Chemistry The element used for making solar cells is Silicon Calcium Magnesium Sodium Silicon Calcium Magnesium Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The oxidation number of nickel in K4[Ni(CN)4] is –4 8 4 Zero –4 8 4 Zero ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to sublimation of sodium to emit yellow colour Its ability to absorb all other colours except yellow The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum The low ionisation energy of sodium sublimation of sodium to emit yellow colour Its ability to absorb all other colours except yellow The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum The low ionisation energy of sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Calcium salts used as fertilizer is : Calcium Carbide Calcium Carbonate Calcium Sulphate Calcium Cyanide Calcium Carbide Calcium Carbonate Calcium Sulphate Calcium Cyanide ANSWER DOWNLOAD EXAMIANS APP
Chemistry If there is one million Mg2+ ions in MgCl2, how many chloride ions are there? Half a million One million Two million Ten million Half a million One million Two million Ten million ANSWER DOWNLOAD EXAMIANS APP
Chemistry Cement containing excess amount of lime Is quick setting Cracks during setting Is slow setting Becomes more strong Is quick setting Cracks during setting Is slow setting Becomes more strong ANSWER DOWNLOAD EXAMIANS APP
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