Q. No.The correct order of ease of hydrolysis is-
1. CCl4 < SiCl4 < PCl5 < AlCl3
2. AlCl3 < CCl4 < PCl5 < SiCl4
3. CCl4 < AlCl3 < PCl5 < SiCl4
4. CCl4 < AlCl3 < SiCl4 < PCl5
Match the species given in Column I with the properties mentioned in Column II.
| Column I | Column II |
| A. \(\text{BF}^-_4\) | 1. Oxidation state of the central atom is +4 |
| B. AlCl3 | 2. Tetrahedral shape |
| C. SnO | 3. Lewis acid |
| D. PbO2 | 4. Can be further oxidized |
Codes:
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
Match the species given in Column I with properties given in Column II.
| Column I | Column II | ||
| A. | Diborane | 1. | Used as a flux for soldering metals |
| B. | Quartz | 2. | Crystalline form of silica |
| C. | Borax | 3. | Banana bonds |
| D. | Aluminosilicate | 4. | Used as a catalyst in petrochemical industries |
| A | B | C | D | |
| 1. | 3 | 4 | 1 | 2 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 3 | 2 | 1 | 4 |
| 4. | 4 | 1 | 3 | 2 |
Given below are two statements:
| Assertion (A): | If aluminium atoms replace a few silicon atoms in a three-dimensional network of silicon dioxide, the overall structure acquires a negative charge. |
| Reason (R): | Aluminium is trivalent while silicon is tetravalent. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
The reason behind carbon showing catenation property but lead does not is:
1. Due to the smaller size of C than that of Pb
2. Due to the smaller size of Pb than that of C
3. Due to the smaller ionization energy of C than that of Pb
4. Due to the inert pair effect
Identify the correct statements among the following:
| a. | CO2 (g) is used as a refrigerant for ice-cream and frozen food. |
| b. | The structure of C60 contains twelve six-carbon rings and twenty five-carbon rings. |
| c. | ZSM-5, a type of zeolite, is used to convert alcohol into gasoline. |
| d. | CO is a colourless and odourless gas |
1. (a) and (c) only
2. (b) and (c) only
3. (c) and (d) only
4. (a), (b) and (c) only
Aluminium reacts with concentrated HCl and concentrated NaOH to liberate which of the following gases respectively-
| 1. | \(\mathrm{H}_2 ~\text{and} ~\mathrm{H}_2 \) | 2. | \(\mathrm{O}_2 ~\text{and} ~\mathrm{O}_2 \) |
| 3. | \(\mathrm{O}_2 ~\text{and} ~\mathrm{H}_2 \) | 4. | \(\mathrm{H}_2 ~\text{and} ~\mathrm{O}_2 \) |
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.
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