The highest magneticmoment is shown by the transition metal ion with the configuration :
3d2
3d5
3d7
3d9
In which of the following complex ion, the central metal ion is in a state of sp3d2 hybridisation?
[CoF6]3-
[Co(NH3)6]3+
[Fe(CN)6]3-
[Cr(NH3)6]3+
The concentration of a reactant X decreases from 0.1 M to 0.005 Min 40 minute. If the reaction follows 1 order kinetics, the rate of the reaction when the concentration of X is 0.01 M will be :
1.73 × 10-4 M min-1
3.47 × 10-4 M min-1
3.47 × 10-5 M min-1
7.5 × 10-5 M min-1
When a quantity of electricity is passed through CuSO4 solution, 0.16 g of copper gets deposited. If the same quantity of electricity is passed through acidulated water, then the volume of H2 liberated at STP will be : [given : atomic weight of Cu = 64]
4.0 cm3
56 cm3
604 cm3
8.0 cm3
Which one of the following condition will increase the voltage of the cell represented by the equation?
Cu(s) + 2Ag+(aq) Cu2+(aq) + 2Ag(s)
Increase inthe dimension of Cu electrode
Increase in the dimension of Ag electrode
Increase inthe concentration of Cu2+ ion.
Increase in the concentration of Ag+ ions.
The mass of glucose that should be dissolved in 50 g of water in order to produce the same lowering of vapour pressure as is produced by dissolving 1 g of urea in the same quantity of water is:
1g
3g
6g
18g
B.
3g
Which of the following electrolyte will have maximum flocculation value for Fe(OH)3 sol?
NaCl
Na2S
(NH4)3PO4
K2SO4
The radii of Na+ and Cl- ions are 95 pm and 181 pm respectively. The edge length of NaCl unit cell is :
276 pm
138 pm
552 pm
415 pm
The formula mass of Mohr's salt is 392. The iron present in it is oxidised by KMnO4 in acid medium. The equivalent mass of Mohr's salt is :
392
31.6
278
156