Natural and synthetic materials – True or false

The video tutorial explains that metals are not biodegradable but can be recycled multiple times without losing their strength. It highlights the natural and non-biodegradable nature of pulse metals.

What is the biodegradability status of metals?

• Metals cannot be recycled.

• Metals are biodegradable.

• Metals are partially biodegradable.

• Metals are non-biodegradable.

What are pulse metals?

• Natural materials that are biodegradable.

• Artificial materials that are biodegradable.

• Synthetic materials that are recyclable.

• Natural materials that are non-biodegradable.

How often can metals be recycled?

• Only once.

• Twice.

• Not at all.

• Multiple times.

What happens to the strength of metals when they are recycled?

• They lose their strength.

• They maintain their strength.

• They become brittle.

• They gain strength.

Which of the following statements is true about metals?

• Metals are non-biodegradable and cannot be recycled.

• Metals are biodegradable and lose strength when recycled.

• Metals are non-biodegradable and can be recycled multiple times.

• Metals are biodegradable and cannot be recycled.