| 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 |
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| Column A | Column B |
| (1) Condition of precipitation | (a) Do not hydrolysed |
| (2) II group of basic radicals | $\begin{array}{c}\text { (b) } pH = pKa + \\ \log \frac{[\text { salt }]}{[\text { acid }]}\end{array}$ |
| (3) Henderson equation | (c) $K _{ sp }< Q _{ sp }$ |
| (4) NaCl | (d) Acidic medium |
| Column A | Column B |
| (1) Deci | (a) atomic mass |
| (2) Equivalent weight of atom Valency | (b) weight-weight unit |
| (3) $6.022 \times 10^{22}$ carbon atom | (c) 1/10 |
| (4) Molality | (d) 1.2 gm carbon |
| Column A | Column B |
| 1. On Ag electrode, the electrolysis of aqueous solution of $AgNO _3$ | (a) $K _2 Cr _2 O _7$ |
| 2. $Cr < Mg < K$ | (b) $CHCl _3$ |
| 3. Different mathmetical value of valency and oxidation number of carbon | (c) Reducing capacity |
| 4. Oxidizing property | (d) On cathode Ag and on anode $Ag ^{+}$ |
| Column A | Column B |
| (1) Bond angle 120° | (a) $s p^3-s p^3$ overlapping |
| (2) $H _2^{-}< H _2{ }^{+}< H _2$ | (b) $\left[ Ni ( CN )_4\right]^{2-}$ |
| (3) $d s p^2$ hybridisation | (c) Benzene |
| (4) C-C bond in ethane | (d) Increasing order of stability |
| Column A | Column B |
| (1) Enthalpy of solution | (a) irreversible process |
| (2) Volume | (b) decrease in entropy |
| (3) Spontaneous process | (c) hydration enthalpy/ salvation enthalpy |
| (4) Crystallisation of sugar from solution | (d) Extensive property |
| 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. Addition reaction | (a) $\begin{array}{c} Ca ( s )+2 H _2 O ( l ) \longrightarrow Ca ( OH )_2( aq )+ H _2(g)\end{array}$ |
| 2. Decomposition reaction | (b) $C ( s )+ O _2(g) \longrightarrow CO _2(g)$ |
| 3. Displacement reaction | (c) $\begin{array}{r}2 H _2 O (l) \longrightarrow 2 H _2(g)+ O _2(g)\end{array}$ |
| 4. Disproportionation reaction | (d) $\begin{aligned} 2 H _2 O _2( aq ) \longrightarrow & 2 H _2 O ( l ) & + O _2(g)\end{aligned}$ |
| 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) 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) 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 |