| Column A | Column B |
| (1) For isothermal reversible process | (a) calculation of combustion energy |
| (2) Entropy change at equilibrium | (b) $\begin{array}{l} W _{ rev }=-2303 nRT \\ \log \frac{ V _{ f }}{ V _{ i }}\end{array}$ |
| (3) Ideal process | (c) $\Delta S =0$ |
| (4) Bomb calorimeter | (d) reversible process |
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| Column A | Column B |
| (1) Amphoprotic solvent | (a) $CO _3^{2-}$ |
| (2) Conjugate base of $HCO _3^{-}$ | (b) $BF _3$ |
| (3) $CH _3 COOH$ | (c) $NH _3$ |
| (4) Lewis acid | (d) A weak base |
| Column A | Column B |
| (1) Nodal plane for $P _x$ orbital | (a) 6s, 5p, 4d |
| (2) 3 unpaired electrons in nitrogen | (b) yz |
| (3) Orbitals for n = 5, $l$=2 and m =0 | (c) Hund's law of maximum |
| (4) Orbitals for n+$l$ = 6 | (d) $5 dz ^2$ |
| Column A | Column B |
| (1) Wavenumber | (a) Principal quantum numbers |
| (2) Radius of Bohr shell | (b) $2 n^2$ |
| (3) Maximum number of electrons in any orbital | (c) $\frac{1}{\lambda}$ |
| (4) K, L, M, N, O | (d) $\frac{n^2}{Z} \times 0.529 Å$ |
| Column A | Column B |
| (1) Number of elements in fourth period of periodic table | (a) Actinoids series |
| (2) d-block elements | (b) $[ Ar ] 3 d^5 4 s^2$ |
| (3) 5f series | (c) 18 |
| (4) Mn-electronic configuration | (d) Transition elements |
| Column A | Column B |
| (1) Positive rays or canal rays | (a) n = A-Z |
| (2) Discovery of neutron | (b) isotones |
| (3) ${ }_{14}^{30} Si$ and ${ }_{15}^{31} P$ | (c) Chadwick |
| (4) Number of neutrons | (d) Proton |
| Column A | Column B |
| (1) $\Delta H _s$ | (a) R |
| (2) $C _{ p }- C _{ V }$ | (b) System + surroundings |
| (3) Law of conservation of energy | (c) $\Delta H _{ f }+\Delta H _V$ |
| (4) Universe | (d) First law of thermodynamics |
| Column A | Column B |
| (1) Neutralization energy of HCl + NaOH | (a) Heat exchange due to difference in temperature |
| (2) Formation of mixture of gases | (b) 57.32 kJ |
| (3)$\Delta G$ > 0 | (c) increase in entropy |
| (4) Heat | (d) non-spontaneous process |
| Column A | Column B |
| 1. Hyperconjugation | (a) Elimination reaction |
| 2. $CH _4 \rightarrow CH _3 Cl$ | (b) $\sigma$ bond resonance |
3.  | (c) Electrophilic addition reaction |
| 4. $CH _2= CH _2+ HBr$ | (d) Substitution reaction |
| Column A | Column B |
| (1) Bond order-2 | (a) $O _2^{-2}$ |
| (2) $O _2^{+}> O _2$ | (b) $XeF _2$ |
| (3) Peroxide ion | (c) $C _2$ |
| (4) 3 1.p at central atom | (d) Stability |
| Column A | Column B |
| (1) $\left[ H ^{+}\right]=\left[ OH ^{-}\right]$ | (a) Neutral solution |
| (2) POH > PH | (b) N=2x M |
| (3) 1 M HCI solution | (c) Acidic solution |
| (4) For $H _2 SO _4$ | (d) pH = 0 |