Pick out the wrong statement about coating/electroplating of metals ?

A. Phosphate coating is used as an excellent base for paints & enamels
B. Phosphate coating is less corrosion resistant than chromate coating
C. The base metal to be electroplated is normally made the cathode of the electrolytic cell and
coating metal is made the anode
D. Calorising is the process of coating steel with chromium

Pick out the wrong statement ?

A. A ferromagnetic material becomes paramagnetic above the ‘Curie temperature’
B. Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic
materials
C. Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and
coercive forces
D. Tungsten steel and alnico are not hard magnetic materials

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