Q. No.With respect to halogens, four statements are given below
(I) The bond dissociation energies for halogens are in the order:
(II) The only oxidation state is —1
(III) The amount of energy required for the excitation of electrons to the first excited state decreases progressively as we move from F to l
(IV) They form species in their aqueous solutions (X = halogen)
The correct statements are
1. I, II, IV
2. I, III, IV
3. II, III, IV
4. I, III
Match the items of Columns I and II and mark the correct option.
Column I Column II
(A) H2SO4 (i) Highest electron gain enthalpy
(B) CCl3NO2 (ii) Chalcogen
(C) Cl2 (iii) Tear gas
(D) Sulphur (iv) Storage batteries
(1) A(iv) B(iii) C(i) D(ii)
(2) A(iii) B(iv) C(i) D(ii)
(3) A(iv) B(i) C(ii) D(iii)
(4) A(ii) B(i) C(iii) D(iv)
| Assertion (A): | R3P = O exists but R3N = O does not (R = alkyl group). |
| Reason (R): | Nitrogen doesn't have d orbitals. |
| 1. | (A) is true and (R) is the correct explanation of (A). |
| 2. | (A) is true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false |
Match the formulas of oxides given in Column I with the type of oxide given in Column II and mark the correct option.
| Column I | Column II |
| A. Pb3O4 | 1. Neutral oxide |
| B. N2O | 2. Acidic oxide |
| C. Mn2O7 | 3. Basic oxide |
| D. Bi2O3 | 4. Mixed oxide |
Codes
| A | B | C | D | |
| 1. | 1 | 2 | 3 | 4 |
| 2. | 4 | 1 | 2 | 3 |
| 3. | 3 | 2 | 4 | 1 |
| 4. | 4 | 3 | 1 | 2 |
Which of the following statements are correct?
| a. | Among halogens, the radius ratio between iodine and fluorine is maximum. |
| b. | Leaving F — F bond, all halogens have weaker X — X bond than X — X' bond in interhalogens. |
| c. | Among interhalogen compounds a maximum number of atoms are present in iodine fluoride. |
| d. | Interhalogen compounds are more reactive than halogen compounds. |
1. (a, b, c)
2. (b, c, d)
3. (a, c, d)
4. (a, b, d)
Which of the following statements are correct for SO2 gas?
a. It acts as a bleaching agent in moist conditions.
b. Its molecule has linear geometry.
c. Its dilute solution is used as a disinfectant.
d. It can be prepared by the reaction of dilute H2SO4 with metal sulphide.
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Which of the following statements are correct?
| a. | All the three N – O bond lengths in HNO3 are equal. |
| b. | All P – Cl bond lengths in PCl5 molecule in the gaseous state are equal. |
| c. | P4 molecule in white phosphorus have angular strain therefore white phosphorus is very reactive. |
| d. | PCl5 is ionic in a solid-state in which cation is tetrahedral and the anion is octahedral. |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Which of the following statements are correct?
| a. | S — S bond is present in H2S2O6 |
| b. | In peroxosulphuric acid (H2SO5) sulphur is in +6 oxidation state |
| c. | Iron powder along with Al2O3 and K2O is used as a catalyst in the preparation of NH3 by Haber's process |
| d. | Change in enthalpy is positive for the preparation of SO3 by catalytic oxidation of SO2 |
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Which of the following statements is/are true?
| a. | Only types of interactions between particles of noble gases are due to weak dispersion forces. |
| b. | The ionization enthalpy of molecular oxygen is very close to that of xenon. |
| c. | Hydrolysis of XeF6 is a redox reaction. |
| d. | Xenon fluorides are not reactive. |
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Match the compounds given in Column I with the hybridisation and shape given in Column II and mark the correct option.
| Column I | Column II | ||
| A | XeF6 | 1. | sp3d3 distorted octahedral |
| B. | XeO3 | 2. | sp3d2 square planar |
| C. | XeOF4 | 3. | sp3 pyramidal |
| D. | XeF4 | 4. | sp3d2 square pyramidal |
Codes
| Options: | A | B | C | D |
| 1. | 1 | 3 | 4 | 2 |
| 2. | 1 | 2 | 4 | 3 |
| 3. | 4 | 3 | 1 | 2 |
| 4. | 4 | 1 | 2 | 3 |
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