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.
Which of the statements given above is/are correct?
I and III
To determine the correct statements regarding the use of different substances in emulsion paints, let's evaluate each statement individually:
- Statement I: Pine oil is used as antifoaming agent in the emulsion paints.
Pine oil is indeed used as an antifoaming agent in emulsion paints. It helps to reduce the formation of foam during the mixing and application of paints. Therefore, this statement is correct.
- Statement II: Protective colloids are used in the emulsion paints to decrease their stability.
Protective colloids are actually used to enhance the stability of emulsion paints, not to decrease it. They help in maintaining the dispersion of solid particles in the liquid, preventing coagulation or settling. Hence, this statement is incorrect.
- Statement III: Driers having oxidizable oils are added to the emulsion paints to accelerate drying process.
Driers, which are often metallic soaps, are indeed added to paints to accelerate the drying process. They work by catalyzing the oxidation of oil components in the paint, thus promoting faster drying. This statement is correct.
Based on the above evaluations:
- Statement I is correct as pine oil is used as an antifoaming agent.
- Statement II is incorrect; protective colloids increase stability, not decrease it.
- Statement III is correct; driers with oxidizable oils are used to speed up drying.
Therefore, the correct statements are I and III.
Correct Answer: I and III
Similar Questions
- Which one of the following type of medicines is used for treating indiges-tion?
- Which one of the following is con-sidered to be the purest source of water?
Among the following, which is not the correct method for keeping the curd?
Browning of the chopped apple can be minimized by :
Which one of the following alloys contains a non-metal as one of its constituent?
Galvanization is a method of protecting iron from rusting by coating with a thin layer of
Buckminster fullerene, which looks like a football, is an allotropic form of
Kerosene and petrol mixture can be best separated by
Which one of the following metals can be extracted using carbon as reducing agent?
Which one of the following metals is most commonly used for making filament of incandescent electric bulbs?
Important Questions from Chemistry in Everyday Life
The plastics which get deformed easily on heating are known as:
CNG stands for which among the following?
Milk becomes sour if kept outside the refrigerator in summer because of:
Which of the following is a ferrous mineral?
Which among the following methods do most Indian households use for obtaining safe drinking water?
