NEET UG 2022 — Inorganic Chemistry

Flourine is a stronger oxidising agent than chlorine because : (a) F-F bond has a low enthalpy of dissociation. (b) Flouride ion $\left(\mathrm{F}^{-}\right)$has high hydration enthalpy (c) Electron gain enthalpy of flourine is less negative than chlorine. (d) Flourine has a very small size. Choose the most appropriate answer from the options given :

The coordination number of Na⁺ in NaCl crystal is

What is the hybridization shown by $\mathrm{C}_1$ and $\mathrm{C}_2$ carbons, respectively in the given compound? $\mathrm{OHC}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_2 \mathrm{COOCH}_3$

Decrease in size from left to right in actinoid series is greater and gradual than that in lanthanoid series due to:

Match List-I with List-II : \(\begin{array}{l|l} \text { List - I } & \text { List - II } \\ \text { (Molecules) } & \text { Shape } \\ \hline \text { (a) } \mathrm{NH}_3 & \text { (i) Square pyramidal } \\ \text { (b) } \mathrm{ClF}_3 & \text { (ii) Trigonal bipyramidal } \\ \text { (c) } \mathrm{PCl}_5 & \text { (iii) Trigonal pyramidal } \\ \text { (d) } \mathrm{BrF}_5 & \text { (iv) T-shape } \end{array}\) Choose the correct answer from the options given below :

The IUPAC name of the complex - $[\mathrm{Ag}{({H}_{2}O)}_{2}][\mathrm{Ag}{(\mathrm{CN})}_{2}]$ is

Amongst the following which one will have maximum 'lone pair - lone pair' electron repulsions?

The decreasing order of boiling points of the following alkanes is: (a) Heptane (b) butane (c) 2-methylbutane (d) 2-methylpropane (e) hexane Choose the correct answer from the options given below:

Which of the following reactions is a part of the large scale industrial preparation of nitric acid?

Given below are two statements: Statement I: The boiling points of the following hydrides of group $16$ elements increases in the order - ${H}_{2}O<{H}_{2}S<{H}_{2}\mathrm{Se}<{H}_{2}\mathrm{Te}$. Statement II: The boiling points of these hydrides increase with increase in molar mass. In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The metal carbon bond in metal carbonyls possesses both $\sigma$ and $\pi$ character. Reason (R): The ligand to metal bond is a $\pi$ bond and metal to ligand bond is a $\sigma$ bond. In the light of the above statements, choose the most appropriate answer from the options given below:

Choose the correct statement:

The correct order of first ionization enthalpy for the given four element is :

Which amongst the following is incorrect statement?

The correct order of bond angles in the following compounds/species is :

If first ionization enthalpies of element $X$ and $Y$ are $419 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and $590 \mathrm{~kJ} \mathrm{~mol}^{-1}$, respectively and second ionization enthalpies of $\mathrm{X}$ and $\mathrm{Y}$ are 3069 $\mathrm{kJ} \mathrm{mol}^{-1}$ and $1145 \mathrm{~kJ} \mathrm{~mol}^{-1}$, respectively. Then correct statement is :

Given below are two statements: Statement $I$: The boiling points of aldehydes and ketones are higher than hydrocarbons of comparable molecular masses because of weak molecular association in aldehydes and ketones due to dipole - dipole interactions. Statement $\mathrm{II}$: The boiling points of aldehydes and ketones are lower than the alcohols of similar molecular masses due to the absence of $H$-bonding. In the light of the above statements, choose the most appropriate answer from the options given below :

The order of energy absorbed which is responsible for the color of complexes (A) ${[\mathrm{Ni}{({H}_{2}O)}_{2}(\mathrm{en}{)}_{2}]}^{2+}$ (B) ${[\mathrm{Ni}{({H}_{2}O)}_{4}(\mathrm{en})]}^{2+}$ and (C) ${[\mathrm{Ni}{(\mathrm{en})}_{3}]}^{2+}$ is

Given below are two statements : one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$. Assertion $(A)$: $\mathrm{ICl}$ is more reactive than ${I}_{2}$. Reason $(R)$: $I-\mathrm{Cl}$ bond is weaker than $I-I$ bond. In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements: Statement I: $\mathrm{Cr}^{2+}$ is oxidising and $\mathrm{Mn}^{3+}$ is reducing in nature. Statement II: $\mathrm{Sc}^{3+}$ compounds are repelled by the applied magnetic field. In the light of the above statements, choose the most appropriate answer from the options given below:

Gadolinium has a low value of third ionisation enthalpy because of

The IUPAC name of an element with atomic number $119$ is

Which of the following statement is not correct about diborane?

In the neutral or faintly alkaline medium, ${\mathrm{KMnO}}_{4}$ oxidises iodide into iodate. The change in oxidation state of manganese in this reaction is from

$\mathrm{Na}_2 \mathrm{~B}_4 \mathrm{O}_7 \stackrel{\text { heat }}{\longrightarrow} \mathrm{X}+\mathrm{NaBO}_2$ in the above reaction the product " $\mathrm{X}$ " is :