A. Sulphuric acid (10%) at room temperature
B. Nitric acid (95%) at room temperature
C. Sulphur trioxide at 60°C
D. Any of these
Related Mcqs:
- Lead pipes are not safe for carrying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)2. Lead pipes are readily corroded by___________________?
A. Dilute HCl
B. Acetic acid
C. Concentrated H2SO4
D. None of these - Platinum and silver are corroded by___________________?
A. Caustic soda solution
B. Phosphoric acid
C. Sulphuric acid (10%)
D. None of these - Containers made of high silicon cast iron (14% Si) are not suitable for the storage of ____________________?
A. Acetic acid
B. Benzoic & boric acids
C. Phosphoric acid (95%) & sulphuric acid (95%)
D. Hydrochloric acid (concentrated) - Glass is corroded by________________?
A. Fluorine (dry or wet)
B. Sulphuric acid
C. Phosphoric acid
D. None of these - Teflon (PTFE) is corroded by_______________?
A. Hydrochloric acid (10%)
B. Hydrochloric acid (95%)
C. Sulphuric acid
D. None of these - Rubber lined vessels are corroded by the action of__________________?
A. Aqua regia
B. Chloroform
C. Sulphuric acid (95%)
D. All A., B. and C. - Tin vessels are corroded by____________________?
A. Anhydrous ammonia
B. Aromatic solvents
C. Synthetic detergent solution
D. None of these - Graphite is corroded by_________________?
A. Sulphuric acid (10%)
B. Sea water
C. Hydrochloric acid
D. None of these - Gunmetal and bronze are not corroded by the action of__________________?
A. Wet chlorine
B. Synthetic detergent solution
C. Hydrochloric acid (10%)
D. Nitric acid (< 25%) - Wood is corroded by__________________?
A. Hydrochloric acid
B. SO2 (dry or wet)
C. Chlorine (dry or wet)
D. All A., B. and C.
