| Column A | Column B |
| 1. Alkyne | (a) $CH _2= CH -$ |
| 2. Paddy alcohol | (b) $C _{ n } H _{2 n } O _2$ |
| 3. Vinyl | (c) $C _{ n } H _{2 n -2}$ |
| 4. Carboxylic acid | (d) $C _2 H _5 OH$ |
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| Column A | Column B |
| (1) High boiling point of $H _2 O$ | (a) Paramagnetic |
| (2) $B _2$ molecule | (b) Decreasing order of bond order |
| (3) HCI < HBr < HI < HF | (c) Intramolecular H -bond |
| (4) $H _2 O > H _2 S> H _2 Se >$ $H _2 Te$ | (d) Increasing order of boiling point |
| 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) Potassium (K) | (a) Elements after ${ }_{92} U$ |
| (2) Chalcogen | (b) Elements of IV period |
| (3) s-block elements | (c) He |
| (4) Peruranium elements | (d) Halogen |
| Column A | Column B |
| (1) Eka-aluminium | (a) Cs (Caesium) |
| (2) Maximum metallic property table | (b) Ionic property |
| (3) Penetrating power of orbitals | (c) Ga (Gallium) |
| (4) $NaCl > MgCl _2$ | (d) More ionisation enthalpy |
| Column A | Column B |
| 1. Oxidation number of carbon in graphite | (a) $-2$ to $+6$ |
| 2. $Zn > Cu > Ag$ | (b) $-1$ |
| 3. Oxidation number of hydrogen in hydrides | (c) Electrochemical series |
| 4. Oxidation number of sulphur | (d) Zero |
| Column A | Column B |
| 1.Acidic property | (a)  |
| 2. Positive mesomeric effect | (b) Inductive effect |
| 3. Unstable effect | (c) Aniline |
| 4. Stable effect | (d) Electromeric effect |
| Column A | Column B |
| (1) $Ba ( OH )_2$ | (a) $\alpha \propto \sqrt{V}$ |
| (2) For weak acid | (b) Acidity = 2 |
| (3) Ostwald dilution law | (c) $\left[ H ^{+}\right]=\sqrt{ C . K _{ a }}$ |
| (4) For dibasic acid | (d) $K _{ a _2}< K _{ a _1}$ |
| 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) $s p^2$ hybridisation | (a) $BeCl _2$ |
| (2) $s p^3$ hybridisation | (b) $\stackrel{\oplus}{ C } H _3$ |
| (3) $Rb _2 O$ | (c) $\stackrel{+}{ N } H _4$ |
| (4) 50/s-character compound | (d) Oxide having more basic property |
| Column A | Column B |
| (1) $CO _3^{2-}$ | (a) Bond order 1.33 |
| (2) $MgCl _2$ | (b) $O _2^{-}$ |
| (3) Zero bond order | (c) lonic compound |
| (4) Super oxide | (d) $BeF _2$ |