Chemistry Heating of a ore below its melting point in the absence of air is known as Smelting Calcination Refining Roasting Smelting Calcination Refining Roasting ANSWER DOWNLOAD EXAMIANS APP
Chemistry The total energy of revolving electron in an atom Can never be positive Cannot be negative Can have any value above zero Will always be positive Can never be positive Cannot be negative Can have any value above zero Will always be positive ANSWER DOWNLOAD EXAMIANS APP
Chemistry The laws of electrolysis are given by Lewis Ostwald Faraday Arrhenius Lewis Ostwald Faraday Arrhenius ANSWER DOWNLOAD EXAMIANS APP
Chemistry Gunpowder consits of a mixture of TNT and charcoal Nitre, sulphur and charcoal Sand and TNT Sulphur, sand and charcoal TNT and charcoal Nitre, sulphur and charcoal Sand and TNT Sulphur, sand and charcoal ANSWER DOWNLOAD EXAMIANS APP
Chemistry A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? From brown to orange-red From pink to blue-green From brown to blue-black From blue to pink From brown to orange-red From pink to blue-green From brown to blue-black From blue to pink ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atoms having the same number of protons but different number of neutrons are called : Isotopes Cations Anions Higgs-boson Isotopes Cations Anions Higgs-boson ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS