Colouring techniques MCQ with Answers

46) Which main equipment is required for metallizing?

Answer is:

Metal spray gun

47) How should be the metallized surface?

Answer is:

Sealed or paint

48) Which is the purpose of measuring pH value of solution?

Answer is:

Acidity and Alkalinity

Explanation:

The pH scale ranges from 0 to 14, with 7 being neutral. pHs less than 7 are acidic while pHs greater than 7 are alkaline (basic). A pH meter is an instrument used to measure acidity or alkalinity of a solution - also know as pH.

Which is the purpose of measuring pH value of solution?

49) Which method is used for determination of pH?

Answer is:

Colourmetric method and Electrometric methods

50) Which factor the quality of coating mainly depends on?

Answer is:

Adhesion to the base metal

Explanation:

Quality of coating mainly depends on Adhesion to the base metal.