Which of the following is false ?

Options

A. Artificial silk is derived from cellulose
B. Nylon-6,6is an example of elastomer
C. The repeat unit in natural rubber in isoprene
D. Both starch and cellulose are polymers of glucose

Explanation

To determine which statement is false among the given options, we will analyze each statement one by one.

### Step 1: Analyze the first statement
**Statement:** Artificial silk is derived from cellulose.

**Explanation:**
Artificial silk, also known as rayon, is indeed derived from cellulose. Cellulose is a natural polymer found in the cell walls of plants, and it can be chemically processed to produce rayon.

**Conclusion:** This statement is **true**.

### Step 2: Analyze the second statement
**Statement:** Nylon 6-6 is an example of elastomer.

**Explanation:**
Nylon 6-6 is a type of polyamide and is primarily used as a fiber in textiles and other applications. It is known for its strength and durability, but it does not exhibit the elastic properties characteristic of elastomers. Elastomers are polymers that can stretch and return to their original shape, like rubber. Therefore, this statement is **false**.

### Step 3: Analyze the third statement
**Statement:** The repeating unit in natural rubber is also correct.

**Explanation:**
Natural rubber is primarily made up of polyisoprene, which has a repeating unit derived from isoprene monomers. This statement is true as it correctly identifies the repeating unit in natural rubber.

**Conclusion:** This statement is **true**.

### Step 4: Analyze the fourth statement
**Statement:** Both starch and cellulose are polymers of glucose.

**Explanation:**
Both starch and cellulose are polysaccharides composed of glucose units. Starch is a storage form of glucose in plants, while cellulose serves structural purposes. Thus, this statement is also **true**.

### Final Conclusion
After analyzing all the statements, we find that the false statement is:

**False Statement:** Nylon 6-6 is an example of elastomer.

### Summary
The false statement among the options provided is that Nylon 6-6 is an example of elastomer.

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