Question
| Column I | Column II |
| A. Irreversible | 1. Physical change |
| B. Galvanisation | 2. Crystallisation |
| C. Melting of wax | 3. Red litmus to blue |
| D. Purification of copper sulphate | 4. Rust |
| 5. Zinc |
✓
Answer
A-4, B-5, C-1, D-2
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
| Column A | Column B |
| Q.1. If the torch is close to the ball | (a) The shadow would be smaller |
| Q.2. If the torch is far away | (b) The shadow would be larger |
| Q.3. If the ball is removed from the set-up | (c) Two shadows would appear on the screen |
| Q.4. If two torches are present in the set-up on the left side of the ball | (d) A bright spot would appear on the screen |
| Column I | Column II |
| A. Humus | 1. Depend on plants for food |
| B. Forests | 2. Branchy part of the tree |
| C. Herbivores | 3. Helps forests to grow |
| D. Crown | 4. Dark coloured matter |
| 5. Protect soil from erosion |
→
| Column A | Column B |
| Q.1. Speed | (a) Sundial |
| Q.2. Modern clock | (b) Periodic |
| Q.3. Ancient time measuring instrument | (c) km/h |
| Q.4. Simple pendulum | (d) Quartz |
Match the Column I with Column II.
| Column I | Column II |
| A. Circulatory system | 1. Thin walled |
| B. Most arteries | 2. Heart and blood vessels |
| C. Veins | 3. Oxygenated blood |
| D. Kidney | 4. Circulation of blood |
| 5. Excretion |
| Column A | Column B |
| Q.1. Science | A. Supports life |
| Q.2. Earth | B. Involves experiments and activities |
| Q.3. Scientist | C. Encourages asking questions |
| Q.4. Curiosity | D. A process of discovery |
Match structures given in Column I with functions given in Column II.
| Column I | Column II |
| (a) Stomata | (i) Absorption of water |
| (b) Xylem | (ii) Transpiration |
| (c) Root hairs | (iii) Transport of food |
| (d) Phloem | (iv) Transport of water |
| (v) Synthesis of carbohydrates |
Match the Column I with Column II.
| Column I | Column II |
| A. Amoeba | 1. Release of faeces |
| B. Incisors | 2. Cud chewing animals |
| C. Ruminant | 3. Pseudopodia |
| D. Anus | 4. Cutting and biting |
| Column I | Column II |
| A. Tartaric acid | 1. Soap |
| B. Calcium hydroxide | 2. Curd |
| C. Formic acid | 3. Unripe mangoes |
| D. Sodium hydroxide | 4. Ant's sting |
| 5. Lime water |
Match the Column I with Column II.
| Column I | Column II |
| A. A protective shield | 1. Chemical change |
| B. Brownish coating on iron | 2. Crystallisation |
| C. Impure solid to pure solid | 3. Rust |
| D. Evolution of heat | 4. Ozone |