Which of the following does not give oxygen gas on heating?
(A) \(KMnO_{4}\)
(B) \(KClO_{3}\)
(c) \(Ag_{2}O\)
(D) \(Al_{2}O_{3}\)

Which of the followings are disproportionation reactions? (A) \(2O_{3} \rightarrow 3O_{2}\) (B) \(KClO_{3} \rightarrow 3KClO_{4}+KCl\) (C)\(2H_{2}O_{2}\rightarrow2H_{2}O+O_{2}\) (D) \(2KO_{2}+2H_{2}O\rightarrow4KOH+3O_{2}\)

\(KMnO_{4}\) on heating alone decomposes as (A) \(MnO_{2}\) (B) \(K_{2}MnO_{4}\) (C) \(O_{2}\) (D) All are formed

Which of the following oxides are amphoteric? (i) Tl_(2)O (ii) Al_(2)O_(3) (iii) Ga_(2)O_(3) (iv) In_(2)O_(3)

In which of the following reaction O_(2) is formed as one of the product? (A) KClO_(3)(MnO_(2))/(Delta) (B) PbS+O_(3)rarr (C) K_(2)Cr_(2)O_(7)+H_(2)SO_(4)+SO_(2)rarr (D) Na_(2)O_(2)+KMnO_(4)+H_(2)SO_(4)rarr

Balance the following equations by hit and trial method: (a) KMnO_(4) + HCl to KCl + MnCl_(2) + H_(2)O + Cl_(2) (b) H_(2)S + SO_(2) to S + H_(2)O ( c) K_(2)Cr_(2)O_(7) + H_(2)SO_(4) to K_(2)SO_(4) + Cr_(2)(SO_(4))_(2) + H_(2)O + O_(2) (d) KMnO_(4) + KOH to K_(2)MnO_(4) + O_(2) + H_(2)O (e) Mg_(3)N_(2) + H_(2)O to Mg(OH)_(2) + NH_(3) (f) Al_(4)C_(3) + H_(2)O to Al(OH)_(3) + CH_(4) (g) FeS_(2) + O_(2) to Fe_(2)O_(3) + SO_(2) (h) KMnO_(4) + H_(2)S + H_(2)SO_(4) to KHSO_(4) + MnSO_(4) + S + H_(2)O (i) C_(3)H_(8)(g) + O_(2)(g) to CO_(2)(g) + H_(2)O(l)

How many of the following will give O_(2) on heating ? KMnO_(4),K_(2)Cr_(2)O_(7),ZnO,Na_(2)O, PbO_(2),Pb_(3)O_(4),Pb(NO_(3))_(2),NH_(4)NO_(3)