Chemistry Browning of paper in old books is caused by Frequent use Oxidation of cellulose Lack of aeration Collection of dust Frequent use Oxidation of cellulose Lack of aeration Collection of dust ANSWER DOWNLOAD EXAMIANS APP
Chemistry The quality of petrol is expressed in terms of Octane number Gold number Cetane number Added unlead compounds Octane number Gold number Cetane number Added unlead compounds ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used for refrigeration? Freon Chlorine Sulphur dioxide Phosphine Freon Chlorine Sulphur dioxide Phosphine ANSWER DOWNLOAD EXAMIANS APP
Chemistry One property of ammonia is It is insoluble in water Its aqueous solution turns red litmus blue It is a yellowish gas It is a odourless gas It is insoluble in water Its aqueous solution turns red litmus blue It is a yellowish gas It is a odourless gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry Impure camphor is purified by Fractional distillation Fractional crystallisation Steam distillation Sublimation Fractional distillation Fractional crystallisation Steam distillation Sublimation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Extensively used nitrogenous fertilizer is Urea Nitro-lime Ammonium nitrate Ammonium sulphate Urea Nitro-lime Ammonium nitrate Ammonium sulphate ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS