Chemistry Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water Manganese Calcium Magnesium None of these Manganese Calcium Magnesium None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is the heaviest metal among the following? Copper Gold Iron Silver Copper Gold Iron Silver ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following elements is used in the manufacture of safety matches? Sodium Phosphorus Silicon Graphite Sodium Phosphorus Silicon Graphite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The basic chemical building block of natural rubber obtained from trees is Acetylene Vinyl Chloride Neoprene Isoprene Acetylene Vinyl Chloride Neoprene Isoprene ANSWER DOWNLOAD EXAMIANS APP
Chemistry The value of gas constant R in Ergs deg–1 mole–1 is 8.341 × 107 8.314 × 107 4.183 × 107 8.413 × 107 8.341 × 107 8.314 × 107 4.183 × 107 8.413 × 107 ANSWER DOWNLOAD EXAMIANS APP
Chemistry When formaldehyde and potassium hydroxide are heated, we get Methane Ethyl formate Methyl alcohol Acetylene Methane Ethyl formate Methyl alcohol Acetylene ANSWER DOWNLOAD EXAMIANS APP
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