Hydrated aluminium chloride is an ionic compound and soluble in water giving -

1. Al³⁺ and Cl^- ions

2. ${\left[\mathrm{Al}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+}$ and Cl^- ions

3. ${\left[{\mathrm{AlCl}}_2{\left({\mathrm{H}}_2\mathrm{O}\right)}_4\right]}^{+}$ and ${\left[{\mathrm{AlCl}}_4{\left({\mathrm{H}}_2\mathrm{O}\right)}_2\right]}^{-}$  ions

4. None of the above

${\mathrm{Al}}_4{\mathrm{C}}_3$ is an ionic carbide. It is also known as :

1. Acetylide

2. Methanide

3. Allyide

4. Alloy

${\mathrm{AlCl}}_3$ on hydrolysis gives -

1. ${\mathrm{Al}}_2{\mathrm{O}}_3.{\mathrm{H}}_2\mathrm{O}$

2. $\mathrm{Al}{\left(\mathrm{OH}\right)}_3$

3. ${\mathrm{Al}}_2{\mathrm{O}}_3$

4. ${\mathrm{AlCl}}_3.6{\mathrm{H}}_2\mathrm{O}$

A compound that is sparingly soluble in cold water and fairly soluble in hot water is-

1. $\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2$

2. ${\mathrm{PbCl}}_2$

3. ${\mathrm{PbSO}}_4$

4. ${\mathrm{PbCrO}}_4$

Sn crumbles to a powder in very cold weather, due to –

1. Expansion of the crystal lattice

2. Formation of SnO at low temperature

3. The conversion of Sn to powdery meta stannic acid

4. The transition from white tin to grey form, that is amorphous

The incorrect statement among the following is -

1. ${\mathrm{PbX}}_2$ is more stable than ${\mathrm{PbX}}_4$

2. ${\mathrm{PbCl}}_4$ is less stable than ${\mathrm{SnCl}}_4$ but ${\mathrm{PbCl}}_2$ is more stable than ${\mathrm{SnCl}}_2$

3. ${\mathrm{PbCl}}_4$ is less stable than ${\mathrm{SnCl}}_4$

4. Pb(II) is a good reducing agent while Sn(II) is not

The incorrect statement among the following is:

1.  SnF₄ is ionic in nature.

2.  PbF₄ is covalent in nature.

3.  SiCl₄ is easily hydrolysed.

4.  GeX₄ (X = F, Cl, Br, I) is more stable than GeX₂

Al₂O₃ can be converted to anhydrous AlCl₃ by heating:

1. $A{l}_2{O}_3$ $with$ $HCl$ $gas$

2. $A{l}_2{O}_3$ $$with NaCl in solid-state

3. a mixture of $A{l}_2{O}_3$ $$ and carbon in dry $C{l}_2$ gas

4. $A{l}_2{O}_3$ $$ with $C{l}_2$ gas

The stability of the +1 oxidation state increases in the sequence:

1. Al <Ga<In<Tl

2. Tl<In<Ga<Al

3. In<Tl<Ga<Al

4. Ga<In<Al<Tl