Aluminium Chloride

Q.

$AlC{l}_3$ exists as a dimer

1. True

2. False

Q.

Which of the following is formed when aluminium oxide and carbon is strongly heated in dry chlorine gas

1. Aluminium chloride

2. Hydrate aluminium chloride

3. Anhydrous aluminium chloride

4. None of these

Q.

In $A{l}_{2}C{l}_6$, which statement is incorrect-

1. Four Al - Cl bonds are of same length and two of different length

2. Six Al - Cl bonds are of same length and two of different length

3. The angle Cl - Al - Cl is 110º and 93º

4. The angle Al - Cl - Al is 87º

Q. Which one of the following is the correct statement?

1. Beryllium exhibits coordination number of six
2. B₂H₆ .2NH₃ is known as ‘inorganic benzene’.
3. Boric acid is a protonic acid
4. Chlorides of both beryllium and aluminium have bridged chloride structures in solid phase

Q. Which of the following is/are method(s) to prepare aluminium chloride?

1. Passing dry $HCl$ gas over heated aluminium
2. Heating a mixture of alumina and carbon under chlorine gas at atmospheric pressure
3. Dissolving aluminium metal in dilute hydrochloric acid
4. Dissolving aluminium hydroxide in dilute hydrochloric acid

Q. The coordination number of Al in crystalline $AlC{l}_3$ is

1. 3
2. 6
3. 2
4. 1

Q. Among the following, the correct statement(s) is(are):

1. $Al(C{H}_3{)}_3$ has the three-centre two-electron bonds in its dimeric structure
2. $B{H}_3$ has the three-centre two-electron bonds in its dimeric structure
3. $AlC{l}_3$ has the three-centre two-electron bonds in its dimeric structure
4. The Lewis acidity of $BC{l}_3$ is greater than that of $AlC{l}_3$

Q. $Al{F}_3$ is soluble in HF only in presence of KF. It is due to the formation of

1. $Al{H}_3$
2. $K\left[Al{F}_{3}H\right]$
3. $K_3\left[Al{F}_3{H}_3\right]$
4. $K_3\left[Al{F}_6\right]$

Q. The electropositive character is the maximum for which of the following elements in group 13?

1. $Al$
2. $B$
3. $Ga$
4. $In$

Q. Which one of the following exist in aqueous medium?
M=Aluminium

1. $\left[M\right(H_{2}O{)}_6{]}^{3+}$
2. $\left[M\right(OH{)}_3{]}^{-}$
3. $\left[M\right(H_{2}O{)}_5{]}^{3+}$
4. $\left[M\right(H_{2}O{)}_6{]}^{2+}$