Q50 / 213 · NTA Abhyas (NEET) 2020 · Chemistry · s Block Elements

Select the correct order for the given properties–
(I) Thermal Stability: BaSO4>SrSO4>CaSO4>MgSO4
(II) Basic Nature: ZnO>BeO>MgO>CaO
(III) Solubility in water: LiOH>NaOH>KOH>RbOH
(IV) Melting point: NaCl>KCl>RbCl>LiCl

  • Correct answer
    A
    I, IV
  • B
    I, II and IV
  • C
    II, III
  • D
    All are correct

Solution

Basic nature = CaO>MgO>BeO>ZnO
Solubility order = LiOH<NaOH<KOH<RbOH
Melting point order NaCl>KCl>RbCl>LiCl

Hence, the correct answer is option: 'A'.

More s Block Elements Questions