Chemistry When iron rusts, its weight Decreases Increases First increases and then decreases Remains the same Decreases Increases First increases and then decreases Remains the same ANSWER DOWNLOAD EXAMIANS APP
Chemistry Earth’s atmosphere is an envelope of gases extending to a height of 100 km 300 km 150 km 200 km 100 km 300 km 150 km 200 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry Highly toxic gas which causes headache, visual difficulty, paralysis and even death is All of these CO CO2 O3 All of these CO CO2 O3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Muddy water is treated with alum in purification process, itis termed as : Emulsification Adsorption Coagulation Absorption Emulsification Adsorption Coagulation Absorption ANSWER DOWNLOAD EXAMIANS APP
Chemistry One property of ammonia is Its aqueous solution turns red litmus blue It is a odourless gas It is a yellowish gas It is insoluble in water Its aqueous solution turns red litmus blue It is a odourless gas It is a yellowish gas It is insoluble in water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain is caused by SO2 and NO2 CO2and CFCs SO2 and particulates NO2and particulates SO2 and NO2 CO2and CFCs SO2 and particulates NO2and particulates ANSWER DOWNLOAD EXAMIANS APP
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