Explanation:
The word that is different from the rest is "C: Oil." Here's the detailed explanation:
Curd, Butter, Oil, Cheese:
- Curd: Curd is a dairy product made by curdling milk with an edible acidic substance like lemon juice or vinegar. It has a creamy texture and is commonly used in cooking and as a condiment.
- Butter: Butter is a dairy product made from churning cream or milk. It is solid at room temperature and is often used as a spread, in baking, or for cooking purposes.
- Oil: Oil refers to various types of fats that are liquid at room temperature. It can be derived from plants, animals, or synthetic sources. Oils are commonly used for cooking, frying, and dressing food.
- Cheese: Cheese is a dairy product made from curdled milk. It is formed by coagulating the milk protein casein, and it comes in various forms, textures, and flavors.
Reason for the Difference:
- The main reason why "C: Oil" is different from the rest is that it is not a dairy product like the other options. Curd, butter, and cheese are all made from milk or cream, while oil is derived from various sources, including plants and animals.
- Unlike the other options, oil is not solid at room temperature but rather exists in a liquid state.
- Additionally, oil serves a different purpose in cooking compared to the other options. It is primarily used for frying, sautéing, and dressing food, whereas curd, butter, and cheese are more commonly used for flavoring, spreading, or as ingredients in recipes.
Therefore, based on the above reasons, the word "C: Oil" is the one that is different from the rest.

Understanding the Differences
To determine why "Oil" is the odd one out among the options, let's analyze each item.
Types of Products
- Curd: A dairy product made by curdling milk.
- Butter: A dairy product made by churning cream.
- Cheese: A dairy product made from milk through the process of curdling and fermentation.
- Oil: A fat derived from plants or animals, not specifically related to dairy.
Classification of Items
- Dairy Products: Curd, Butter, and Cheese all fall under the category of dairy products. They are derived from milk and are essential components of many diets.
- Non-Dairy Product: Oil, on the other hand, is not a dairy product. It is primarily used for cooking and as a fat source but does not originate from milk.
Conclusion
The correct answer is option 'C' (Oil) because it does not belong to the same category as the other three options. While Curd, Butter, and Cheese are all derived from milk, Oil is a completely different type of product. This classification highlights the distinct nature of each item, making "Oil" the odd one out.