Author Archives: Arjun Dhamala

I asked Mrs. Rai, how much do you spend for this Tyson ?  She answered me ‘I spend as much as my son does’. It means every rich called family spends for one more  individual. They are domesticated any one species of lazy dog for their hobbies. According to mrs. Rai one  rich family spendsContinue reading “Where is huminity?”

The elements of group O of the periodic table are collectively called noble gases or inert gases. The group O include the elements helium, neon, argon, krypton, xenon and radon. except radon all the noble gases occurs in the atmosphere in very small quantity as monoatomic molecules. They occupies about 1% by volume of air.

A catalyst is a chemical substance which increases or decreases the rate of chemical reaction out itself remaining chemically unchanged . There are two types of catalyst,they are: i) positive catalyst: A catalyst which increases the rate of chemical reaction is called a positive catalyst. For eg. manganese dioxide (MnO2), Iron powder(Fe) ii) Negative catalyst:Continue reading “What is catalyst?”

The amount of substance which contains 6.023×10^23 atoms, ions, molecules or particle is called one mole.