Chemistry ________ is a by product of sewage treatment and can be decomposed to produce biogas Sewer Sewage Scum Sludge Sewer Sewage Scum Sludge ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ultraviolet radiation striking the earth is due to the depletion of Ozone Carbon dioxide Oxygen Carbon monoxide Ozone Carbon dioxide Oxygen Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Why is water not suitable for putting out a petrol fire ? Petrol is too inflammable to be extinguished by water The oxygen content of water is isolated by petrol and thus it helps in burning The heat required for combustion of petrol is very low Water, being heavy, slips below petrol which thus remains in contact with air and burns Petrol is too inflammable to be extinguished by water The oxygen content of water is isolated by petrol and thus it helps in burning The heat required for combustion of petrol is very low Water, being heavy, slips below petrol which thus remains in contact with air and burns ANSWER DOWNLOAD EXAMIANS APP
Chemistry When quick lime is added to water Temperature decreases No heat change takes place Heat is liberated Heat is absorbed Temperature decreases No heat change takes place Heat is liberated Heat is absorbed ANSWER DOWNLOAD EXAMIANS APP
Chemistry Vinegar is ________ . Glacial formic acid Glacial acetic acid Diluted acetic acid Diluted formic acid Glacial formic acid Glacial acetic acid Diluted acetic acid Diluted formic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry The quality of petrol is expressed in terms of Octane number Added unlead compounds Gold number Cetane number Octane number Added unlead compounds Gold number Cetane number ANSWER DOWNLOAD EXAMIANS APP
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