Chemistry The method that cannot be used for removing permanent hardness of water is distillation adding sodium carbonate adding caustic soda boiling distillation adding sodium carbonate adding caustic soda boiling ANSWER DOWNLOAD EXAMIANS APP
Chemistry The rusting of iron is a/an Electrical change Physical change Electrochemical change None of these Electrical change Physical change Electrochemical change None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry A pungent smell often present near the urinals is due to Urea Ammonia Sulphur-di- oxide Chlorine Urea Ammonia Sulphur-di- oxide Chlorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry The source of energy that causes the least global warming is Petroleum Natural Gas Coal Geothermal energy Petroleum Natural Gas Coal Geothermal energy ANSWER DOWNLOAD EXAMIANS APP
Chemistry The percentage of carbon in cost iron is : 3 to 5 6 to 8 0.5 to 1.5 0.01 to 0.25 3 to 5 6 to 8 0.5 to 1.5 0.01 to 0.25 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Helium gas is filled in ballons because It is lighter than air It is a noble gas Its atomic number is 2 It is one of the constitutents of water It is lighter than air It is a noble gas Its atomic number is 2 It is one of the constitutents of water ANSWER DOWNLOAD EXAMIANS APP
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