Given below are statements about some molecules/ions.

Identify the CORRECT statements.

A. The dipole moment value of $\mathrm{NF}_3$ is higher than that of $\mathrm{NH}_3$.

B. The dipole moment value of $\mathrm{BeH}_2$ is zero.

C. The bond order of $\mathrm{O}_2{ }^{2-}$ and $\mathrm{F}_2$ is same.

D. The formal charge on the central oxygen atom of ozone is -1 .

E. In $\mathrm{NO}_2$, all the three atoms satisfy the octet rule, hence it is very stable.

Choose the correct answer from the options given below:

$$ \text {Arrange the following alkenes in decreasing order of stability. } $$

Choose the correct answer from the options given below:

Given below are two statements :

Statement I : Hybridisation, shape and spin only magnetic moment of $\mathrm{K}_3\left[\mathrm{Co}\left(\mathrm{CO}_3\right)_3\right]$ is $\mathrm{sp}^3 \mathrm{~d}^2$, octahedral and 4.9 BM respectively.

Statement II : Geometry, hybridisation and spin only magnetic moment values $(B M)$ of the ions $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-},\left[\mathrm{MnBr}_4\right]^{2-}$ and $\left[\mathrm{CoF}_6\right]^{3-}$ respectively are square planar, tetrahedral, octahedral; $\mathrm{dsp}^2, \mathrm{sp}^3, \mathrm{sp}^3 \mathrm{~d}^2$ and $0,5.9,4.9$.

In the light of the above statements, choose the correct answer from the options given below

A solution is prepared by dissolving 0.3 g of a non-volatile non-electrolyte solute 'A' of molar mass $60 \mathrm{~g} \mathrm{~mol}^{-1}$ and 0.9 g of a non-volatile non-electrolyte solute ' B ' of molar mass $180 \mathrm{~g} \mathrm{~mol}^{-1}$ in $100 \mathrm{~mL} \mathrm{H}_2 \mathrm{O}$ at $27^{\circ} \mathrm{C}$. Osmotic pressure of the solution will be

[Given: $\mathrm{R}=0.082 \mathrm{~L} \mathrm{~atm} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$ ]