When neutral or faintly alkaline $KMn{O}_4$ is treated with potassium iodide, iodide ion is converted into 'X'. 'X' is:

1. $I_2$

2. $I{O}_4^{-}$

3. $I{O}_3^{-}$

4. $I{O}^{-}$

The crystal field stabilization energy (CFSE) for [CoCl₆]^4– is 18000 cm^–1.
The CFSE for [CoCl₄]^2–  will be:

Limiting molar conductivities, for the given solutions, are:

\(\lambda_{m}^{0} \left(\right. H_{2} S O_{4} \left.\right) = x\) \(S  c m^{2}\) \(m o l^{- 1}\)

\(\lambda_{m}^{0} \left(\right. K_{2} S O_{4} \left.\right) = y\) \(S  c m^{2}\) \(m o l^{- 1}\)

\(\lambda_{m}^{0} \left(\right. C H_{3} C O O K \left.\right) = z\) \(S  c m^{2}\) \(m o l^{- 1}\)

From the data given above, it can be concluded that \(\lambda_m^0 \) in (\(S\ cm^2\ mol^{-1}\)) for CH₃COOH will be:

A first-order reaction has a rate constant of 2.303 × 10¯³ s¯¹. The time required for 40 g of this reactant to reduce to 10 g will be
[Given that ${\log }_{10}2=0.3010$]

For a reaction, the activation energy is zero, and the rate constant at 200 K is 1.6 × 10⁶ s⁻¹.
Find the rate constant at 400 K.

Given: R = 8.314 J K⁻¹ mol⁻¹.

The equation that represents a Freundlich adsorption isotherm is: 

1. $\frac{x}{m}=k{p}^{0.3}$

2. $\frac{x}{m}=k{p}^{2.5}$

3. $\frac{x}{m}=k{p}^{-0.5}$

4. $\frac{x}{m}=k{p}^{-1}$

Which of the following is a paramagnetic compound?

1. ${\mathrm{N}}_2$

2. ${\mathrm{H}}_2$

3. ${\mathrm{Li}}_2$

4. ${\mathrm{O}}_2$

Find the correct increasing order of dipole moment among the following molecules:

Crude sodium chloride obtained by crystallization of brine solution does not contain-

1. $MgS{O}_4$

2. $N{a}_{2}S{O}_4$

3. $MgC{l}_2$

4. $CaS{O}_4$

Which of the alkali metal chloride (MCl) forms its dehydrate  (MCl.$2H_{2}O$) easily?

1. LiCl

2. CsCl

3. RbCl

4. KCl