Chemistry The oxidation number of nickel in K4[Ni(CN)4] is Zero 8 –4 4 Zero 8 –4 4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass of one Avogadro number of helium atom is 4 x 6.02 x 1023 gram 8.00 gram 1.00 gram 4.00 gram 4 x 6.02 x 1023 gram 8.00 gram 1.00 gram 4.00 gram ANSWER DOWNLOAD EXAMIANS APP
Chemistry The addition of gypsum to portland cement helps in : Increasing the strength of cement Rapid setting of cement Preventing rapid setting of cement Reduction in the cost of cement Increasing the strength of cement Rapid setting of cement Preventing rapid setting of cement Reduction in the cost of cement ANSWER DOWNLOAD EXAMIANS APP
Chemistry The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of an oxidation reaction an elimination reaction an addition reaction a condensation reaction an oxidation reaction an elimination reaction an addition reaction a condensation reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry The quality of petrol is expressed in terms of Added unlead compounds Cetane number Octane number Gold number Added unlead compounds Cetane number Octane number Gold number ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most suitable unit for expressing nuclear radius is : Angstrom Fermi Micron Nanometre Angstrom Fermi Micron Nanometre ANSWER DOWNLOAD EXAMIANS APP