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Which of the following series of transitions in the spectrum of hydrogen atom fall in visible region?
In which case change in entropy is negative?
Identify the correct order of solubility in aqueous medium:
The vapour pressure of a solvent decreased by 10 mm of Hg when a non-volatile solute was added to the solvent. The mole fraction of the solute in solution is 0.2. What would be the mole fraction of the solvent if the decrease in vapour pressure is 20 mm of Hg?
The formation of an ideal solution from components A and B indicates:
Maximum oxidation state is shown by:
Vapour pressure of chloroform ($CHCl_3$) and dichloromethane ($CH_2Cl_2$) at 25°C are 200 mm Hg and 41.5 mm Hg respectively. Vapour pressure of the solution was obtained by mixing 25.5 g of $CHCl_3$ and 40 g of $CH_2Cl_2$ at the same temperature will be: (Molecular mass of $CHCl_3$ = 119.5 u and molecular mass of $CH_2Cl_2$ = 85 u)
Which colligative property provides the most accurate method for determining the molecular weight of proteins and polymers?
Which of the following statements is false?
For the four successive transition elements (Cr, Mn, Fe and Co), the stability of +2 oxidation state will be there in which of the following order? (At. No Cr= 24, Mn= 25, Fe=26, Co= 27)
Which of the following ions will exhibit colour in aqueous solutions?
Which of the following pairs has the same size?
The manganate and permanganate ions are tetrahedral, due to:
The d-electron configurations of Cr²⁺, Mn²⁺, Fe²⁺ and Ni²⁺ are 3d⁴, 3d⁵, 3d⁶ and 3d⁸ respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour? (At. No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)
The incorrect statement regarding the lanthanons is:
Name the gas that can readily decolourise acidified $\text{KMnO}_4$ solution.
Among the following, the incorrect statement regarding interstitial compounds is:
The reason for lanthanoid contraction is:
The correct electronic configuration of Gadolinium (Atomic number = 64) is:
The pair of electrons in the given carbanion, $\text{CH}_3\text{C}\equiv\text{C}^-$, is present in which of the following orbitals?