Chemical Properties

The correct order of the mobility of the alkali metal ions in aqueous solution is:

1. $L{i}^{+}>N{a}^{+}>K^{+}>R{b}^{+}$

2. $N{a}^{+}>K^{+}>R{b}^{+}>L{i}^{+}$

3. $K^{+}>R{b}^{+}>N{a}^{+}>L{i}^{+}$

4. $R{b}^{+}>K^{+}>N{a}^{+}>L{i}^{+}$

The correct order of increasing thermal stability of K₂CO₃, MgCO₃, CaCO₃, and BeCO₃ is:

1. $BeC{O}_3<MgC{O}_3<K_{2}C{O}_3<CaC{O}_3$

2. $BeC{O}_3<MgC{O}_3<CaC{O}_3<K_{2}C{O}_3$

3. $MgC{O}_3<BeC{O}_3<CaC{O}_3<K_{2}C{O}_3$

4. $K_{2}C{O}_3<MgC{O}_3<CaC{O}_3<BeC{O}_3$

In which of the following the hydration energy is higher than the lattice energy?

1. $BaS{O}_4$

2. $MgS{O}_4$

3. $CaS{O}_4$

4. $SrS{O}_4$

In the case of alkali metals, the covalent character decreases in the order:

1. MCl>Ml>MBr>MF

2. MF>MCl>MBr>Ml

3. MF>MCl>Ml>MBr

4. Ml>MBr>MCl>MF

A compound that has higher hydration enthalpy than the lattice enthalpy is:

1. ${\mathrm{CaSO}}_4$

2. ${\mathrm{BeSO}}_4$

3. ${\mathrm{BaSO}}_4$

4. ${\mathrm{SrSO}}_4$

Among the given options, what is the property of the alkaline earth metals that increases with their atomic number?
1. Solubility of their hydroxides in water
2. Solubility of their sulphates in water
3. Ionization energy
4. Electro-negativity

Which one of the following compounds is a peroxide?

1. $K{O}_2$

2. $Ba{O}_2$

3. $Mn{O}_2$

4. $N{O}_2$

Which one of the following alkali metals forms only the normal oxide M₂O on heating in air?

1. Rb

2. K

3. Li

4. Na

A compound that releases CO₂ most easily upon heating is?
1. $K_{2}C{O}_3$
2. $N{a}_{2}C{O}_3$
3. $MgC{O}_3$
4. $CaC{O}_3$

Compound among the following that can be used as the halide component in the Friedel-Crafts reaction :

1. Chlorobenzene

2. Bromobenzene

3. Chloroethene

4. Isopropyl chloride

A compound that does not undergo S_N1 reaction with OH^- is:

1.		2.
3.		4.