a)Chemical method: – Colloidal solution can be prepared by chemical reaction leading to formation of molecules by double decomposition, oxidation, reduction or hydrolysis. These molecules then aggregate leading to form sols. b)Electrical disintegration or Bredig’s Arc Method: – Here Dispersion …
The process used for reducing the amount of impurities to a requisite minimum is known as purification of colloidal solution and it is carried out by following methods (I) Dialysis: – It is a process of removing a dissolved substance from a …
(I) Colligative Properties: – The values of colligative properties (osmotic pressure, lowering in vapor pressure, depression in freezing point, elevation in boiling point) are of small order as compared to values shown by true solution at same concentration. (II) Tyndall effect: – …
Kinetic energy is the energy of motion. An object that has motion – whether it is vertical or horizontal motion – has kinetic energy. There are many forms of kinetic energy – vibrational (the energy due to vibrational motion), rotational (the …
If an object moves relative to a reference frame—for example, if a bus moves in the forward direction relative to the road, or a passenger moves toward the driver of a bus—then the object’s position changes. This change in position …
The basic definition of Optics is to study the properties of light and it’s propagation through different media and its effects. Ray optics and Optical instruments is a one of important and interesting concept in CBSE Class 12 Physics. Reflection …
Semiconductor Electronics is one of the concepts of physics in CBSE Class 12. Before knowing about semiconductors on should know what materials are. In terms of electricity, there are two types of Materials namely, Conductors and non-conductors. Conductors will conduct …
Atoms are building blocks of matter which consists of Protons, neutrons, and Electrons. Protons and neutrons are in one region that is called as nucleus but an electron revolves around the nucleus in fixed orbits. The best example is watermelon …
