Chemical Process Which of the following is not responsible for causing permanent hardness of water? CaCl₂ None of these Ca(HCO₃)₂ MgCl₂ CaCl₂ None of these Ca(HCO₃)₂ MgCl₂ ANSWER DOWNLOAD EXAMIANS APP
Chemical Process High purity nitrogen is used in Both A & B Neither A nor B Making protective gas (95% N₂ + 5% H₂) for annealing of cold rolled steel strip coils Fire fighting purposes Both A & B Neither A nor B Making protective gas (95% N₂ + 5% H₂) for annealing of cold rolled steel strip coils Fire fighting purposes ANSWER DOWNLOAD EXAMIANS APP
Chemical Process The purpose of tanning in leather industry is to Make it flexible Impart water resistance Stiffen the leather Smoothen the leather Make it flexible Impart water resistance Stiffen the leather Smoothen the leather ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Sulphur addition in soap is done to Increase its cleansing action Fasten lather formation Improve the soap texture Cure pimples & dandruff Increase its cleansing action Fasten lather formation Improve the soap texture Cure pimples & dandruff ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Thermosetting materials None of these Are cross-linked molecules Soften on application of heat Are solvent soluble None of these Are cross-linked molecules Soften on application of heat Are solvent soluble ANSWER DOWNLOAD EXAMIANS APP
Chemical Process A mineral is termed as 'ore', if All of these A metal can be economically extracted from it It contains ≥ 40% metal The metal present in it is costly All of these A metal can be economically extracted from it It contains ≥ 40% metal The metal present in it is costly ANSWER DOWNLOAD EXAMIANS APP
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