An amphoteric hydroxide among the following is :
1.
2.
3.
4.
The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCO3 is :
1.
2.
3.
4.
HCl was passed through a solution of CaCl2, MgCl2, and NaCl. Compound(s) that get crystallize is/are-
1. Only NaCl
2. Only MgCl2
3. NaCl, MgCl2, and CaCl2
4. Both MgCl2 and CaCl2
1. K+ > Na+ > Rb+ > Cs+
2. Cs+ > Rb+ > K+ > Na+
3. Rb+ > K+ > Cs+ > Na+
4. Na+ > K+ > Rb+ > Cs+
The incorrect statement among the following is -
1. Li+ has minimum degree of hydration among alkali metal cations.
2. The oxidation state of K in KO2 is +1
3. Sodium is used to make Na / Pb alloy.
4. MgSO4 is readily soluble in water.
The incorrect statement among the following is-
1. Sodium metal is used in organic qualitative analysis.
2. Sodium carbonate is soluble in water and it is used in inorganic qualitative analysis.
3. Potassium carbonate can be prepared by the solvay process.
4. Aq. solution of potassium bicarbonate is a weak base.
Lithium shows a diagonal relationship with :
1. Sodium
2. Magnesium
3. Calcium
4. Aluminium
In case of alkali metal halides, the ionic character increases in the order :
1. MF < MCl < MBr < MI
2. MI < MBr < MCl < MF
3. MI < MBr < MF < MCl
4. None of the above.
A molecule among the following that has the highest hydration energy is -
1. MgCl2
2. CaCl2
3. BaCl2
4. SrCl2
Among the following the least thermally stable carbonate is :
2.
3.
4.