Chemical Engineering Mcqs

Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is ______________ °C?

• (A)  25
• (B)  60-70
• (C)  150-200
• (D)  250-300

Answer

Submitted By :Ali Uppal

Function of sodium thiosulphate (hypo) in development of photographic film/plate is to______________?

• (A)  Brighten the faint images
• (B)  Remove metallic silver
• (C)  Convert silver chloride to silver
• (D)  Remove unexposed silver halide

Answer

Submitted By :Ali Uppal

Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and___________________?

• (A)  Sulphuric acid
• (B)  Phosphoric acid
• (C)  Hydrochloric acid
• (D)  Hydrofluoric acid

Answer

Submitted By :Ali Uppal

Neoprene is chemically known as___________________?

• (A)  Polybutadiene
• (B)  Styrene butadiene rubber (SBR)
• (C)  Polyurethane
• (D)  Polychlorophrene

Answer

Submitted By :Ali Uppal

Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of_________________?

• (A)  Carbon
• (B)  Arsenic
• (C)  Lead
• (D)  Sulphur

Answer

Submitted By :Ali Uppal

Fermentator temperature during production of alcohol from molasses is around ______________ °C?

• (A)  5
• (B)  30
• (C)  130
• (D)  300

Answer

Submitted By :Ali Uppal

Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda ?

• (A)  Diaphragm electrolytic cell process
• (B)  Mercury electrolytic cell process
• (C)  Lime-soda process
• (D)  None of these

Answer

Submitted By :Ali Uppal

Raw materials used for producing ________________ cement does not contain iron oxide?

• (A)  Waterproof
• (B)  Slag
• (C)  White
• (D)  Pozzolan

Answer

Submitted By :Ali Uppal

Alum [Al2(SO4)3] is used as a coagulant in water treatment to remove____________________?

• (A)  Colour
• (B)  Turbidity
• (C)  Bacteria
• (D)  All A ,

Answer

Submitted By :Ali Uppal

Alcohol is produced by the___________________?

• (A)  Oxidation of an aldehyde
• (B)  Hydrolysis of an ether
• (C)  Esterification of a fat
• (D)  None of these

Answer

Submitted By :Ali Uppal