Question
| Column ‘A’ | Column ‘B’ |
| 1. Sodium hydroxide | a. Whitewashing |
| 2. Magnesium hydroxide | b. Fertilizers |
| 3. Calcium hydroxide | c. Washing soap |
| 4. Ammonium hydroxide | d. Antacid |
| Column ‘A’ | Column ‘B’ |
| 1. Sodium hydroxide | a. Whitewashing |
| 2. Magnesium hydroxide | b. Fertilizers |
| 3. Calcium hydroxide | c. Washing soap |
| 4. Ammonium hydroxide | d. Antacid |
| Column ‘A’ | Column ‘B’ |
| 1. Sodium hydroxide | c. Washing soap |
| 2. Magnesium hydroxide | d. Antacid |
| 3. Calcium hydroxide | a. Whitewashing |
| 4. Ammonium hydroxide | b. Fertilizers |
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| Column A | Column B |
| 1. Silver | a. Copper + tin |
| 2. Mercury | b. Medicines |
| 3. Platinum | c. Thermometer |
| 4. Brass | d. Catalyst |
| 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 ‘A’ | Column ‘B’ |
| 1. < 8 MSun | a. Proton star |
| 2. between 8 and 25 times MSun | b. Black hole |
| 3. > 25 MSun | c. Neutron star |
| d. White dwarf |
| Bacterial diseases | Bacteria |
| 1. Typhoid | (a) Mycobacterium tuberculi |
| 2. Cholera | (b) Bacillus |
| 3. Diarrhoea | (c) Vibrio choleri |
| 4. Tuberculosis | (d) Salmonella typhi |
| 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 |
| Group ‘A’ | Group ‘B’ |
| 1. Fluid | a. Higher pressure |
| 2. Blunt knife | b. Atmospheric pressure |
| 3. Sharp needle | c. Specific gravity |
| 4. Relative density | d. Lower pressure |
| 5. Hectopascal | e. Same pressure in all directions |
| Column I | Column II |
| 1. Proton | a. Negatively charged |
| 2. Electron | b. Neutral |
| 3. Neutron | c. Positively charged |
| 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 |
| Column I | Column II |
| 1. Photosynthesis | a. Tendency to lose electrons |
| 2. Water | b. Reactant in combustion process |
| 3. Sodium chloride | c. Chemical change |
| 4. Dissolution of salt in water | d. Covalent bond |
| 5. Carbon | e. Ionic bond |
| 6. Fluorine | f. Physical change |
| 7. Magnesium | g. Tendency to form anion |
| Producer | Ecosystem |
| 1. Cactus | a. Forest |
| 2. Aquatic plants | b. Creek |
| 3. Mangroves | c. Aquatic |
| 4. Pine | d. Desert |