Chemistry Gold dissolves in Acetic acid Aqua-regia Hydrochloric acid Nitric acid Acetic acid Aqua-regia Hydrochloric acid Nitric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Total number of elements in the Periodic table 112 127 115 118 112 127 115 118 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass of one Avogadro number of helium atom is 1.00 gram 4 x 6.02 x 1023 gram 4.00 gram 8.00 gram 1.00 gram 4 x 6.02 x 1023 gram 4.00 gram 8.00 gram ANSWER DOWNLOAD EXAMIANS APP
Chemistry In deep-sea diving, divers use a mixture of gases consisting of oxygen and Nitrogen Hydrogen Helium Argon Nitrogen Hydrogen Helium Argon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The first metal used by man was copper gold bronze iron copper gold bronze iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Submarines move under water. They have engines that run on Diesel Batteries Petrol and oxygen Steam Diesel Batteries Petrol and oxygen Steam ANSWER DOWNLOAD EXAMIANS APP