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

Related Mcqs:

1. 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...

2. Platinum and silver are corroded by___________________?

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

3. 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)...

4. Glass is corroded by________________?

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

5. Teflon (PTFE) is corroded by_______________?

   A. Hydrochloric acid (10%) B. Hydrochloric acid (95%) C. Sulphuric acid D. None of these...

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

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

7. Tin vessels are corroded by____________________?

   A. Anhydrous ammonia B. Aromatic solvents C. Synthetic detergent solution 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....