| Column-I | Column-II | ||
| (A) | XX’ | (i) | T-shape |
| (B) | XX’3 | (ii) | Pentagonal bipyramidal |
| (C) | XX’5 | (iii) | Linear |
| (D) | XX’7 | (iv) | Square Pyramidal |
| (A) | (B) | (C) | (D) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (i) | (iv) | (iii) | (ii) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (iii) | (iv) | (i) | (ii) |
Choose the pairs of isoelectronic compounds which are isostructural:
1. TeF2, XeF2
2. IBr2-, XeF2
3. IF3, XeF2
4. BeCl2, XeF2
Which of the following reactions does not exhibit the oxidising behaviour of H2SO4?
1. Cu + 2H2SO4 → CuSO4 + SO2 + 2H2O
2. 3S + 2H2SO4 → 3SO2 + 2H2O
3. C + 2H2SO4 → CO2 + 2SO2 + 2H2O
4. CaF2 + H2SO4 → CaSO4 + 2HF
How many lone pairs of electrons are present on the central chlorine atom in the structure of ClF₃?
1. One (1)
2. Two (2)
3. Four (4)
4. Three (3)
Match the compounds given in Column-I with the shape given in Column-II and mark the correct option.
| Column-I | Column-II | ||
| A. | XeF6 | 1. | Distorted octahedral |
| B. | XeO3 | 2. | Square planar |
| C. | XeOF4 | 3. | Pyramidal |
| D. | XeF4 | 4. | Square pyramidal |
| 1. | A-1, B-2, C-4, D-3 | 2. | A-4, B-3, C-1, D-2 |
| 3. | A-4, B-1, C-2, D-3 | 4. | A-1, B-3, C-4, D-2 |
| 1. | Phosphinic acid is a monoprotic acid while phosphonic acid is a diprotic acid |
| 2. | Phosphinic acid is a diprotic acid while phosphonic acid is a monoprotic acid |
| 3. | Both are triprotic acids |
| 4. | Both are diprotic acids |
Which of the statements given below is incorrect?
1. \(\mathrm{C l_{2} O_{7 }}\)is an anhydride of perchloric acid
2. \(\mathrm{O_{3}}\) molecule is bent
3. ONF is isoelectronic with \(\mathrm{N O_{2}^{-}}\)
4. \(\mathrm{O F_{2}}\) is an oxide of fluorine
The variation of the boiling point of the hydrogen halides is in the order HF > HI > HBr > HCl.
The higher boiling point of hydrogen fluoride is explained as:
| 1. | The electronegativity of flourine is much higher than other elements in group |
| 2. | There is strong hydrogen bonding between HF molecules |
| 3. | The bond energy of HF molecules is greater than in other hydrogen halides |
| 4. | The effect of nuclear shielding is much reduced in flourine which polarizes the HF molecule |