Write down after discussing among youself, more examples of fast and slow phenomena.

Give two examples each of very fast and very slow reactions.

Write down the relation among velocity of electromagnetic waves, magnetic permeability of vacuum and electric permittivity of vacuum.

Write down any three-digit number (for example, 425). Examine why they work ? Make a six-digit number by repeating these digits in the same order (425425). Your new number is divisible by 7, 11, and 13.

Write down the conditions for geometrical isomerism. Give one example.

Write down the relation among the conductance and specific conductance of an electrolyte solution and the cell constant of the conductivity cell.

Write down the examples of Igneous, sedimentary and metamorphic rocks?

Write down the importance of biodiversity in maintaining ecosystem balance and climate control. Discuss the basics of In-situ and Ex-situ conservation.

Write down the name and formula of the stable paramagnetic allotrope among the allotropes of oxygen and sulphur.

Write down the relation between radius of the nucleus and mass number of an atom. What is isotone? Give an example.

Give an example of volume expansion of a liquid on heating. The area of a solid substance at a temperature of T_1K is A_1 sq m and that at a temperature of T_2K is A_2 sq m.Write down the mathematical expression for the coefficient of area expansion-with unit, of that solid substance.