Chemistry Silicon is used in All of these Semiconductors Solar energy devices Transistors All of these Semiconductors Solar energy devices Transistors ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used for dating very old objects of archaeological importance? Carbon-14 Radium Phosphorus-31 Tritium Carbon-14 Radium Phosphorus-31 Tritium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Food cans are coated with tin and not with zinc because Zinc is less reactive than tin Zinc is costlier than tin Zinc has a higher melting point than tin Zinc is more reactive than tin Zinc is less reactive than tin Zinc is costlier than tin Zinc has a higher melting point than tin Zinc is more reactive than tin ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of these acids is not organic in origin? Citric acid Oxalic acid Lactic acid Sulphuric acid Citric acid Oxalic acid Lactic acid Sulphuric acid 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 Raman spectra Fluorescence Absorption spectra Emission spectra Raman spectra Fluorescence Absorption spectra Emission spectra ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used for refrigeration? Chlorine Sulphur dioxide Freon Phosphine Chlorine Sulphur dioxide Freon Phosphine ANSWER DOWNLOAD EXAMIANS APP
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