Chemical Process Which of the following is not responsible for causing permanent hardness of water? MgCl₂ CaCl₂ None of these Ca(HCO₃)₂ MgCl₂ CaCl₂ None of these Ca(HCO₃)₂ ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Conversion of SO₂ to SO₃ in Monsanto 4-pass converter is about __________ percent. 90 98 80 100 90 98 80 100 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its Poor oxidation stability and high gum forming tendency Hydrolysis tendency in presence of water All of these Greater tendency of decomposition at elevated temperature Poor oxidation stability and high gum forming tendency Hydrolysis tendency in presence of water All of these Greater tendency of decomposition at elevated temperature ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Resistance to fusion of the refractory under a steady rising temperature condition is called Neither A nor B Spalling Both A & B Refractoriness Neither A nor B Spalling Both A & B Refractoriness ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C. 250-300 25 60-70 150-200 250-300 25 60-70 150-200 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Use of hydrated lime in water treatment All of these Before filtration, reduces the bacterial load on filters Is to adjust the pH value After filtration, combats the corrosive-ness of water due to the presence of O₂ & CO₂ All of these Before filtration, reduces the bacterial load on filters Is to adjust the pH value After filtration, combats the corrosive-ness of water due to the presence of O₂ & CO₂ ANSWER DOWNLOAD EXAMIANS APP
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