Chemistry When iron rusts, its weight First increases and then decreases Remains the same Increases Decreases First increases and then decreases Remains the same Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Chemistry When there are two electrons in the same orbital, they have: Same or opposite spin No spin Opposite spin Same spin Same or opposite spin No spin Opposite spin Same spin ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas that usually causes explosions in coal mines is Carbon monoxide Methane Air Hydrogen Carbon monoxide Methane Air Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the covalency of nitrogen in ammonia molecule 5 3 4 2 5 3 4 2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a natural source of hydrocarbon? Natural Gas Coal Petroleum Mica Natural Gas Coal Petroleum Mica ANSWER DOWNLOAD EXAMIANS APP
Chemistry The depletion of ozone layer is due to Chloro fluoro carbon Carbon dioxide Ethane Sulphur dioxide Chloro fluoro carbon Carbon dioxide Ethane Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS