| Column A | Column B |
| 1. Mustard gas | (a) $180^{\circ}$ |
| 2. PAN | (b) $HC \equiv CH$ |
| 3. $H - C - C$ bond angle in ethyne | (c) Polymer of vinyl cyanide |
| 4. Dehydrohalogenation $\text { in } CH_3 CHBr_2$ | (d) War gas |
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| Column A | Column B |
| (1) Octahedral geometry | (a) $B _2$ molecule |
| (2) Unidentified molecule | (b) $O _2$ molecule |
| (3) Bond order-one | (c) $SF _6$ |
| (4) Paramagnetic | (d) $He _2$ |
| 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) Unit of amount of substance | (a) Physical properties |
| (2) Cancer treatment medicine | (b) Mole |
| (3) $10^9$ | (c) Cisplatin |
| (4) Viscocity | (d) giga |
| Column A | Column B |
| (1) Planck's quantum theory | (a) dipositive charge |
| (2) Value of $l$ for 3d | (b) E = hv |
| (3) Numbers of unpaired electron in $Fe ^{+2}$ | (c) 2 |
| (4) Charge on a particle | (d) 4 |
| Column A | Column B |
| (1) Zero energy of electron | (a) 2s, 2p. |
| (2) Orbitals in second shell | (b) 4 |
| (3) Maximum number of electrons in dorbital | (c) at infinite |
| (4) Number of lobes in d-orbital | (d) 10 |
| Column A | Column B |
| (1) Li, Na, K | (a) 7 |
| (2) Number of periods in periodic table | (b) Elements of group 18 |
| (3) Noble gases | (c) ununseptium |
| (4) Atomic mass 117 | (d) Dobereiner's triad |
| Column A | Column B |
| 1.Nucleophilic | (a) Hydrogen |
| 2. Electrophilic | (b) $: \stackrel{\ominus}{ N } H _2$ |
| 3. Stability of carbanion | (c) Nitrogen ion |
| 4. Zero inductive effect | (d) $1^{\circ}>2^{\circ}>3^{\circ}$ |
| Column A | Column B |
| 1. CNG | (a) $C _6$ to $C _8$ |
| 2. Petrol | (b) Liquid natural gas |
| 3. LPG | (c) Liquid natural gas |
| 4. Aromatisation | (d) Propane and butane |
| 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) Unit of dipole moment | (a) F-F < CI-CI |
| (2) Liquid compound | (b) $H _2 O$ |
| (3) Bond shape | (c) HF |
| (4) Bond enthalpy | (d) Debye (D) |