Q. No.| 1. | Ga | 2. | In |
| 3. | Al | 4. | B |
\(\begin{aligned} & \mathrm{Al}^+ / \mathrm{Al}=+0.55 \mathrm{~V} \text { and } \mathrm{Tl}^{+} / \mathrm{Tl}=-0.34 \mathrm{~V} \\ & \mathrm{Al}^{3+} / \mathrm{Al}=-1.66 \mathrm{~V} \text { and } \mathrm{Tl}^{3+} / \mathrm{Tl}=+1.26 \mathrm{~V} \end{aligned} \)
The incorrect statement among the following is:
1. Al is more electropositive than TI
2. Tl3+ is a good reducing agent than Tl1+
3. Al+ is unstable in solution.
4. Tl can be easily oxidized to Tl+ as compared to Tl3+
Which of the following is the correct statement?
1. Ga+ is more stable than ln+.
2. Al+ is more stable than ln+.
3. Ga+ is more stable than Al+.
4. Al+ is more stable than Ga+.
Aluminium chloride in acidified aqueous solution forms a complex 'A'.
The formula of A and hybridisation state of Al in 'A' is respectively:
1. [Al(H2O)6]3+, sp3d2
2. [Al(H2O)4]3+, sp3
3. [Al(H2O)4]3+, dsp2
4. [Al(H2O)]3+, d2sp3
The correct order of atomic radii of the group 13 elements is-
1. B < Al < In < Ga < Tl
2. B < Al < Ga < In < Tl
3. B < Ga < Al < Tl < In
4. B < Ga < Al < In < Tl
AlF3 is soluble in HF only in the presence of KF due to the formation of:
| 1. | K3[AlF3H3] | 2. | K3[AlF6] |
| 3. | AlH3 | 4. | K[AlF3H] |
The stability of +1 oxidation state among Al, Ga, In and Tl increases in the sequence?
1. Ga < ln < Al < Tl
2. Al < Ga < ln < Tl
3. Tl < ln < Ga < Al
4. ln < Tl < Ga < Al
Which of the following statements is incorrect?
| 1. | NaHCO3 on heating gives Na2CO3. |
| 2. | Pure sodium metal dissolves in liquid ammonia to give a blue solution. |
| 3. | NaOH reacts with glass to give sodium silicate. |
| 4. | Aluminium reacts with excess NaOH to give Al(OH)3. |
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
Incorrect statement among the following about zeolites is:
| 1. | They have an open structure which enables them to take up small molecules. |
| 2. | Zeolites are aluminosilicates having a three-dimensional network. |
| 3. | Some of the \(\mathrm{SiO}_4^{4-}\)units are replaced by \(\mathrm{AlO}_4^{5-}\) and \(\mathrm{AlO}_6^{9-}\) ions in zeolites. |
| 4. | They are used as cation exchangers. |
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