Which rope floats and resists chemicals?

Which rope floats and resists chemicals?

• A. Kevlar rope
• B. Hemp rope
• C. Polypropylene rope
• D. Nylon rope

Answer: (C)

The main idea is matching a rope’s material properties to two needs: it must stay buoyant on water and resist chemical exposure. Buoyancy comes from low density, while chemical resistance comes from chemical inertness of the material. Polypropylene rope has a density around 0.91 g/cm3, which is lighter than water, so it floats. It’s also chemically resistant to many common substances and does not absorb water, helping it resist deterioration in chemical environments. These traits make it well suited for marine use and applications where both flotation and chemical durability matter. Kevlar rope is strong and resistant to heat and many chemicals, but it sinks because its density is greater than water. Hemp rope is a natural fiber that absorbs water and decays, offering poor chemical resistance. Nylon rope can have good chemical resistance, but its density is above water, so it generally sinks and it can absorb moisture, reducing some of its durability in chemical settings. So, the rope that both floats and resists chemicals is polypropylene rope.

The main idea is matching a rope’s material properties to two needs: it must stay buoyant on water and resist chemical exposure. Buoyancy comes from low density, while chemical resistance comes from chemical inertness of the material.

Polypropylene rope has a density around 0.91 g/cm3, which is lighter than water, so it floats. It’s also chemically resistant to many common substances and does not absorb water, helping it resist deterioration in chemical environments. These traits make it well suited for marine use and applications where both flotation and chemical durability matter.

Kevlar rope is strong and resistant to heat and many chemicals, but it sinks because its density is greater than water. Hemp rope is a natural fiber that absorbs water and decays, offering poor chemical resistance. Nylon rope can have good chemical resistance, but its density is above water, so it generally sinks and it can absorb moisture, reducing some of its durability in chemical settings.

So, the rope that both floats and resists chemicals is polypropylene rope.