List-I | List-II | ||
---|---|---|---|
(A) | Cd(s)+2Ni(OH)3(s)→CdO(s)+2Ni(OH)2(s)+H2O(l) | (I) | Primary battery |
(B) | Zn(Hg)+HgO(s)→ZnO(s)+Hg(l) | (II) | Discharging of secondary battery |
(C) | 2PbSO4(s)+2H2O(l)→Pb(s)+PbO2(s)+2H2SO4(aq) | (III) | Fuel cell |
(D) | 2H2(g)+O2(g)→2H2O(l) | (IV) | Charging of secondary battery |
Choose the correct answer from the options given below:
From the given options the correct answer is option (C): (A) - (II), (B) - (I), (C) - (IV), (D) - (III)
Given below are two statements.
In the light of the above statements, choose the correct answer from the options given below:
Given below are two statements:
Statement I: Nitrogen forms oxides with +1 to +5 oxidation states due to the formation of $\mathrm{p} \pi-\mathrm{p} \pi$ bond with oxygen.
Statement II: Nitrogen does not form halides with +5 oxidation state due to the absence of d-orbital in it.
In the light of the above statements, choose the correct answer from the options given below:
Given below are the pairs of group 13 elements showing their relation in terms of atomic radius. $(\mathrm{B}<\mathrm{Al}),(\mathrm{Al}<\mathrm{Ga}),(\mathrm{Ga}<\mathrm{In})$ and $(\mathrm{In}<\mathrm{Tl})$ Identify the elements present in the incorrect pair and in that pair find out the element (X) that has higher ionic radius $\left(\mathrm{M}^{3+}\right)$ than the other one. The atomic number of the element (X) is
Match List-I with List-II: List-I