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. |
Given below are two statements:
| Assertion (A): | Silicones are water-repelling in nature. |
| Reason (R): | Silicones are organosilicon polymers, which have (- R2SiO - ) as repeating units. |
| 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
A compound among the following that is used in cosmetic surgery is -
| 1. | Silica | 2. | Silicates |
| 3. | Silicones | 4. | Zeolites |
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. | \(\mathrm{H}_2 ~\text{and} ~\mathrm{O}_2 \) |
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