A. Least
B. Not
C. Mildly
D. Highly
Related Mcqs:
- Hydrochloric acid is stored in a ________________vessel?
A. Lead lined steel
B. Rubber lined steel
C. Stainless steel
D. Cast iron - Hydrochloric acid absorber in made of___________________?
A. Cast iron
B. Mild steel
C. Karbate
D. Stainless steel - Hydrochloric acid is stored in a _____________ steel vessel?
A. Lead lined
B. Rubber lined
C. Glass lined
D. Stainless - Which of the following constituents of cast iron is mainly responsible for imparting it an anti-corrosive property ?
A. Silicon
B. Phosphorus
C. Sulphur
D. None of these - Silicone rubber is not resistant to the corrosive action of____________________?
A. Sulphuric acid (10%)
B. Sulphuric acid (95%)
C. Ether
D. Both B. and C. - H2SO4 (< 50% concentration) is corrosive to_________________?
A. Aluminium, mild steel, stainless steel, concrete & tin
B. Copper, cast iron & high silicon iron (14% Si)
C. Rubber (butyl and hard), silicone rubber & Teflon
D. Glass, graphite, porcelain & stoneware - The crystal structure of most of the common metals is_____________________?
A. Orthorhombic
B. Cubic
C. Hexagonal
D. None of these - Most of the common metals have ______________ crystal structure?
A. Cubic
B. Hexagonal
C. Orthorhombic
D. None of these - Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with______________?
A. Acidic refractory
B. Rubber
C. Karbate
D. Lead or acid proof bricks - In the Contact process of sulphuric acid manufacture, 98% acid cooler is made of_____________________?
A. Stainless steel
B. Cast iron
C. Lead lined steel
D. Rubber lined steel
