Chemistry Which mineral is the ore of aluminium ? Magnetite Haematite Bauxite Siderite Magnetite Haematite Bauxite Siderite ANSWER DOWNLOAD EXAMIANS APP
Chemistry When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in Emission spectra Fluorescence Raman spectra Absorption spectra Emission spectra Fluorescence Raman spectra Absorption spectra ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is the purest form of carbon Iron Graphite Coal Diamond Iron Graphite Coal Diamond ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who developed Hydrogen Bomb? Samuel Cohen J. Robert Oppen Heimer Wernher Von Braun Edward Teller Samuel Cohen J. Robert Oppen Heimer Wernher Von Braun Edward Teller ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals causes Itai-Itai disease ? Cobalt Cadmium Copper Chromium Cobalt Cadmium Copper Chromium ANSWER DOWNLOAD EXAMIANS APP
Chemistry What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ? There is a crackling sound The paper ignites There is no reaction. There is a violent explosion. There is a crackling sound The paper ignites There is no reaction. There is a violent explosion. ANSWER DOWNLOAD EXAMIANS APP