Chemistry Brass is a solution of molten copper in Gaseous zinc Solid zinc Molten zinc Molten tin Gaseous zinc Solid zinc Molten zinc Molten tin ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to The low ionisation energy of sodium Its ability to absorb all other colours except yellow sublimation of sodium to emit yellow colour The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum The low ionisation energy of sodium Its ability to absorb all other colours except yellow sublimation of sodium to emit yellow colour The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metallic constituents of hard water are : Magnesium, calcium and tin Iron, tin and calcium Magnesium, tin and iron Calcium, magnesium and iron Magnesium, calcium and tin Iron, tin and calcium Magnesium, tin and iron Calcium, magnesium and iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful CO2 in the air Solar ultraviolet radiation SO2 in the air Solar infrared radiation CO2 in the air Solar ultraviolet radiation SO2 in the air Solar infrared radiation ANSWER DOWNLOAD EXAMIANS APP
Chemistry What are the components responsible for acid rain? 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) Carbon dioxide (CO2) and Carbon monoxide (CO) Sulphur dioxide (SO2) and Nitrogen oxides (NOx) Oxides of carbon (COx) and Oxides of nitrogen (NOx) ANSWER DOWNLOAD EXAMIANS APP
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