Chemistry The most abundant rare gas in the atmosphere is He Ne Ar Xe He Ne Ar Xe ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sea water is saltier than rain water because Sea animals are salt producing Sea beds have salt producing mines Rivers wash away salts from earth and pour them into the sea The air around the sea is saltish Sea animals are salt producing Sea beds have salt producing mines Rivers wash away salts from earth and pour them into the sea The air around the sea is saltish ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? Sulphur dioxide Carbon dioxide Nitrous oxide Chlorofluorocarbons Sulphur dioxide Carbon dioxide Nitrous oxide Chlorofluorocarbons ANSWER DOWNLOAD EXAMIANS APP
Chemistry The addition of gypsum to portland cement helps in : Preventing rapid setting of cement Reduction in the cost of cement Rapid setting of cement Increasing the strength of cement Preventing rapid setting of cement Reduction in the cost of cement Rapid setting of cement Increasing the strength of cement ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is not a ‘green house gas’ ? Chlorofluorocarbons Methane Carbon dioxide Nitrogen Chlorofluorocarbons Methane Carbon dioxide Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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