Chemistry Which one of the following statements is not correct? Vulcanisation of rubber makes it Chemical resistant Strong and hard Withstand higher temperatures Soft and flexible Chemical resistant Strong and hard Withstand higher temperatures Soft and flexible ANSWER DOWNLOAD EXAMIANS APP
Chemistry Earth’s atmosphere is an envelope of gases extending to a height of 200 km 100 km 150 km 300 km 200 km 100 km 150 km 300 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is not a cause for present global warming and climate change ? Deforstation Carbondioxide emission Methane emission CFC emission Deforstation Carbondioxide emission Methane emission CFC emission ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most commonly used bleaching agent is alcohol carbon dioxide sodium chlorine chlorine alcohol carbon dioxide sodium chlorine chlorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Peptization is a process of Purification of colloids Dispersing precipitates into colloidal solution Precipitation of colloidal particles Protection of colloidal solution Purification of colloids Dispersing precipitates into colloidal solution Precipitation of colloidal particles Protection of colloidal solution ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuCO3 Cu(OH)2 Cu(NO3)2 CuO CuSO4 CuCO3 Cu(OH)2 Cu(NO3)2 CuO CuSO4 ANSWER DOWNLOAD EXAMIANS APP
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