| Column A | Column B | Column C |
| (i) Triad | (a) Positive change on the nuleus | (1) Mendeleev |
| (ii) Octave | (b) Sequential change in molecular formulae | (2) Dobereiner |
| (iii) Atomic number | (c) Average of the first and the third atomic mass | (3) Newlands |
| (iv) Period | (d) Properties of the eighth element similar to the first | (4) Mosely |
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| Column $A$ | Column $B$ | ||
| $(1)$ | Heating of Potassium Chlorate | $(a)$ | Turns lime water milky |
| $(2)$ | Depositing a layer of zinc on iron | $(b)$ | Chemical change |
| $(3)$ | Souring of milk | $(c)$ | Galvanisation |
| $(4)$ | Carbon dioxide | $(d)$ | $MnO_2$ is used as Catalyst |
| Column $A$ | Column $B$ | ||
| $(1)$ | Persistence of Vision | $(a)$ | $2.4 \ cm$ |
| $(2)$ | Distance of distinct vision | $(b)$ | $\frac{1}{16}^{th}$ of a second |
| $(3)$ | Diameter of eye ball | $(c)$ | $2 \ cm$ is a lens |
| $(4)$ | Focal length of healthy eye lens | $(d)$ | $25 \ cm$ |
| Group A | Group B |
| a. Bauxite | i. Mercury |
| b. Cassiterite | ii. Aluminium |
| c. Cinnabar | iii. Tin |
| Column A | Column B | ||
| (1) | Myopia | (a) | Convex lens |
| (2) | Hypermetropia | (b) | Concave lens |
| (3) | Presbyopia | (c) | Cone cells |
| (4) | Colour blindness | (d) | Ciliary muscles |
| (e) | Rear new mirror |
| Column 'A' | Column 'B' |
| (1) War | (a) Atmospheric disaster |
| (2) Volcano | (b) Biological disaster |
| (3) Cyclones | (c) Geological disaster |
| (4) Infectious virus | (d) Man-made disaster |
| Column A | Column B | ||
| (1) | Arthropoda | (a) | Head, Foot, Visceral mass |
| (2) | Hemichordata | (b) | Head, neck, trunk, tail |
| (3) | Mollusca | (c) | Proboscis, collar, trunk |
| (4) | Mammalia | (d) | Head, thorax, abdomen |
| Column 'A' | Column 'B' |
| (1) Series of solar cells | (a) Solar cell |
| (2) Series of solar panels | (b) Solar String |
| (3) Solar strings in parallel | (c) Solar panel |
| (4) semiconductor silicon | (d) Solar array |
| Column A | Column B |
| (1) Yoghurt | (a) Lactobacillus lactis |
| (2) Bread | (b) Lactobacillus casei |
| (3) Cheese | (c) Lactobacillus delbrueckii |
| (4) Kefir | (d) Saccharomyces cerevisiae |
| (e) Aspergillus oryzae |
| Column A | Column B |
| 1) Alkaline earth metals | a) Group 18 |
| 2) Alkali metals | b) Group 17 |
| 3) Halogen | c) Group 2 |
| 4) Noble gas | d) Group 1 |
| e) Group 14 |
| Column 'A' | Column 'B' |
| (1) Amoeba | (a) Fragmentation |
| (2) Yeast | (b) Vegetative propagation |
| (3) Bryophyllum | (c) Binary fission |
| (4) Mucor | (d) Budding |
| (e) Spore formation |