Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuSO4 Cu(NO3)2 CuCO3 Cu(OH)2 CuO CuSO4 Cu(NO3)2 CuCO3 Cu(OH)2 CuO ANSWER DOWNLOAD EXAMIANS APP
Chemistry A subshell with l=2 can take up 8 electron 5 electron 3 electron 10 electron 8 electron 5 electron 3 electron 10 electron ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element by number in the living system is : Nitrogen Oxygen Hydrogen Carbon Nitrogen Oxygen Hydrogen Carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry What are the components responsible for acid rain? Carbon dioxide (CO2) and Carbon monoxide (CO) Sulphur dioxide (SO2) and Nitrogen oxides (NOx) Oxides of carbon (COx) and Oxides of nitrogen (NOx) Nitrogen monoxide (NO) and Carbon monoxide (CO) Carbon dioxide (CO2) and Carbon monoxide (CO) Sulphur dioxide (SO2) and Nitrogen oxides (NOx) Oxides of carbon (COx) and Oxides of nitrogen (NOx) Nitrogen monoxide (NO) and Carbon monoxide (CO) ANSWER DOWNLOAD EXAMIANS APP
Chemistry Major portion of the earth’s crust is mainly constituted by Silicon and Iron Silicon and Aluminium Oxygen and Iron Oxygen and Silicon Silicon and Iron Silicon and Aluminium Oxygen and Iron Oxygen and Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is biodegradable ? Paper Plastic D.T. Aluminium Paper Plastic D.T. Aluminium ANSWER DOWNLOAD EXAMIANS APP
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