Q. No.
If chlorine gas is passed through a hot NaOH solution, two changes are observed in the oxidation number of chlorine during the reaction. These are ......... and .............
a. 0 to +5
b. 0 to +3
c. 0 to -1
d. 0 to +1
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Which of the following options are not in accordance with the property mentioned against them?
a. F2 > Cl2 > Br2 > I2 Oxidising power
b. MI > MBr > MCI > MF lonic character of metal halide
c. F2 >Cl2 > Br2 > I2 Bond dissociation enthalpy
d. HI < HBr < HCl < HF Hydrogen-halogen bond strength
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Which of the following is correct for P4 molecule of white phosphorus?
a. It has 6 lone pairs of electrons
b. It has six P — P single bonds
c. It has three P — P single bonds
d. It has four lone pairs of electrons
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (b, d)
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 orders are correct as per the properties mentioned against each?
| Column I | Column II | ||
| (a) | As2O3 < SiO2 < P2O3 < SO2 | (i) | Acid strength. |
| (b) | AsH3 < PH3 < NH3 | (ii) | Enthalpy of vaporisation. |
| (c) | S < O < Cl < F | (iii) | More negative electron gain enthalpy. |
| (d) | H2O > H2S > H2Se > H2Te | (iv) | Thermal stability. |
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)
In which of the following reactions conc. H2SO4 is used as an oxidising reagent?
| a. | CaF2 + H2SO4 → CaSO4 + 2 HF |
| 2. | 2HI + H2SO4 → I2 + SO2 + 2H2O |
| 3. | Cu + 2H2SO4 → CuSO4 + SO2 + 2H2O |
| 4. |
Choose the correct option:
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
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