Chemistry Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid ? Methyl red Methylene blue Phenolphthaline Methyl orange Methyl red Methylene blue Phenolphthaline Methyl orange ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chief source for the production of nitrogeneous fertilizers is : Nitrogen dioxide Nitric acid Nitrogen Ammonia Nitrogen dioxide Nitric acid Nitrogen Ammonia ANSWER DOWNLOAD EXAMIANS APP
Chemistry The first metal used by a man was Copper Bronze Silver Brass Copper Bronze Silver Brass ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who modified Bohr's theory by introducing elliptical orbits for electron path Rutherford Sommerfeld Thomson Hund Rutherford Sommerfeld Thomson Hund ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which type of fire extinguisher is used for petroleum fire ? Foam type None of these Soda acid type Powder type Foam type None of these Soda acid type Powder type ANSWER DOWNLOAD EXAMIANS APP
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