The correct increasing order of tendency for catenation among group 14 elements?
1.
2.
3.
4.
Which of the following oxide is amphoteric in nature?
1. SnO2
2. SiO2
3. GeO2
4. CO2
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. |
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. |
In a Borax bead test, which compound is formed:
1. Orthoborate
2. Metaborate
3. Double oxide
4. Tetraborate
The most probable oxidation state of Pb & Sn will be:
1.
2.
3.
4.
BCl3 has higher stability than , because -
1. | The +2 oxidation state of Tl is more stable than the +2 oxidation state of B |
2. | The +2 oxidation state of B is more stable than the +2 oxidation state of Tl |
3. | The +3 oxidation state of B is more stable than the +3 oxidation state of Tl |
4. | The +3 oxidation state of Tl is more stable than the +3 oxidation state of B |
Boron trifluoride behaves as a Lewis acid because -
1. Boron trifluoride is electron-rich.
2. Boron trifluoride is electron-deficient.
3. Boron trifluoride is highly stable.
4. None of these.
The correct statement among the following regarding behavior of in water is -
1. | BCI 3 readily undergoes hydrolysis while CCI 4 completely resists hydrolysis. |
2. | CCI 4 readily undergoes hydrolysis while BCI 3 completely resists hydrolysis. |
3. | Both BCI 3 and CCI 4 readily undergo hydrolysis. |
4. | Neither BCI 3 nor CCI 4 undergo hydrolysis. |
Boric acid is a-
1. Protic acid.
2. Weak monobasic acid.
3. Lewis acid.
4. Both '2' and '3'