Chemical Process Permanent hardness of water can be removed by All of these Passing it through cation & anion exchangers Adding alum Simply boiling All of these Passing it through cation & anion exchangers Adding alum Simply boiling ANSWER DOWNLOAD EXAMIANS APP
Chemical Process __________ are used as corrosion inhibitor for iron & steel in aqueous solutions. Phosphates Sulphates Bi-carbonates Chromates Phosphates Sulphates Bi-carbonates Chromates ANSWER DOWNLOAD EXAMIANS APP
Chemical Process The compressive strength of cement should not be less than about 110Kg/cm² after three days & not less than 170Kg/cm² after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm²/gm. 4000 800 1600 8500 4000 800 1600 8500 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Average sulphur content in Indian pyrites is about __________ percent. 55 15 70 35 55 15 70 35 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Coke used for the production of calcium carbide should have Low ignition temperature Low ash content All of these High electrical resistivity Low ignition temperature Low ash content All of these High electrical resistivity ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Which of the following, when pyrolysed, produces perchloro-ethylene? Chlorinated paraffin Ethylene dichloride Chlorobenzene Carbon tetrachloride Chlorinated paraffin Ethylene dichloride Chlorobenzene Carbon tetrachloride ANSWER DOWNLOAD EXAMIANS APP
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