1 mol each of the following compounds is dissolved in 1L of solution. Which will have the largest value?
HF
HCl
HBr
HI
Carbon and CO gas are used to reduce which of the following pairs of metal oxides for extraction of metals?
FeO, SnO
SnO, ZnO
BaO, Na2O2
FeO, ZnO
Which of the following metal ions will form complexes with the same magnetic moment and geometry irrespective of the nature of ligands?
Ni2+
Fe2+
Cu2+
Co2+
Decay constant of a radioactive substance is 69.3 sec-1, find of the same substance.
4 × 10-2 sec
2 × 10-2 sec
1 × 10-2 sec
None of these
In the change[Cu(H2O)6F]2+ [CuCl(H2O)5]+, the colour changes from
blue to green
blue to pink
pink to green
pink to blue
B.
blue to pink
In the above given reaction, the colour changes from blue to pink.
Assertion : Copper sulphate solution is not stored in zinc vessel.
Reason : Zinc forms complex with CuSO4.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.