| 1. Universal Recipient | (a) Left Atrio Ventricular Valve |
| 2. Blood | (b) Thin and non-elastic cells |
| 3. Thymocytes | (c) Blood group AB |
| 4. Universal Donor | (d) Thick and elastic cells |
| 5. Mitral | (e) Blood group ‘O’ |
| 6. Veins | (f) Blood platelets |
| 7. Arteries | (g) Connective tissue |
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| i. Cuprite | (a) Halide ore |
| ii. Marble | (b) Oxide ore |
| iii. Fluorspar | (c) Sulphide ore |
| iv. Galena | (d) Carbonate ore |
| i. Solubility of $KNO _3$ | (a) decreases with increase in temperature |
| ii. The solubility of CaO | (b) increases with increase in pressure |
| iii. The solubility of oxygen | (c) increases with increase in temperature |
| iv. Solubility of $CO _2$ | (d) more in cold water |
| 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 |
| Sample | pH |
| (i) Sour milk | (a) 4.2 |
| (ii) Tomato juice | (b) 4.5 |
| (iii) Seawater | (c) 12 |
| (iv) Lime water | (d) 8 |
| 1.$CH _3 OH$ | (a) Dimethyl Ketone |
| 2. $CH _3 CHO$ | (b) Acetic acid |
| 3. $CH _3 COCH _3$ | (c) Acetaldehyde |
| 4. $CH _3 COOH$ | (d) Methyl alcohol |
| 1. Big Bang theory | (a) study of regions and practical use of plants |
| 2. Petrifaction | (b) organisms buried and cause depression |
| 3. Archaeopteryx | (c) other names for astrobiology |
| 4. Ethnobotany | (d) preserve hard and soft parts |
| 5. Mould | (e) origin of the universe |
| 6. Exobiology | (f) fossil bird |
| i. Monoatomic molecule | (a) Ozone |
| ii. Diatomic molecule | (b) Phosphorous |
| iii. Triatomic molecule | (c) Helium |
| iv. Polyatomic molecule | (d) Oxygen |