Inorganic Chemistry PYQ — Page 28

The sum of number of lone pairs of electrons present on the central atoms of ${\mathrm{XeO}}_{3},{\mathrm{XeOF}}_{4}$ and ${\mathrm{XeF}}_{6}$ is

The correct decreasing order for metallic character is

The metal that has very low melting point and its periodic position is closer to a metalloid is

Which of the following is a metalloid?

The correct order of ionic size of ${N}^{3-},{\mathrm{Na}}^{+},{F}^{-},{\mathrm{Mg}}^{2+}$ and ${O}^{2-}$ is :

Consider the species ${\mathrm{CH}}_{4},{\mathrm{NH}}_{4}^{+}$ and ${\mathrm{BH}}_{4}^{-}$. Choose the correct option with respect to the there species:

The number of molecule(s) or ion(s) from the following having non-planar structure is______. ${\mathrm{NO}}_{3}^{-},{H}_{2}{O}_{2},{\mathrm{BF}}_{3},{\mathrm{PCl}}_{3},{\mathrm{XeF}}_{4}$, ${\mathrm{SF}}_{4},{\mathrm{XeO}}_{3},{\mathrm{PH}}_{4}^{+},{\mathrm{SO}}_{3},{[\mathrm{Al}{(\mathrm{OH})}_{4}]}^{-}$

Match List I with List II <table class="pyq-table"><tbody><tr><td></td><td>List-I</td><td></td><td>List-II</td></tr><tr><td>A</td><td>${\mathrm{XeO}}_{3}$</td><td>I</td><td>${\mathrm{sp}}^{3}d$; linear</td></tr><tr><td>B</td><td>${\mathrm{XeF}}_{2}$</td><td>II</td><td>${\mathrm{sp}}^{3}$; pyramidal</td></tr><tr><td>C</td><td>${\mathrm{XeOF}}_{4}$</td><td>III</td><td>${\mathrm{sp}}^{3}{d}^{3}$; distorted octahedral</td></tr><tr><td>D</td><td>${\mathrm{XeF}}_{6}$</td><td>IV</td><td>${\mathrm{sp}}^{3}{d}^{2}$; square pyramidal</td></tr></tbody></table>Choose the correct answer from the options given below

Identify the incorrect statement for ${\mathrm{PCl}}_{5}$ from the following.

The correct order of bond orders of ${C}_{2}^{2-},{N}_{2}^{2-}$ and ${O}_{2}^{2-}$ is

Number of lone pairs of electrons in the central atom of ${\mathrm{SCl}}_{2},{O}_{3},{\mathrm{ClF}}_{3}$ and ${\mathrm{SF}}_{6}$, respectively, are

(a) ${\mathrm{CoCl}}_{3}.4{\mathrm{NH}}_{3}$, (b) ${\mathrm{CoCl}}_{3}\cdot 5{\mathrm{NH}}_{3}$, (c) ${\mathrm{CoCl}}_{3}\cdot 6{\mathrm{NH}}_{3}$ and (d) $\mathrm{CoCl}{({\mathrm{NO}}_{3})}_{2}\cdot 5{\mathrm{NH}}_{3}$ Number of complex(es) which will exist in cis-trans form is/are

The oxidation state of manganese in the product obtained in a reaction of potassium permanganate and hydrogen peroxide in basic medium is

When borax is heated with $\mathrm{CoO}$ on a platinum loop, blue coloured bead formed is largely due to

Match List - I with List - II. <table class="pyq-table"><tbody><tr><td></td><td>List-I ($\mathrm{Si}$-Compounds)</td><td></td><td>List-II ($\mathrm{Si}$-Polymeric/Other Products)</td></tr><tr><td>A</td><td>${({\mathrm{CH}}_{3})}_{4}\mathrm{Si}$</td><td>I</td><td>Chain Silicone</td></tr><tr><td>B</td><td>$({\mathrm{CH}}_{3})\mathrm{Si}{(\mathrm{OH})}_{3}$</td><td>II</td><td>Dimeric Silicone</td></tr><tr><td>C</td><td>${({\mathrm{CH}}_{3})}_{2}\mathrm{Si}{(\mathrm{OH})}_{2}$</td><td>III</td><td>Silane</td></tr><tr><td>D</td><td>${({\mathrm{CH}}_{3})}_{3}\mathrm{Si}(\mathrm{OH})$</td><td>IV</td><td>$2D$- Silicone</td></tr></tbody></table>Choose the correct answer from the options given below

Identify the correct statement for ${B}_{2}{H}_{6}$ from those given below. (A) In ${B}_{2}{H}_{6}$, all $B-H$ bonds are equivalent. (B) In ${B}_{2}{H}_{6}$, there are four $3$-centre- $2$-electron bonds. (C) ${B}_{2}{H}_{6}$ is a Lewis acid. (D) ${B}_{2}{H}_{6}$ can be synthesized from both ${\mathrm{BF}}_{3}$ and ${\mathrm{NaBH}}_{4}$. (E) ${B}_{2}{H}_{6}$ is a planar molecule. Choose the most appropriate answer from the options given below :

The correct order of increasing intermolecular hydrogen bond strength is

In following pairs, the one in which both transition metal ions are colourless is

The '$f$' orbitals are half and completely filled, respectively in lanthanide ions [Given : Atomic no. $\mathrm{Eu},63:\mathrm{Sm},62:\mathrm{Tm},69;\mathrm{Tb},65;\mathrm{Yb},70;\mathrm{Dy},66$]

Number of electron deficient molecules among the following ${\mathrm{PH}}_{3},{B}_{2}{H}_{6},{\mathrm{CCl}}_{4},{\mathrm{NH}}_{3},\mathrm{LiH}$ and ${\mathrm{BCl}}_{3}$ is

Consider the following reaction : $2{\mathrm{HSO}}_{4}^{-}(\mathrm{aq})\frac{(1)\mathrm{Electrolysis}}{(2)\mathrm{Hydrolysis}}2{\mathrm{HSO}}_{4}^{-}+2{H}^{+}+A$ The dihedral angle in product $A$ in its solid phase at $110K$ is

The hybridization of $P$ exhibited in ${\mathrm{PF}}_{5}$ is ${\mathrm{sp}}^{x}{d}^{y}$. The value of $y$ is

${[\mathrm{Fe}{(\mathrm{CN})}_{6}]}^{3-}$ should be an inner orbital complex. Ignoring the pairing energy, the value of crystal field stabilization energy for this complex is $(-)$_____${\Delta }_{0}$.

The spin-only magnetic moment value of the most basic oxide of vanadium among ${V}_{2}{O}_{3}$' ${V}_{2}{O}_{4}$ and ${V}_{2}{O}_{5}$ is____B.M. (Nearest integer)