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Molecular mass of CaCO3 is : 100, 90, 120, 106
Percentage of oxygen in water is : 0.8, 0.8889, 0.088, 0.098
Which of the following is purified by sublimation : Naphthalane, Benzonic acid, Ammonium Choride, All o these
Which gas will diffuse more rapidly : CO2, NH3, HCl, SO2
Transition temperature of tin is : 95.5 °C , 13.2°C , 0°C , 128.5°C
An orbital which which is spherical and symmetrical is : S - orbital, p - - orbital, d - - orbital, f - - orbital
The crystal of diamond is : Ionic, Colvent, molecule , Meetallic
Angstrom is the unit of : time , Length, Mass, Frequence
The most stable element are: Halogens, Lithium family, Noble gases, None Of These
the Hybridization of carbon in C2H4 is : SP, SP2, SP3, Not hybridized
Standard enthalpies are measured is : 273 K, 298 k, 373 k, All Of These
The concentrations of reactation of reactants and product at equilibium are : equal, Maxium, Minimum, Constant
0.1 mole of solute dissolved in 100 g of the Solvent will be : 0.1 molal, 1.0 molal, 0.5 molal, None Of These
Raoults law is represent by : ?p=p°Xp , ?P = P ° X2, ?P/P ° = X2 , None Of These
Postive ions are called : Cations, Anions, Molecules, Hydrated ions
The electrolyte used in fuel cell is : Aqueous NaCl, Molton NaCl, KOH, NaNO3
A substance which make the catalyst more effective is called : Inhibitor, Retarder, Promoter, Auto-catalyst