C)  Coke
• (D)  Quartz

Answer

Submitted By :Ali Uppal

The basic constituent of vegetable oils is ___________________?

• (A)  Triglyceride
• (B)  Fatty acids
• (C)  Fatty alcohol
• (D)  Mono esters

Answer

Submitted By :Ali Uppal

In sulphate pulp manufacture, the pressure and temperature in the digestor is____________________?

• (A)  10 atm., 800 °C
• (B)  10 atm., 170-180°C
• (C)  1 atm., 170 – 180°C
• (D)  1 atm., 800°C

Answer

Submitted By :Ali Uppal

Glass is__________________?

• (A)  Mainly CaO
• (B)  Subjected to galvanising
• (C)  A super cooled liquid
• (D)  All A ,

Answer

Submitted By :Ali Uppal

Sulphur addition in soap is done to _____________________?

• (A)  Improve the soap texture
• (B)  Cure pimples & dandruff
• (C)  Fasten lather formation
• (D)  Increase its cleansing action

Answer

Submitted By :Ali Uppal

Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction ?

• (A)  Oxidation of Na+ ions
• (B)  Oxidation of Cl- ions
• (C)  Reduction of Na+ ions
• (D)  Reduction of Cl- ions

Answer

Submitted By :Ali Uppal

Esterification reaction produces _________________?

• (A)  Detergent
• (B)  Vanaspati
• (C)  Soap
• (D)  Mercaptans

Answer

Submitted By :Ali Uppal

Haemoglobin is a/an____________________?

• (A)  Amino acid
• (B)  Biological catalyst
• (C)  Protein
• (D)  Enzyme

Answer

Submitted By :Ali Uppal