chemistry(chemistry and industry 2) Quiz

Question Number 1 The thin layer called verdigris is NOT- A. is green in color B. is of copper C. is of aluminium D. it is a protective layer Question Number 2 One is used to produce deep blue color in glass- A. Ferrous compounds B. CrO2 C. NaOH D. CoO E. CO F. CO2 Question Number 3 One is TRUE about Iron in MILD IRON form- A. contains 0.6-1.5 % carbon B. is used to produce chain and springs C. is used to produce nuts and bolts D. is of less strength