| 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 |
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| 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) Coinage metal | (a) 28 |
| (2) Elements form $M ^{+1}$ ion | (b) Cu, Ag, Au |
| (3) All metals | (c) Alkaline metals |
| (4) Number of inner transition elements | (d) group 2 |
| Column A | Column B |
| (1) Acidity | (a) Velocity per second |
| (2) Acceleration | (b) Heterogenous mixture |
| (3) Mixture of iron filling and sulphur powder | (c) Chemical properties |
| (4) Diamond | (d) Elements |
| 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) 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. Oxidation number of S in $H _2 SO _5$. | (a) Always integer |
| 2. Bleaching powder | (b) Equivalent weight $=$ Molecular weight |
| 3. In $FeSO _4 \cdot 7 H _2 O$ | (c) $CaOCl _2$ |
| 4. Valency | (d) $+6$ |
| Column A | Column B |
| 1. Strongest reductant metal | (a) $HgCl _2$ |
| 2. Metal which react with dilute acid | (b) Lithium (Li) |
| 3. Elements which shows only negative oxidation state | (c) Mg |
| 4. Mercury (II) chloride | (d) Fluorine |
| Column A | Column B |
| 1. Secondary amine | (a) $-al$ |
| 2. Carbinol | (b) $C _{10} H _{22}$ |
| 3. Decane | (c) $R - NH - R ^{\prime}$ |
| 4. $- CHO$ group | (d) $CH _3 OH$ |
| Column A | Column B |
| 1. Thermal decomposition of propane. | (a) Polymer of vinyl chloride |
| 2. $CH _3 CH = CH _2+ HBr \xrightarrow{\text { Peroxide }}$ | (b) Propan-2-ol |
| 3. $\begin{array}{l} CH _3- CH = CH _2+ H _2 O \xrightarrow{ H ^{+}}\end{array}$ | (c) Propene + ethene |
| 4. PVC | (d) $CH _3- CH _2- CH _2- Br$ |
| Column A | Column B |
| 1. Removal of electron from any substance | (a) Reduction |
| 2. $\begin{array}{l}2 Na ( s )+ H _2(g) \longrightarrow 2 NaH ( s )\end{array}$ | (b) Both oxidant and reductant |
| 3. Conversion of mercuric chloride to mercurous chloride. | (c) Reduction of $H _2$ |
| 4. $H _2 O _2$ | (d) Oxidation |