What is self diffusion ?
Answer:- The phenomenon of self diffusion is due to the transport of mass from a region of higher concentration to a region of lower concentration to bring about an equilibrium.
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Buckminster fullerene.
Answer:- In 1985, it was found that action of laser beams on graphite produced a spherical molecule made of 60 carbon atoms covalently bonded together.It is now called Buckminster fullerene.It is named after the American architect Buckminster fuller, who designed domed structures with the same geometry.
What is Jacobian ?
Answer:- A determinant which is defined for a finite number of functions of the same number of variables and in which each row consists of the first partial derivatives of the same function with respect to each of the variables is called Jacobian. e.g Jacobian of (u,v)/(x,y) is
Adiabatic process.
Answer:- An adiabatic process is one in which there is no exchange of heat between system and surroundings i.e in adiabatic process,the total heat of system remains constant.
Isothermal process.
Answer:- The process in which temperature remains constant is called the isothermal process. In an isothermal process, there is no change in internal kinetic energy of the system.
S-block element.
Answer:- Those elements (except He) in which last electron enters into the s-subshell of the outermost main energy level, are called S-block element.
Why is electric flux so named ?
Answer:- Flux is a ward which is used in connection with something flowing across any cross-section, such as flux of air or flux of water.In case of electric field, electric lines of force can be imagined to be flowing across the given surface.Hence the name electric flux.