Inorganic Chemistry PYQ — Page 22

The pair from the following pairs having both compounds with net non-zero dipole moment is

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The first ionization enthalpy of $3d$ series elements is more than that of group $2$ metals Reason (R): In $3d$ series of elements successive filling of $d$-orbitals takes place. In the light of the above statements, choose the correct answer from the options given below:

The correct group of halide ions which can be oxidised by oxygen in acidic medium is

The incorrect statement regarding the reaction given below is 

“$A$” obtained by Ostwald's method involving air oxidation of ${\mathrm{NH}}_{3}$, upon further air oxidation produces “$B$”. “$B$” on hydration forms an oxoacid of Nitrogen along with evolution of “$A$”. The oxoacid also produces “$A$” and gives positive brown ring test

An ammoniacal metal salt solution gives a brilliant red precipitate on addition of dimethylglyoxime. The metal ion is :

Which one of the following elements will remain as liquid inside pure boiling water?

Which of the following elements have half-filled f-orbitals in their ground state ? (Given : atomic number $\mathrm{Sm}-62;\mathrm{Eu}=63;\mathrm{Tb}=65;\mathrm{Gd}=64,\mathrm{Pm}=61$) Choose the correct answer from the options given below :

${K}_{2}{\mathrm{Cr}}_{2}{O}_{7}$ paper acidified with dilute ${H}_{2}{\mathrm{SO}}_{4}$ turns green when exposed to

During the qualitative analysis of ${\mathrm{SO}}_{3}^{2-}$ using dilute ${H}_{2}{\mathrm{SO}}_{4},{\mathrm{SO}}_{2}$ gas is evolved which turns ${K}_{2}{\mathrm{Cr}}_{2}{O}_{7}$ solution (acidified with dilute ${H}_{2}{\mathrm{SO}}_{4}$):

In an ice crystal, each water molecule is hydrogen bonded to _____ neighbouring molecules.

The number of bent-shaped molecule/s from the following is ______ ${N}_{3}^{-},{\mathrm{NO}}_{2}^{-},{I}_{3}^{-},{O}_{3},{\mathrm{SO}}_{2}$

When ${\mathrm{Cu}}^{2+}$ ion is treated with $\mathrm{KI}$, a white precipitate, $X$ appears in solution. The solution is titrated with sodium thiosulphate, the compound $Y$ is formed. $X$ and $Y$ respectively are

The ratio of sigma and $\pi$ bonds present in pyrophosphoric acid is

Match List - I with List - II <table class="pyq-table"><tbody><tr><td colspan="2" rowspan="1">LIST-I (Atomic number)</td><td colspan="2" rowspan="1">LIST-II (Block of periodic table)</td></tr><tr><td>(A)</td><td>$37$</td><td>I.</td><td>$p$-block</td></tr><tr><td>(B)</td><td>$78$</td><td>II.</td><td>$d$-block</td></tr><tr><td>(C)</td><td>$52$</td><td>III.</td><td>$f$-block</td></tr><tr><td>(D)</td><td>$65$</td><td>IV.</td><td>$s$-block</td></tr></tbody></table>Choose the correct answer from the options given below:

Given below are two statements : Statement-I : Methane and steam passed over a heated $\mathrm{Ni}$ catalyst produces hydrogen gas. Statement-II : Sodium nitrite reacts with ${\mathrm{NH}}_{4}\mathrm{Cl}$ to give ${H}_{2}O,{N}_{2}$ and $\mathrm{NaCl}$. In the light of the above statements, choose the most appropriate answer from the options given below :

Prolonged heating is avoided during the preparation of ferrous ammonium sulphate to

Match List-I with List-II<table class="pyq-table"><tbody><tr><td></td><td>LIST-I Coordination Complex</td><td></td><td>LIST-II Number of unpaired electrons</td></tr><tr><td>A.</td><td>${[\mathrm{Cr}(\mathrm{CN}{)}_{6}]}^{3-}$</td><td>I.</td><td>0</td></tr><tr><td>B.</td><td>${[\mathrm{Fe}{({H}_{2}O)}_{6}]}^{2+}$</td><td>II.</td><td>3</td></tr><tr><td>C.</td><td>${[\mathrm{Co}{({\mathrm{NH}}_{3})}_{6}]}^{3+}$</td><td>III.</td><td>2</td></tr><tr><td>D.</td><td>${[\mathrm{Ni}{({\mathrm{NH}}_{3})}_{6}]}^{2+}$</td><td>IV.</td><td>4</td></tr></tbody></table>Choose the correct answer from the options given below:

Which of the following statements are not correct? A. The electron gain enthalpy of $F$ is more negative than that of $\mathrm{Cl}.$ B. Ionization enthalpy decreases in a group of periodic table. C. The electronegativity of an atom depends upon the atoms bonded to it. D. ${\mathrm{Al}}_{2}{O}_{3}$ and $\mathrm{NO}$ are examples of amphoteric oxides. Choose the most appropriate answer from the options given below:

In the wet tests for detection of various cations by precipitation, ${\mathrm{Ba}}^{2+}$ cations are detected by obtaining precipitate of

If the CFSE of ${[\mathrm{Ti}{({H}_{2}O)}_{6}]}^{3+}$ is $-96.0\mathrm{kJ}/\mathrm{mol}$, this complex will absorb maximum at wavelength $\mathrm{nm}$. (nearest integer) Assume Planck' constant $(h)=6.4\times {10}^{-34}\mathrm{Js}$, Speed of light $(c)=3.0\times {10}^{8}m/s$ and Avogadro's constant $({N}_{A})=6\times {10}^{23}/\mathrm{mol}$.

If the formula of Borax is ${\mathrm{Na}}_{2}{B}_{4}{O}_{x}(\mathrm{OH}{)}_{y}\cdot {\mathrm{zH}}_{2}O$, then $x+y+z=______$

The oxidation sate of phosphorus in hypophosphoric acid is

The hybridization and magnetic behaviour of cobalt ion in $[\mathrm{Co}({\mathrm{NH}}_{3}{)}_{6}{]}^{3+}$ complex, respectively is