Chemistry When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is Hydrogen Carbon dioxide All of them Oxygen Hydrogen Carbon dioxide All of them Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a secondary pollutant ? SO2 PAN CO NO SO2 PAN CO NO ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following elements is an example of noble gas ? Nitrogen Helium Chlorine Hydrogen Nitrogen Helium Chlorine Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Cement is usually a mixture of : Lime stone and silicon dioxide Calcium silicate and calcium aluminate Calcium silicate and calcium ferrate Calcium aluminate and calcium ferrate Lime stone and silicon dioxide Calcium silicate and calcium aluminate Calcium silicate and calcium ferrate Calcium aluminate and calcium ferrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The rusting of iron is a/an None of these Electrical change Physical change Electrochemical change None of these Electrical change Physical change Electrochemical change ANSWER DOWNLOAD EXAMIANS APP
Chemistry A polymeric substance used to make parachute is Terylene Cotton Viscose Rayon Terylene Cotton Viscose Rayon ANSWER DOWNLOAD EXAMIANS APP
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