Chemistry Which one of the following elements is used in the manufacture of safety matches? Silicon Graphite Phosphorus Sodium Silicon Graphite Phosphorus Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Where does the oxygen that keeps us alive come from? Oxides of minerals Water Carbon dioxide Carbonates absorbed from soil Oxides of minerals Water Carbon dioxide Carbonates absorbed from soil ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following gases has the highest calorific value? Coal gas Natural gas Indane gas Water gas Coal gas Natural gas Indane gas Water gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry Slag is a name given for Molten iron Molten sand Molten calcium silicate Molten alumina Molten iron Molten sand Molten calcium silicate Molten alumina ANSWER DOWNLOAD EXAMIANS APP
Chemistry Phosphorus is kept in water because Its ignition temperature is very low Its ignition temperature is very high Its critical temperature is high Its critical temperature is low Its ignition temperature is very low Its ignition temperature is very high Its critical temperature is high Its critical temperature is low ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compound that has the least value for octane number is : 2,2-dimethyl hexane 2-methyl heptane N-heptane Iso-octane 2,2-dimethyl hexane 2-methyl heptane N-heptane Iso-octane ANSWER DOWNLOAD EXAMIANS APP
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