Question
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| Column A | Column B |
| (1) Formation of spindle fibres | (a) Prophase |
| (2) Sister chromatids are pulled apart | (b) Telophase |
| (3) Nuclear membrane and nucleolus reappear | (c) Metaphase |
| (4) Centrioles duplicate and move to opposite poles | (d) Anaphase |
| Reactants | Products | Types of Reaction | |||
| $(1)$ | $BaCl_2(aq) + ZnSO_4 (aq)$ | $(a)$ | $H_2CO_3(aq)$ | $(i)$ | Displacement |
| $(2)$ | $2 AgCl(s)$ | $(b)$ | $FeSO_4(aq) + Cu(s)$ | $(ii)$ | Combination |
| $(3)$ | $CuSO_4 (aq) + Fe(s)$ | $(c)$ | $BaSO_4↓+ ZnCl_2 (aq)$ | $(iii)$ | Decomposition |
| $(4)$ | $H_2O(l) + CO_2(g)$ | $(d)$ | $2Ag(s) + Cl_2(g)$ | $(iv)$ | Double displacement |
| 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 |
| Group A | Group B |
| 1) Copper and Zinc | a) Brass |
| 2) Copper and Tin | b) Bronze |
| c) Stainless steel |
| Column A | Column B |
| (1) Phenol oxidising bacteria | (a) Prevent leaching of iron, zinc by forming compounds |
| (2) Thiobacilli | (b) Xenobiotic chemicals |
| (3) Pseudomonas spp. | (c) Soil pollution due to acid rain |
| (4) ) Ideonella sakaiensis | (d) Biopesticide |
| (e) Oil spills | |
| (f) PET |
| Group A | Group B |
| a. Bauxite | i. Mercury |
| b. Cassiterite | ii. Aluminium |
| c. Cinnabar | iii. Tin |
| Group A | Group B |
| 1. Making sheets of metals | a) Sonority |
| 2. Making metal utensils | b) Malleability |
| 3. Making Copper wires | c) Good conductor of heat |
| 4. Making bells from metal | d) Ductility |