Consider the following statements: I. Pine oil is used as antifoaming agent in the emulsion paints. II. Protective colloids are used in the emulsion paints to decrease their stability. III. Driers having oxidizable oils are added to the emulsion paints to accelerate drying process.

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I and III. Pine oil is a real antifoaming agent in emulsion paints. It stops excess foam from forming during mixing and application. So statement I is correct. Protective colloids are added to emulsion paints for the opposite reason. They keep pigment particles evenly dispersed and stop them from clumping together. This increases stability, it does not decrease it. So statement II is wrong. Driers are metal-based catalysts, such as cobalt or manganese compounds. They speed up the oxidation of oils in the paint binder. This makes the paint film dry and harden faster. So statement III is correct. Only statements I and III hold up. Option (d) is correct. So option (d) is correct.

Consider the following statements: I. Pine oil is used as antifoaming agent in the emulsion paints. II. Protective colloids are used in the emulsion paints to decrease their stability. III. Driers having oxidizable oils are added to the emulsion paints to accelerate drying process.

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