The usage of Aluminium is into the making of food making utensils. Which of the following properties are responsible for it?
(i) Higher reactibility
(ii) Higher boiling point
(iii) Higher electric conductivity
(iv) Higher heat conductivity

Options

A. (i) and (ii)
B. (i) and (iii)
C. (ii) and (iv)
D. (iii) and (iv)

Explanation

To determine which properties of aluminum make it suitable for the production of food-making utensils, we can analyze the given options step by step.

### Step 1: Understand the Usage of Aluminum
Aluminum is widely used in the food industry, particularly for making utensils. This is due to certain physical and chemical properties that make it ideal for this purpose.

**Hint:** Think about what qualities are important for materials used in cooking and food preparation.

### Step 2: Evaluate the Given Properties
Now let's evaluate each option:

1. **Higher Reactivity**: This is not a desirable property for food utensils. A reactive metal would react with food and could be harmful. Therefore, this property is not responsible for the use of aluminum in food utensils.

**Hint:** Consider whether a material that reacts with food is safe or desirable.

2. **Higher Boiling Point**: While a higher boiling point can be beneficial in some contexts, it is not a primary reason for using aluminum in utensils. Many materials can withstand high temperatures, but this does not necessarily make them suitable for cooking.

**Hint:** Think about whether boiling point affects the usability of a cooking utensil directly.

3. **Higher Electric Conductivity**: Aluminum is known for its excellent electrical conductivity. However, this property is not particularly relevant for cooking utensils, as they are not primarily used for conducting electricity.

**Hint:** Consider whether utensils need to conduct electricity for their intended purpose.

4. **Higher Heat Conductivity**: This is a critical property for cooking utensils. Aluminum is an excellent conductor of heat, allowing for even cooking and efficient heat distribution. This property is essential for any cooking utensil.

**Hint:** Reflect on how heat transfer affects cooking performance.

### Step 3: Identify the Relevant Properties
From the evaluation, we can conclude that the properties responsible for aluminum's use in food-making utensils are:

- **Higher Heat Conductivity** (Option iv)

Thus, the correct answer is **(iv) Higher heat conductivity**.

### Final Answer
The properties responsible for the usage of aluminum in making food utensils are:
- (iv) Higher heat conductivity