CXC Cheat Sheet 2026

The 30 highest-yield CXC facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Solve the following pair of simultaneous equations: 3x + y = 10 and x - 2y = 1. → x = 3, y = 1
2. What is the role of amylase in digestion? → It breaks down starch into maltose
3. Which of the following is a primary function of a Database Management System (DBMS)? → Enforcing data security and user access control.
4. Which term describes the situation where a firm earns just enough revenue to cover all its costs, including normal profit? → Breakeven point
5. Which of the following is a MECHANICAL process of digestion rather than a chemical one? → Chewing (mastication) by the teeth
6. What is consumer surplus? → The difference between what consumers are willing to pay and what they actually pay
7. Which of the following is an example of non-price competition? → Advertising and product differentiation
8. Which organ produces bile and what is bile's function? → Liver; it emulsifies fats
9. Name the group that has a single bond → Alkanes
10. Where does chemical digestion of food BEGIN in the human digestive system? → Mouth
11. What is the purpose of mucus secreted by the stomach lining? → To protect the stomach wall from being digested by its own acid and enzymes
12. The main reason for the origin of the Caribbean Community is: → The need for economic cooperation
13. What happens to glucose after it is absorbed through the wall of the small intestine? → It enters the bloodstream and is transported to the liver via the hepatic portal vein
14. The chain of volcanic islands forming the Lesser Antilles, including St. Vincent, Martinique, and Montserrat, is a direct result of which tectonic process? → The subduction of the Atlantic seafloor beneath the Caribbean Plate.
15. Which market structure best describes the airline industry in the Caribbean? → Oligopoly
16. A step-down transformer is used to convert a high input voltage to a lower output voltage. This is achieved because the secondary coil has: → fewer turns than the primary coil.
17. How many elements are in C6H12O6? → 3
18. Which of the following is a key function of education as a social institution? → To transmit cultural heritage and prepare individuals for occupational roles.
19. What is price discrimination? → Charging different prices to different customers for the same good
20. The word 'meagre' in the phrase 'leaving only meagre catches for the local fishermen' most nearly means: → Insufficient
21. Inventory Turnover ratio measures: → How efficiently a business sells and replaces its inventory
22. Which of the following is a primary advantage of forming a public limited company compared to a private limited company? → Ability to raise large amounts of capital by selling shares to the public
23. Which set of natural hazards is MOST characteristic of the convergent plate boundary found along the Eastern Caribbean? → Powerful earthquakes and explosive volcanic eruptions.
24. In a perfectly competitive market, what happens to a firm's economic profit in the long run? → It is driven to zero by new entrants
25. What is the mass of 1.2 x 10²⁴ molecules of sulfur dioxide (SO₂)? (Relative atomic masses: S = 32, O = 16; Avogadro's constant = 6.0 x 10²³ mol⁻¹) → 128 g
26. Which of the following BEST defines the process of subduction? → One tectonic plate sliding under another and sinking into the mantle.
27. The name of this compaund C4H10 → BUTANE
28. Which of the following can be most reasonably inferred about the young people of Saltwind Point? → They feel forced to leave due to a lack of opportunities.
29. Which market structure is characterized by a single seller controlling the entire supply of a good or service with no close substitutes? → Monopoly
30. Which compound is made up of carbons and hydrogen → Hydrocarbons