In order to give strength and elasticity, natural rubber is heated with

Options

A. Sulphur
B. Oxygen
C. Chlorine
D. Nitrogen

Answer

To solve the question regarding what natural rubber is heated with to give it strength and elasticity, we can follow these steps:

### Step 1: Understand the context of the question
Natural rubber is a polymer that has certain properties such as flexibility and elasticity. However, to enhance its strength and elasticity, a specific process is applied.

**Hint:** Consider the processes used to modify the properties of polymers.

### Step 2: Identify the process used for modification
The process used to enhance the properties of natural rubber is known as vulcanization. This process involves the introduction of cross-links between the polymer chains.

**Hint:** Think about what chemical reactions or elements are commonly involved in the vulcanization of rubber.

### Step 3: Determine the key element involved in vulcanization
During vulcanization, sulfur is the key element that is used to create cross-links between the rubber molecules. This interlinking of sulfur atoms increases the strength and elasticity of the rubber.

**Hint:** Recall which element is specifically known for creating cross-links in rubber during vulcanization.

### Step 4: Analyze the options given in the question
The question provides four options: sulfur, oxygen, chlorine, and nitrogen. Based on our understanding of vulcanization, sulfur is the correct choice.

**Hint:** Eliminate the other options by considering their roles in chemical reactions and their relevance to rubber.

### Step 5: Conclude the answer
Thus, the correct answer to the question is that natural rubber is heated with **sulfur** to give it strength and elasticity.

**Final Answer:** Sulfur (Option A).