Which of the following is/are reduced by thiosulphate solution?
(P) `Fe^(+3)` solution (Q) `I_(2)` solution
(R) `Cu^(+2)` solution (S) `Hg^(2+)`

Which of the following ions is coloured iņ aqueous solution? i) Sc^(3+) ii) Co^(2+) iii) Cu^(+)

Which of these ions is expected to be coloured in aqueous solution? (P) Fe^(3+) (Q) Ni^(2+) (R) Al^(3+)

Which of the following are coloured in aqueous solution ? Give reasons : V^(3+), Cu^(+) , Sc^(3+) ,Fe^(3+)

Four solutions labelled as P, Q, R and S have pH values 2, 8, 4, 12 respectively. Which of the following statements about the given solution is incorrect? A)solution P and Q will turn red litmus solution blue. B)solution P is highly acidic while solution Q is weakly basic. C)solution P has higher concentration of hydrogen ion than solution R. (D)solution Q has lower concentration of hydroxyl ions than solution S.

Fe_2 (SO_2)_3 solution will

Which of the following are coloured in aqueous solution? Give rea-sons: V^3+,Cu^(2+),Sc^(3+), Fe^(3+)

(q)/(2) = 3 has a solution

Predict which of the following will be coloured in aqueous solution ? Ti^(3+), V^(3+),Cu^(+),Sc^(3+), Mn^(2+), Fe^(3+), Co^(2+) .

Balance the following half reactions by ion-electron method. (a) I_((aq))^(-) to I_(2(g)) Acid solution (b) Fe_((aq))^(2+) to Fe_((aq))^(3+) Acid solution