Solubility product of PbCl2 at 298 K is 1 x 10-6. At this temperature solubility of PbCl2 in mol/L is
(1 x 10-6)1/2
(1 x 10-6)1/3
(0.25 x 10-6)1/3
(2.5 x 10-6)1/2
The set representing the correct order for first ionisation potential is
K > Na > Li
Be > Mg > Ca
B > C > N
Ge > Si > C
When dihydroxy acetone reacts with HIO4, the product is/ are
HCHO
HCOOH
HCHO and HCOOH
HCHO and CO2
Plaster of paris is
CaSO4.H2O
CaSO4.2H2O
CaSO4.H2O
CaSO4.4H2O
A.
CaSO4.H2O
Calcium sulphate hemihydrate (CaSO4.H2O) is called plaster of paris.
The number of moles of oxygen obtained by the electrolytic decomposition of 108 g water is
2.5
3
5
7.5