Chemistry Helium gas is used in gas balloons instead of hydrogen gas because it is Non-combustible More stable Lighter than hydrogen More abundant than hydrogen Non-combustible More stable Lighter than hydrogen More abundant than hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used for dating very old objects of archaeological importance? Carbon-14 Radium Tritium Phosphorus-31 Carbon-14 Radium Tritium Phosphorus-31 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The hottest part of the gas flame is known as blue zone dark zone luminous zone non-luminous zone blue zone dark zone luminous zone non-luminous zone ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most reactive among the halogens is Fluorine Bromine Chlorine Iodine Fluorine Bromine Chlorine Iodine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical name of vinegar is Formaldehyde Acetone Acetic acid Ethanol Formaldehyde Acetone Acetic acid Ethanol ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals does not react with water to produce Hydrogen ? Lithium Potassium Cadmium Sodium Lithium Potassium Cadmium Sodium ANSWER DOWNLOAD EXAMIANS APP
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