Select the correct order of solubility (in water) from the following:

Q. Select the correct order of solubility (in water) from the following:

1. SrSO4 < CaSO4 < MgSO4 < BeSO4
2. NaF < KF < RbF < CsF
3. Ba(OH)2 > SR(OH)2 > Ca(OH)2 > Mg(OH)2
4. All of these

Answer: All of these