PCB MAKING AND CHEMICAL ETCHING PROCESS - Practice Mode

1) Which coating is tested by salt spray test?

Nickel coating Zinc coating Chromium coating Tin coating

Correct Answer: Zinc coating

2) Which quantity of electroplated metal coating is measured by BNF test?

Thickness Weight Size Base metal

Correct Answer: Thickness

3) Which corrosion resistance test is used to simulate the type of corrosion occur on Nickel chromium coating?

Calcium test Corrod kote test Salt spray test Sulphur-di-oxide test

Correct Answer: Corrod kote test

4) Which type of test is used to check the cadmium deposition?

Porosity test Salt spray test Hot water test Colour dipping test

Correct Answer: Porosity test

5) Which material is used for salt spary testing?

NaCl H2SO<sub>4</sub> Na<sub>2</sub>SO<sub>4</sub> NaCO<sub>3</sub>

Correct Answer: NaCl

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