| Column A | Column B |
| 1. Metal | (a) can be compressed easily |
| 2. Metalloid | (b) have the least density |
| 3.Heating curve | (c) Copper, Mercury, Gold, Chromium |
| 4. Gases | (d) Boron, Germanium, Silicon, Arsenic |
| 5. Liquids | (e) a plot of temperature versus time |
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| Column I | Column II |
| (i) plane mirror | (a) Focal length is positive. |
| (ii) concave | (b) Focal length is negative. |
| (iii) convex | (c) Focal length is infinity. |
| (iv) Real image | (d) Magnification if positive value. |
| (v) Virtual image | (e) Magnification if negative value. |
| 1) Hydrochloric acid | a) Fertilizer |
| 2) Citric acid | b) Baking powder |
| 3) Nitric acid | c) Car batteries |
| 4) Oxalic acid | d) Cleansing agent in toilets |
| 5) Sulphuric acid | e) Removing black stains |
| f) Effervescent salts |
| (1) Rhizobium | a) Crop plants |
| (2) Azolla | b) Antifungal and antibacterial compounds |
| (3) Azotobacter | c) vascular plants |
| (4) Mycorrhizae | d) leguminous plants |
| (5) Azospirillum | e) Floating nitrogen factory |
| XeroLyïtes | Broad and thin leaves |
| Mesophytes | Reducedjplant body |
| Hydrophytes | Water hyacinth |
| Green manure | Small sized leaves |
| 1. | Tuning fork | The point where density of air is maximum |
| 2. | Sound | Maximum displacement from the equilibrium position. |
| 3. | Compressions | The sound whose frequency is greater than 20,000 Hz. |
| 4. | Amplitude | Longitudinal wave. |
| 5. | Ultasonics | Production of sound. |
| 1. World Anti-Tuberculosis day | a) 7th April |
| 2. World Malaria day | b) 1st December |
| 3. World Health day | c) 24th March |
| 4. World AIDS day | d) 25th April |
| Column-I | Column-II |
| Electric Current | radian |
| Luminous intensity | ampere |
| Angle | steradian |
| Solid angle | candela |
| Antipyretics | Large surface area |
| Corrosion prevention | Iodine-131 |
| Hyperthyroidism | Fever |
| Nanoparticle | Body building |
| Proteins | Electroplating |
| 1. Graphite | a) Honeycomb |
| 2. Fullerene | b) Tetrahedral |
| 3. Graphene | c) Hexagonal |
| 4. Diamond | d) Dome-shaped |
| 1. | Length | kelvin |
| 2. | Mass | metre |
| 3. | Time | kilogram |
| 4. | Temperature | second |