List of top Chemistry Questions on Inorganic chemistry

Given below are some of the statements about Mn and \( Mn_2O_7 \). Identify the correct statements.
A. Mn forms the oxide \( Mn_2O_7 \), in which Mn is in its highest oxidation state.
B. Oxygen stabilizes the Mn in higher oxidation states by forming multiple bonds with Mn.
C. \( Mn_2O_7 \) is an ionic oxide.
D. The structure of \( Mn_2O_7 \) consists of one bridged oxygen.
Choose the correct answer from the options given below :
In \( PO_4^{3-} \), the formal charge on each oxygen atom and the P - O bond order respectively are
Match columns:
Consider the statements related to group 15 hydrides.
(A) Stability of hydrides decreases down the group.
(B) Reducing nature of hydrides increases down the group.
(C) Lone pair donating tendency increases down the group.
(D) H–E–H bond angle decreases down the group.
Statement I: d-Block elements utilize their only 3d electrons for bonding on the surface of catalyst.
Statement II: This leads to strengthening of bonds in the reacting molecules.
Match List - I with List - II.
Choose the correct answer from the options given below :
Consider \(|x|\) is the difference in oxidation states of Mn in highest manganese fluoride and highest manganese oxide. The ions with \(|x|\) number of unpaired electrons from the following are:
A. \(Sc^{3+}\)
B. \(Zn^{2+}\)
C. \(V^{2+}\)
D. \(Fe^{2+}\)
E. \(Co^{2+}\)
Choose the correct answer from the options given below:
Match the LIST-I with LIST-II
Match the column-I with column-II Column-I & & Column-II
(A) Aniline & & (P) Hinsberg reagent
(B) Benzaldehyde & & (Q) Tollen's reagent
(C) Phenol & & (R) Lucas reagent
(D) Isopropanol & & (S) Phthalein dye test
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Styrene undergoes the following sequence of reactions Molar mass of product (P) is:

If \(|x|\) represents the difference in maximum oxidation state possible for Mn in its oxide and in its fluoride. Among the following ions, which ions contain unpaired electrons equal to \(|x|\). (A) \(Zn^{2+}\) (B) \(Fe^{2+}\) (C) \(Co^{2+}\) (D) \(V^{2+}\) (E) \(Sc^{3+}\)
Consider the following complex compounds (A) \([Ni(NH_3)_6]^{2+}\) (B) \([NiCl_4]^{2-}\) (C) \([Ni(en)_3]^{2+}\) The number of unpaired electrons in A, B and C respectively and order of frequency of absorbed radiation among A, B and C is:
Which of the following ion forms a precipitate on addition of \(NH_4OH\) and \(H_2S\)?
Consider the following elements. Hf \([Z = 72]\) ; Yb \([Z = 70]\) ; Lu \([Z = 71]\) Gd \([Z = 64]\) ; Eu \([Z = 63]\) ; Tm \([Z = 69]\) Dy \([Z = 66]\) ; Er \([Z = 68]\) A : [Hf, Yb] B : [Gd, Eu] C : [Lu, Tm] D : [Er, Dy] The pair which contains same number of \(f\) electrons.
Element ‘M’ of group 13 has same electronegativity as Ge. Consider the statements (A) \(M^{3+}\) is good oxidizing agent (B) \(M^{3+}\) is good reducing agent (C) \(E^\circ_{M^{3+}/M} > 0\) (D) \(M^{3+}\) is more stable than \(M^{+}\) Which of the following is correct?
Compare the C–O bond length in the following compounds (a) \(CH_3{-}CO{-}CH_3\) (b) Benzaldehyde type structure (c) \(CH_3{-}COO^{-}\) Compare C–O bond length.

Which of the following compound has most stable conjugate acid? 

Column-I 

Column-II

(i) Friedel craft reaction

(P) Electrophilic substitution

(ii) Williamson’s ether synthesis

(Q) Nucleophilic substitution

(iii) Chlorination of alkane in presence of sunlight

(R) Free radical substitution

(iv) \(Br_2/\text{CHCl}_3\)

(S) Electrophilic addition

Product of D-aldotetroses with conc. \(HNO_3\) gives optically inactive dicarboxylic acid. Which among the following will be D-Aldotetrose in the given structures? 

Compare acidic strength of the following compounds:
 (I) Phenol (II) \(p\)-Nitrophenol (III) \(p\)-Methylphenol (IV) \(p\)-Nitrobenzoic acid (V) Benzoic acid

Relationship between following pair of compounds?

Match disease with the deficiency.
Consider the statements
(A) In Zeigler-Natta catalyst, d-block central metal ion has spin magnetic moment of 2.84 BM.
(B) In Zeigler-Natta catalyst, p-block element has +3 oxidation state.
(C) Basic vanadium oxide is used in the production of \( \text{H}_2\text{SO}_4 \).
(D) Catalyst used in Wacker's process has central metal with \(d^8\) configuration.
Which of the following pair of species have different Lewis structures? (A) \( \mathrm{SO_3^{2-}, CO_3^{2-}} \)
(B) \( \mathrm{O_2^{2-}, F_2} \)
(C) \( \mathrm{CN^- , CO} \)
(D) \( \mathrm{NH_3, H_3O^+} \)
(E) \( \mathrm{MnO_4^- , CrO_4^{2-}} \)
Statement-I: Al is more electropositive than Tl because \( E^\circ_{\mathrm{Al^{3+}/Al}} \) is negative and \( E^\circ_{\mathrm{Tl^{3+}/Tl}} \) is positive.
Statement-II: For B atom, the sum of the first three ionization energies is very high, thus it forms covalent compounds.