Inorganic Chemistry - Chemistry Previous Year Questions

Match List-I with List-II:

List-I (Element-Atomic number)		List-II (Position in periodic table)
(a)	Ra – 88	(i)	$4^{th}$ period, $13^{th}$ group
(b)	Ga – 31	(ii)	$6^{th}$ period, $6^{th}$ group
(c)	W – 74	(iii)	$5^{th}$ period, $10^{th}$ group
(d)	Pd – 46	(iv)	$7^{th}$ period, $2^{nd}$ group

Choose the correct answer from the options given below.

In which of the following option/options, the order of arrangement does not agree with the variation of property indicated against it?
(a) $\text{BF}_3 > \text{NF}_3 > \text{NH}_3$ (Dipole moment)
(b) $\text{HgCl}_2 > \text{NH}_4^+ > \text{SF}_6$ (Bond angle)
(c) $\text{NH}_3 < \text{H}_2\text{O} < \text{HF}$ (Strength of intermolecular hydrogen bonding)
(d) $\text{H}-\text{I} > \text{H}-\text{Br} > \text{H}-\text{Cl}$ (Bond length)

The calculated spin only magnetic moment of $\text{Cr}^{2+}$ ion is

When salt BA is treated with Conc. $\text{H}_2\text{SO}_4$ reddish brown gas is liberated. The aqueous solution of BA gives pale yellow precipitate with $\text{AgNO}_3$ solution. Which of the following anion ($\text{A}^-$) is present in the salt BA?

Given below are two statements:
Statement-I: The $\text{M}-\text{C}$ $\sigma$ bond is formed by the donation of lone pair of electrons on the carbonyl carbon into a vacant d-orbital of the metal.
Statement-II: The $\text{M}-\text{C}$ $\pi$ bond is formed by the donation of a pair of electrons from a filled d-orbital of metal into the vacant antibonding $\pi^*$ orbital of carbon monoxide.
In the light of the above statements, choose the correct answer from the options given below:

The types of hybrid orbitals of nitrogen in $\text{NO}_2^+, \text{NO}_3^-$ and $\text{NH}_4^+$ respectively are