List of top Chemistry Questions on Inorganic chemistry asked in JEE Main

Statement-I : The electronegativity order in F, O, N is \(F > O > N\).
Statement-II : Oxidation state of O in \(OF_2\) is \(+2\) and in \(Na_2O\) is \(-2\). Choose the correct option.
From the following, number of compounds with \(sp^3d\) hybridisation are: \[ XeF_4,\; ICl_4^-,\; ICl_2^-,\; XeF_5^-,\; SF_4,\; XeF_2,\; ClF_3,\; BrF_5,\; NH_4^+ \]
Which of the following property about Interstitial compound is INCORRECT?
Statement I : Sodium and Potassium dichromate are used as a primary standard in redox titrations.
Statement II : Phenolphthalein is weakly basic in nature hence it dissociates in acidic medium.
Consider the following statements (A) Ground state electronic configuration of Cr is \([Ar]\,4s^1 3d^5\)
(B) Size of \(2p_x\) orbital is smaller than \(3p_y\)
(C) Heisenberg uncertainty principle is applicable only for electron.
(D) (Energy of \(2s\))$_{Hydrogen}$ = (Energy of \(2s\))$_{Lithium}$
The correct statements are
Consider the statements. (A) \( \text{N} - \text{N} > \text{P} - \text{P} \) (Bond energy of single bond)
(B) All oxidation states of N lying between \(+1\) and \(+4\) tend to disproportionate in acidic medium.
(C) Maximum covalency of nitrogen is 4
(D) Nitrogen can form \(d\pi - p\pi\) bond with itself and other elements.
(E) Nitrogen has maximum density in its group due to its small size
The incorrect statements are:
Statement I : BP order is HI<HBr<HCl<HF.
Statement II : MP order is HI<HF<HCl<HBr.
The correct set that contains all kinds of oxides (Basic, acidic, amphoteric, and neutral) is:
Statement-I : The correct increasing order of bond length among the following is $O_2^+ < O_2 < O_2^- < O_2^{2-}$.
Statement-II : The correct order of number of unpaired electrons is $O_2^{2-} < O_2^+ < O_2^- < O_2$.
Statement-I : The correct order of Ionization energy is $Na > Mg > Al > Ar$
Statement-II : Among the following elements $Sc, Ca$ and $Mg, Ca$ has highest $3^{rd}$ Ionisation Energy.
Cation of salt A when treated in flame gives apple green colour. When salt A is heated with Chromate solution gives yellow precipitate & when salt is heated with conc $HNO_3$ & Ammionium molybdate it gives canary yellow ppt. Salt A contains :
Given $K_{SP}(Ag_2C_2O_4) = 32X$, $K_{SP}(AgBr) = 4Y$. Find ratio of solubility of the given salts in pure water
In the following reaction, \[ {MnO4^{2-} \xrightarrow{H^+} \, ?} \] Manganate ion undergoes disproportionation to form:
Statement-I : \(\mathrm{KMnO_4}\) is a good reducing agent.
Statement-II : \(\mathrm{KMnO_4}\) reduces nitrite, oxalate and iodide ions.
On heating a mixture of common salt and \( K_2Cr_2O_7 \) in equal amount along with concentrated \( H_2SO_4 \) in a test tube, a gas is evolved. Formula of the gas evolved and oxidation state of the central metal atom in the gas respectively are :
Given below are two statements :
Statement I : The correct order in terms of atomic/ionic radii is \( Al>Mg>Mg^{2+}>Al^{3+} \).
Statement II : The correct order in terms of the magnitude of electron gain enthalpy is \( Cl>Br>S>O \).
In the light of the above statements, choose the correct answer from the options given below :
Consider the following statements:

[(A)] \(\mathrm{KMnO_4}\) is diamagnetic while \(\mathrm{K_2MnO_4}\) is paramagnetic.
[(B)] Manganate ion contains \(\mathrm{Mn^{6+}}\) while permanganate ion contains \(\mathrm{Mn^{7+}}\).
[(C)] \(\mathrm{Mn^{2+}}\) ion on reaction with \(\mathrm{S_2O_8^{2-}}\) ions gives manganate ion.
[(D)] Both \(\mathrm{MnO_4^-}\) and \(\mathrm{MnO_4^{2-}}\) are tetrahedral.
Correct statements are:

Given below are two statements: 
Statement I: All the pairs of molecules \((\mathrm{PbO}, \mathrm{PbO_2}); (\mathrm{SnO}, \mathrm{SnO_2})\) and \((\mathrm{GeO}, \mathrm{GeO_2})\) contain amphoteric oxides. 
Statement II: \(\mathrm{AlCl_3}, \mathrm{BH_3}, \mathrm{BeH_2}\) and \(\mathrm{NO_2}\) all have incomplete octet. 
In the light of the above statements, choose the correct option.

Lanthanoid ions with \(4f^7\) configuration are: (A) Eu\(^{2+}\) (B) Gd\(^{3+}\) (C) Eu\(^{3+}\) (D) Tb\(^{3+}\) (E) Sm\(^{2+}\) Choose the correct answer from the options given below:

Nature of compounds TeO₂ and TeH₂ is___________ and ______________respectively.

The correct statements from the following are :
(A) $ Tl^{3+} $ is a powerful oxidising agent
(B) $ Al^{3+} $ does not get reduced easily
(C) Both $ Al^{3+} $ and $ Tl^{3+} $ are very stable in solution
(D) $ Tl^+ $ is more stable than $ Tl^{3+} $
(E) $ Al^{3+} $ and $ Tl^+ $ are highly stable
Choose the correct answer from the options given below :
'X' is the number of acidic oxides among $ VO_2, V_2O_3, CrO_3, V_2O_5 $ and $ Mn_2O_7 $. The primary valency of cobalt in $ [Co(H_2NCH_2CH_2NH_2)_3]_2 (SO_4)_3 $ is Y. The value of X + Y is :

Consider the following reaction:

\[ A + NaCl + H_2SO_4 \xrightarrow[\text{Little amount}]{} CrO_2Cl_2 + \text{Side products} \] \[ CrO_2Cl_2(\text{Vapour}) + NaOH \rightarrow B + NaCl + H_2O \] \[ B + H^+ \rightarrow C + H_2O \]

The number of terminal 'O' present in the compound 'C' is ________.

Identify the inorganic sulphides that are yellow in colour: (A) \( ({NH}_4)_2{S} \)
(B) \( {PbS} \)
(C) \( {CuS} \)
(D) \( {As}_2{S}_3 \)
(E) \( {As}_2{S}_5 \)
Choose the correct answer from the options given below:
The difference in the 'spin-only' magnetic moment values of \( \text{KMnO}_4 \) and the manganese product formed during titration of \( \text{KMnO}_4 \) against oxalic acid in acidic medium is ______ BM (nearest integer).