Question
| Column I | Column II |
| 1. Thomson | a. Well defined orbits |
| 2. Rutherford | b. Neutron |
| 3. Chadwick | c. Scattering experiment |
| 4. Bohr | d. Electron |
| Column I | Column II |
| 1. Thomson | a. Well defined orbits |
| 2. Rutherford | b. Neutron |
| 3. Chadwick | c. Scattering experiment |
| 4. Bohr | d. Electron |
| Column I | Column II |
| 1. Thomson | d. Electron |
| 2. Rutherford | c. Scattering experiment |
| 3. Chadwick | b. Neutron |
| 4. Bohr | a. Well defined orbits |
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| Group ‘A’ | Group ‘B’ |
| 1. William Harvey | a. Blood group AB. |
| 2. Carl Landsteiner | b. A, B, O blood group system. |
| 3. Decastello and Sturli | c. Mechanism of circulation of blood. |
| Column I | Column II |
| 1. Respiration | a. Potassium and fluorine |
| 2. Acid + Base | b. Glucose and oxygen |
| 3. Photosynthesis | c. Carbon dioxide and water |
| 4. Ionic bond | d. Salt and water |
| Importance of the day | Date |
| 1. World Diabetes Day | (a) 7th April |
| 2. World Heart Day | (b) 14th June |
| 3. World Blood Donation Day | (c) 29th September |
| 4. World Health Day | (d) 14th November |
| Bacterial diseases | Bacteria |
| 1. Typhoid | (a) Mycobacterium tuberculi |
| 2. Cholera | (b) Bacillus |
| 3. Diarrhoea | (c) Vibrio choleri |
| 4. Tuberculosis | (d) Salmonella typhi |
| Scientist | Pattern of classification |
| 1. Carl Linnaeus | (a) 5 groups of living organisms |
| 2. Haeckel | (b) 2 groups as Prokaryotes and Eukaryotes |
| 3. Chatton | (c) 4 groups as Monera, Protista, Plants and Animals |
| 4. Kopland | (d) 3 kingdoms – Protista, Plants and Animals. |
| 5. Whittaker | (e) 2 kingdoms of living organisms |
| Group A | Group B |
| 1. Tamarind | a. Acetic acid |
| 2. Curd | b. Citric acid |
| 3. Lemon | c. Tartaric acid |
| 4. Vinegar | d. Lactic acid |
| Column 1 | Column 2 | Column 3 |
| 1. Pressure | Mass/volume | Specific gravity |
| 2. Density | Force/area | Decreases with increase in height above the sea level |
| 3. Atmospheric pressure | No unit | Useful to determine the purity of a substance |
| 4. Relative density | The pascal | Decreases with increase in area |
| Column ‘A’ | Column ‘B’ |
| 1. Strong acid | a. Magnesium hydroxide |
| 2. Weak alkali | b. Carbonic acid |
| 3. Weak acid | c. NaOH |
| 4. Strong alkali | d. Nitric acid |
| Column ‘A’ | Column ‘B’ |
| 1. Earthquake | a. Formation of artificial water reservoir |
| 2. Tsunami | b. Wildlife lost |
| 3. Forest fire | c. Loss of coastal regions |
| 4. Landslide | d. Change in the level of groundwater-table |
| Column ‘A’ | Column ‘B’ |
| 1. Class A fire | a. Electrical components |
| 2. Class B fire | b. Gaseous substances |
| 3. Class C fire | c. Chemical substances |
| 4. Class D fire | d. Liquid substances |
| 5. Class E fire | e. Solid substances |