Which one of the following electrolytes is used in Down's process of extracting sodium metal?
NaCl + KCl + KF
NaCl
NaOH + KCl +KF
NaCl + NaOH
Compound X is anhydride of sulphuric acid. The number of σ-bonds and the number of π-bonds presentin X are, respectively :
3,3
4,2
2,4
4,3
During the electrolysis of cryolite, aluminium and fluorine are formed in ...... molar ratio :
1:2
2:3
1:1
1:3
Ferrous ion charges to X ion, on reacting with acidified hydrogen peroxide. The number of d-electrons present in X and its magnetic moment (in BM) are, respectively :
6 and 6.93
5 and 5.92
5 and 4.9
4 and 5.92
The oxidation state of Xe in XeO3 and the bond angle in it respectively are:
+6, 109°
+8, 103°
+6, 103°
+8, 120°
C.
+6, 103°
The oxidation state of Xe in XeO3, can be calculate as XeO3, x + (- 2 × 3) = 0
x = +6
XeO3 has sp3 -hybridisation with bond angle = 103°
The product obtained at anode when 50% H2SO4 aqueous solution is electrolysed using platinum electrodes is :
H2SO3
H2S2O8
O2
H2
Two oxides of nitrogen, NO and NO2 react together at 253K and form a compound of nitrogen X. X reacts with water to yield another compound of nitrogen Y. The shape of the anion of Y molecule is :
tetrahedral
triangular planar
square planar
pyramidal
Chlorine atom, in its third excited state, reacts with fluorine to form a compound X. The formula and shape of X are :
ClF5, pentagonal
ClF4, tetrahedral
ClF4, pentagonal bipyramidal
ClF7, pentagonal bipyramidal
If the mass defect of a nuclide is 3.32 x 10-26g, its binding energy is ......... MeV
9.31
18.62
27.93
37.24