A + B C + D. If initially the concentration of A and B are both equal but at equilibrium, concentration of D will be twice of that of A, then what will be the equilibrium constant of reaction?
4/9
9/4
1/9
4
The geometry of Ni(CO)4 and Ni(PPh3)2Cl2 are:
both square planar
tetrahedral and square planar respectively
both tetrahedral
square planar and tetrahedral respectively
Which of the following is not a property of liquid state ?
Intermolecular force of attraction in a liquid is quite large
All liquids accompanied by cooling on evaporation
Lower the boiling point of a liquid, greater is its vapour pressure at room temperature
A liquid boils at high temperature at the top of a mountain than at the sea level
If for a sucrose solution, elevation in boiling point is 0.1°C, then what will be the boiling point of NaCl solution for same molal concentration ?
0.1C
0.2C
0.08C
0.01C
Which of the following have maximum number of unpaired electrons ?
Fe3+
Fe2+
Co2+
Co3+
A.
Fe3+
Fe3+ has maximum number of unpaired electrons, i.e. 5
Fe3+ [Ar]3d54s0
Given pH of a solutionA is 3 and it is mixed with another solution B having pH 2. If both mixed, then resultant pH of the solution will be :
3 : 2
1 : 9
3 : 4
3 : 5
If magnetic quantum number of a given atom represented by -3, then what will be its principal quantum number ?
2
3
4
5