Chemistry Helium gas is used in gas balloons instead of hydrogen gas because it is More stable More abundant than hydrogen Lighter than hydrogen Non-combustible More stable More abundant than hydrogen Lighter than hydrogen Non-combustible ANSWER DOWNLOAD EXAMIANS APP
Chemistry The non-metal found in the liquid state is Fluorine Nitrogen Chlorine Bromine Fluorine Nitrogen Chlorine Bromine ANSWER DOWNLOAD EXAMIANS APP
Chemistry What particles move around the nucleus of an atom and are negatively charged? Electrons Neutrons Protons Positrons Electrons Neutrons Protons Positrons 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 metals form an amalgam with other metals ? Mercury Zinc Tin Lead Mercury Zinc Tin Lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Rusting of iron takes place due to Oxidation Corrosion Carbonation Exfoliation Oxidation Corrosion Carbonation Exfoliation ANSWER DOWNLOAD EXAMIANS APP
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