Chemistry The two metal ions that cause hardness to water are: Sodium, Potassium Calcium, Magnesium Sodium, Magnesium Sodium, Calcium Sodium, Potassium Calcium, Magnesium Sodium, Magnesium Sodium, Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is the most reactive halogen Iodine Bromine Fluorine Chlorine Iodine Bromine Fluorine Chlorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a noble gas ? Helium Argon Hydrogen Neon Helium Argon Hydrogen Neon ANSWER DOWNLOAD EXAMIANS APP
Chemistry At room temperature, the metal that remains liquid is: Zinc Mercury Platinum Lead Zinc Mercury Platinum Lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals has least melting point ? Copper Silver Gold Mercury Copper Silver Gold Mercury ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chief source for the production of nitrogeneous fertilizers is : Nitrogen dioxide Nitrogen Ammonia Nitric acid Nitrogen dioxide Nitrogen Ammonia Nitric acid ANSWER DOWNLOAD EXAMIANS APP
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