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B. Circle the odd one out and give reason in one/a few words. 1. Ammonium phosphate, aldrin, malathion, parathion 2. Aldrin, parathion, benzoic acid, emollients 3. Sodium metabisulphite, salicylic acid, propionic acid, sodium nitrate 4. Aldrin, ethylene oxide, malathion, parathion 5. BHC, urea, potassium phosphate, ammonium phosphate 6. BHC, DDT, carbaryl, aldrin 7. Sodium nitrate, urea, sodium bisulphite, malathion 8. Pneumonia, rinderpest, bronchitis, urinary tract infection 9. Bronchitis, fever, muscle ache, headache 10. Skin cleanser, lotions, moisturizers, hair spray ​

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manmath18597

Answer:

Let's analyze each group and identify the odd one out based on their characteristics:

1. **Ammonium phosphate, aldrin, malathion, parathion**

- **Odd one out:** Aldrin

- **Reason:** Aldrin is a pesticide, while the others are fertilizers or insecticides.

2. **Aldrin, parathion, benzoic acid, emollients**

- **Odd one out:** Benzoic acid

- **Reason:** Benzoic acid is a food preservative, while the others are pesticides or skincare ingredients.

3. **Sodium metabisulphite, salicylic acid, propionic acid, sodium nitrate**

- **Odd one out:** Salicylic acid

- **Reason:** Salicylic acid is used in skincare products (as a topical treatment), while the others are food additives or chemicals.

4. **Aldrin, ethylene oxide, malathion, parathion**

- **Odd one out:** Ethylene oxide

- **Reason:** Ethylene oxide is primarily used as a sterilizing agent or in chemical synthesis, while the others are pesticides.

5. **BHC, urea, potassium phosphate, ammonium phosphate**

- **Odd one out:** BHC (Benzene hexachloride)

- **Reason:** BHC is a pesticide, while the others are fertilizers or chemical compounds.

6. **BHC, DDT, carbaryl, aldrin**

- **Odd one out:** Carbaryl

- **Reason:** Carbaryl is a pesticide, but it belongs to a different chemical class (carbamates), whereas BHC, DDT, and aldrin are organochlorine pesticides.

7. **Sodium nitrate, urea, sodium bisulphite, malathion**

- **Odd one out:** Malathion

- **Reason:** Malathion is a pesticide, while the others are chemicals used in various industrial and agricultural applications.

8. **Pneumonia, rinderpest, bronchitis, urinary tract infection**

- **Odd one out:** Rinderpest

- **Reason:** Rinderpest is a viral disease affecting cattle, whereas the others are human diseases or conditions.

9. **Bronchitis, fever, muscle ache, headache**

- **Odd one out:** Fever

- **Reason:** Fever is a symptom, while bronchitis, muscle ache, and headache are conditions.

10. **Skin cleanser, lotions, moisturizers, hair spray**

- **Odd one out:** Hair spray

- **Reason:** Hair spray is used for styling hair, while the others are skincare products.

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