Q. No.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
Codes:
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 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. |
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 |
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
Boron fluoride exists as BF3 but boron hydride doesn't exist as BH3 because
1. Due to pπ−pπ back bonding in BF3
2. Due to pπ−dπ back bonding in BF3
3. Due to pπ−pπ backbonding in BH3
4. Due to pπ−dπ backbonding in BH3
Why PbO2 is a stronger oxidising agent than SnO2
1. Due to inert pair effect
2. Due to high electronegativity diffrence in both
3. Due to High size diffrence in both
4. None of these
Why does the element silicon, not form a graphite-like structure whereas carbon does?
1. Due to the smallest size and highest electronegativity of Si-element in group
2. Due to the smallest size and Highest electronegativity of C-element in group
3. Due to inert pair effect
4. Due to Fajan's rule
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
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