| Column A | Column B |
| Electronic configuration | Valency |
| 1) 2, 2 | a) 1 |
| 2) 2, 8, 1 | b) 2 |
| 3) 2, 5 | c) 3 |
| d) 5 |
| Column A | Column B |
| Electronic configuration | Valency |
| 1) 2, 2 | b) 2 |
| 2) 2, 8, 1 | a) 1 |
| 3) 2, 5 | c) 3 |
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| Column A | Column B | Column C | |||
| (1) | Farsightedness | (a) | Near object can be seen a clearly | (i) | Bifocal lens |
| (2) | Presbyopia | (b) | Far away object can be seen clearly | (ii) | Concave lens |
| (3) | Nearsightedness | (c) | Problem of old age | (iii) | Convex lens |
| Substance | Property |
| (1) Potassium bromide | (a) Combustible |
| (2) Gold | (b) Soluble in water |
| (3) Sulphur | (c) No chemical reaction |
| (4) Neon | (d) High ductility |
| Column 'A' | Column 'B' |
| (1) FSH | (a) Regeneration of endometrium |
| (2) Luteinizing hormone | (b) Secretion of endometrial glands |
| (3) Progesterone | (c) Development of follicle |
| (4) Estrogen | (d) Ovulation |
| Column 'A' | Column 'B' |
| (1) Thermal power station. | (a) CNG |
| (2) Nuclear power station | (b) Coal |
| (3) Solar cell | (c) Uranium |
| (4) Natural gas power | (d) Silicon |
| Column A | Column B | ||
| (1) | Pisces | (a) | Salamander |
| (2) | Amphibia | (b) | Penguin |
| (3) | Reptilia | (c) | Scoliodon |
| (4) | Aves | (d) | Dolphin |
| (5) | Mammalia | (e) | Tortoise |
| Column A | Column B |
| (1) Corynobacterium | (a) Lactic acid |
| (2) Aspergillus niger | (b) Itaconic acid |
| (3) Lactobacillus delbrueckii | (c) Gluconic acid |
| (4) Aspergillus itaconius | (d) Wine |
| (e) L-glulamic acid |
| Column A | Column B | ||
| (1) | Humidity | (a) | Mass of water vapour |
| (2) | Absolute humidity | (b) | Moistness or dampness |
| (3) | Relative humidity | (c) | Proportion of vapour content of air |
| Column $A$ | Column $B$ | ||
| $(1)$ | $CH_3COOH + CH_3 - CH_2- OH \xrightarrow[\text { Catalyst }]{\text { Acid }} CH_3-COO-CH_2-CH_3+H_2O$ | $(a)$ | Addition Reaction |
| $(2)$ | $CH _2= CH _2+ H _2 \xrightarrow{ Ni } CH _3- CH _3$ | $(b)$ | Substitution reaction |
| $(3)$ | $CH _4+ Cl _2 \xrightarrow{\text { Sunlight }} CH _3 Cl + HCl$ | $(c)$ | Neutralisation reaction |
| $(4)$ | $CH_3COOH + NaOH \rightarrow CH_{3 }COONa + H_2O$ | $(d)$ | Esterification reaction |