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Mass of 6.02 X 10 ^ 23 electrons is ----- : 1.008 mg, 0.55 mg, 0.184 mg, 1.673 mg
The largest number of molecules present -------: 3.6 g of H2 O, 4.8 g of C2H5 OH, 8 g of H CO, 5.4 g of N2O5
The comparative rates at which the solutes move in paper chromatography depends on ---- : Size of paper , Rf values, Temperature of the experiment, Size of chromatographic trank
Acetone and chloroform are soluble in each other due to : Intermolecular hydrogen bounding, Ion-dipole interaction, INSTantaneous dipoles, All of these
Ionic solids are characterized by : Low melting, Good conductivity in solid state, High Vapour pressure, Solubibity in polar Solvent
Number of molecule in one dm3 of water is closed to ------ : 6.02/22.4 X 10 ^ 23, 12.04/22.4 X 10 ^ 23, 18 / 22.4 X 10 ^ 23, 55.6 X 6.02 X 10 ^ 23
Quantum number values for 3rd orbitals are ------- : n = 3, l =2, n = 3, l =3, n = 2, l =3, n = 2, l =3
Bohr model of Atom is contradicted by ------- : Plancks Quantum Theory , Dual nature of matter, Heisenbergs un-certainty Principle, All of these
Enthalpy of Neutralization of all the Strong Acids and strong bases have the same value because ------ : Neutrslization leads to the formation of salts and water, Strong Acids and Bases are ionic substanc
Which of the following hydrogen Halides has the highest percentage of ionic character ? HCl, HBr, HF, HI
The pH of 10-3 moles dm-3 of an aqueous solution of H2sO4 is ------ : 3, 2.7, 2, 1.5
The product obtained at Anode by the electrolysis of an aqueous solution of H2SO4 using an inert electrode is ---------- : O2, H2, SO2, S
Which of the following solution has the highest boiling-Point ? 5.85 % NaCl Solution, 18.0 % Glucose Solution, 6.0 % urea solution, All Have same Boiling-Point
If salt bridge is NOT used between two half cell then the voltage of a cell : Decreases rapidly, Decreased slowly, Does not change , Drops to zero
Which order of reaction obeys the expression t 1/2 = 1/ka : First order, Second Order, Third Order, Zero Order
According to molecular orbitals theory , electrons in the molecular orbitals are filled according to ------ : Aufbaus Principle, Paulis exclusion principle, Hunds rule, All of these
The equation for determination of heat of neutralization by using glass Calorimeter : q = m x S x ? T, E = m x S x ? T, q = m x C x ? T, ? E = qv