MEDIUM
Upper Secondary-IGCSE
IMPORTANT
Earn 100
Complex carbohydrates such as starch are another group of condensation polymers. Enzymes such as amylase, a carbohydrase, can hydrolyse complex carbohydrates to simple sugars which can be represented as:
Draw the structure of the complex carbohydrate chain (showing at least three monomer units).
Important Questions on Petrochemicals and Polymers
HARD
Upper Secondary-IGCSE
IMPORTANT
Complete the following table on the third type of important condensation polymer.
| Monomers used |
|
| Structure of the polymer formed | |
| What other product forms | name:_____ formula:_____ |
|
Type of polymer formed (circle one of these possible answers) |
polyamide polyester polysaccharide |
| A name for one polymer of this type | |
| Is the polymer synthetic or natural? |
EASY
Upper Secondary-IGCSE
IMPORTANT
Carbon nanotubes are examples of the fullerenes which are novel structural forms of carbon. Name the two commonest major forms of carbon.
HARD
Upper Secondary-IGCSE
IMPORTANT
Leaded petrol has now been almost completely phased out in most countries because of the adverse effects it causes. What are the adverse effects that have resulted in leaded petrol being removed from use?
