Chemistry The material used in the manufacture of lead pencil is Mica Graphite Carbon Lead Mica Graphite Carbon Lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is nitrogen carbon hydrogen oxygen nitrogen carbon hydrogen oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Magnetite is Fe3O4 2Fe2O3. 3H2O FeCO3 Fe2O3 Fe3O4 2Fe2O3. 3H2O FeCO3 Fe2O3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silicon is used in Solar energy devices All of these Semiconductors Transistors Solar energy devices All of these Semiconductors Transistors ANSWER DOWNLOAD EXAMIANS APP
Chemistry All isotopes of the same element have ________ Different atomic numbers and the same atomic mass The same atomic number but different atomic masses The same atomic number and the atomic mass Different atomic numbers and different atomic mass Different atomic numbers and the same atomic mass The same atomic number but different atomic masses The same atomic number and the atomic mass Different atomic numbers and different atomic mass ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas which turns into liquid at the lowest temperature among the following is Hydrogen Oxygen Helium Nitrogen Hydrogen Oxygen Helium Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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