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

1. Acetylide

2. Methanide

3. Allyide

4. Alloy

Which of the following statements regarding the relative stability of tin and lead compounds is incorrect?
 

1. PbX₂ is generally more stable than PbX₄.

2. PbCl₄ is less stable than SnCl₄, whereas PbCl₂ is more stable than SnCl₂.

3. PbCl₄ is less stable than SnCl₄.

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

Which of the following statements is incorrect?

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

Which of the following is least likely to act as a Lewis base?

Which of the following compounds exhibits a layered structure similar to that of graphite?

1. Boron (B)

2. Boron carbide (B₄C)

3. Diborane (B₂H₆)

4. Boron nitride (BN)

Which of the following products is formed when orthoboric acid is heated to red heat?

 Which among the following is a gas?

1. $B{F}_3$

2. $BC{l}_3$

3. $BB{r}_3$

4. $B{I}_3$

What happens when aluminium is added to an aqueous potassium hydroxide solution?

1. No reaction takes place 

2. Oxygen gas is evolved

3. Water is produced 

4. Hydrogen gas is evolved