In the preparation of compounds of Xe, Bartlett had taken ${\mathrm{O}}_2^{+}{\mathrm{PtF}}_6^{-}$ as a base compound. This is because-

1.	Both O2 and Xe have the same size.
2.	Both O2  and Xe have the same electron gain enthalpy.
3.	Both O2 and Xe have almost the same ionisation enthalpy.
4.	Both Xe and O2 are gases.

In solid-state, PCl₅ exists as: 

Reduction potentials of some ions are given below. Arrange them in decreasing order of oxidising power.

$1. {\mathrm{ClO}}_4^{-} > {\mathrm{IO}}_4^{-} > {\mathrm{BrO}}_4^{-}$
$2. {\mathrm{IO}}_4^{-} > {\mathrm{BrO}}_4^{-} > {\mathrm{ClO}}_4^{-}$
$3. {\mathrm{BrO}}_4^{-} > {\mathrm{IO}}_4^{-} > {\mathrm{ClO}}_4^{-}$
$4. {\mathrm{BrO}}_4^{-} > {\mathrm{ClO}}_4^{-} > {\mathrm{IO}}_4^{-}$

Which of the following is isoelectronic pair?

1. ${\mathrm{ICl}}_2$ , ${\mathrm{ClO}}_2$

2. ${\mathrm{BrO}}_2^{-}$ , ${\mathrm{BrF}}_2^{+}$

3. ${\mathrm{ClO}}_2$ , $\mathrm{BrF}$

4. ${\mathrm{CN}}^{-}$ , ${\mathrm{O}}_3$

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?

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?

1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)