Question
Match the column A with column B.



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| i. $H _2 O$ | (a) 16 |
| ii. $CO _2$ | (b) 18 |
| iii. $C _6 H _{12} O _6$ | (c) 44 |
| iv. $CH _4$ | (d) 180 |
| 1. Oparin and Haldane | (a) use and disuse theory |
| 2. Ernest Haeckel | (b) Mutation theory |
| 3. Leonardo da Vinci | (c) Father of Indian palaeobotany |
| 4. Jean Baptiste Lamarck | (d) Life from the chemical reaction |
| 5. Darwin | (e) Father of palaeontology |
| 6. De Vries | (f) Radioactive carbon |
| 7. Birbal Sahni | (g) Ethnobotany |
| 8. W.F. Libby | (h) Origin of species |
| 9. J.W. Harshberger | (i) Biogenetic law |
| i. Epsom salt | (a) $ZnSO _4 \cdot 7 H _2 O$ |
| ii. Green Vitriol | (b) $MgSO _4 \cdot 7 H _2 O$ |
| iii. White Vitriol | (c) $SiO _2$ |
| iv. Silica gel | (d) $FeSO _4 \cdot 7 H _2 O$ |
| 1. Boyle’s Law | (a) |
| 2. Absolute Scale | (b) V ∝ t |
| 3. Charle’s Law | (c) |
| 4. Boltzmann Constant | (d) V ∝ n |
| 5. Avogadro’s Law | (e) 0 K (zero kelvin) |
| 1. Cowpea | (a) Joining the DNA fragments |
| 2. UV rays | (b) New breed of sheep |
| 3. Lady’s finger | (c) Bacterial blight |
| 4. DNA ligase | (d) Flat bean |
| 5. Pusasem 3 | (e) Pusa Sawani |
| 6. Hissardale | (f) Induce mutation |
| i. Saturated solution | (a) Sulphur in acetone |
| ii. Unsaturated solution | (b) 56 g NaCl in water |
| iii. Supersaturated solution | (c) 10 g of NaCl in water |
| iv. Non-aqueous solution | (d) 36 g of NaCl in water |

| 1. Methylated spirit | (a) Ethanol + water |
| 2. Power alcohol | (b) Ethanol + pyridine |
| 3. Denatured spirit | (c) Ethanol + petrol |
| 4. Rectified spirit | (d) Ethanol + methanol |
| Sample | pH |
| (i) Oranges | (a) 8 |
| (ii) Grapes | (b) 7 |
| (iii) Pure water | (c) 3.5 |
| (iv) Egg white | (d) 4 |