Question
| Column A | Column B |
| (1) $SH ^{+4}< Sn ^{+2}$ | (a) Fluorine |
| (2) Maximum ionisation enthalpy in periods | (b) lonic radii |
| (3) Electron gain enthalpy | (c) Noble gases |
| (4) Element having maximum electro- negativity | (d) Negative |
| Column A | Column B |
| (1) $SH ^{+4}< Sn ^{+2}$ | (a) Fluorine |
| (2) Maximum ionisation enthalpy in periods | (b) lonic radii |
| (3) Electron gain enthalpy | (c) Noble gases |
| (4) Element having maximum electro- negativity | (d) Negative |
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| Column A | Column B |
| (1) $CH _3 COOK$ | (a) $h=\sqrt{ Kh }$ |
| (2) $CH _3 COONH _4$ | (b) $K _{s p}=s^2$ |
| (3) pH range of acidic buffer | (c) $Kh =\frac{ K _{ w }}{ K _{ a }}$ |
| (4) For $BaSO _4$ | (d) $pK _{ a } \pm 1$ |
| Column A | Column B |
| (1) Elements in metals. having highest melting point | (a) Hoffnium (Hf) |
| (2) II electron gain enthalpy of oxygen | (b) III > II > 1 |
| (3) Sequence of ionization enthalpy | (c) Positive |
| (4) II member of 5d series | (d) Tungsten (W) |
| Column A | Column B |
| (1) Isochoric process | (a) zero |
| (2) First law of thermodynamics | (b) $d V=0$ |
| (3) Density | (c) $\Delta U = q + w$ |
| (4) Enthalpy of formation of any element in transition state | (d) intensive property |
| Column A | Column B |
| 1. $- SO _3 H$ | (a) Prefix sulpho |
| 2. Mixed ether | (b) Chain isomerism |
| 3. All $2^{\circ}$ carbon | (c) $CH _3- O - C _2 H _5$ |
| 4. n -butane and isobutane | (d) Benzene |
| 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) 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. Explosive | (a) HCN |
| 2. $CH _4+ N _2 \xrightarrow{\text { electric arc }}$ | (b) $1.34$ pm |
| 3. Free rotation of carboncarbon single bond | (c) Tetraethyl lead |
| 4. $> C = C <$ Bond length | (d) Conformational isomerism |
| Column A | Column B |
| (1) Basicity of boric acid | (a) $\Delta H$ is positive |
| (2) Proton acceptor | (b) pH < 7 |
| (3) Endothermic reaction | (c) Bronsted-Lowry base |
| (4) Aqueous solution of NH4 CI | (d) 1 |
| 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) 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 |