Teflon (PTFE) is corroded by_______________?

Related Mcqs:

1. Glass is corroded by________________?

   A. Fluorine (dry or wet) B. Sulphuric acid C. Phosphoric acid D. None of these...

2. 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...

3. Polythene (low or high density) containers are not corroded by___________________?

   A. Sulphuric acid (10%) at room temperature B. Nitric acid (95%) at room temperature C. Sulphur trioxide at 60°C D. Any of these...

4. Rubber lined vessels are corroded by the action of__________________?

   A. Aqua regia B. Chloroform C. Sulphuric acid (95%) D. All A., B. and C....

5. 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 HCI B. Acetic acid C. Concentrated H2SO4 D. None of these...

6. Tin vessels are corroded by____________________?

   A. Anhydrous ammonia B. Aromatic solvents C. Synthetic detergent solution D. None of these...

7. Platinum and silver are corroded by___________________?

   A. Caustic soda solution B. Phosphoric acid C. Sulphuric acid (10%) D. None of these...

8. Graphite is corroded by_________________?

   A. Sulphuric acid (10%) B. Sea water C. Hydrochloric acid D. None of these...

9. 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%)...

10. Wood is corroded by__________________?

    A. Hydrochloric acid B. SO2 (dry or wet) C. Chlorine (dry or wet) D. All A., B. and C....