CIDESCO Questions Exam Questions with Correct Answers

Characteristics of life include: Correct Answer Growth and metabolism Example of organic biological substances are: Correct Answer Carbohydrates and fats Examples of mineral substances are: Correct Answer Paraffin's and petroleum Matter is everything that: Correct Answer Occupies space and has weight What property does all matter have? Correct Answer All matter has weight Sublimation is the change of matter from: Correct Answer A solid to a gas The alternation of the properties of matter without formation of any new substances is called? Correct Answer Physical change The immediate change of a solid into vapour is called? Correct Answer Sublimation An example of a single called cellular organism is? Correct Answer A bacterium Examples of bacteria are? Correct Answer Bacilli and cocci Which of the following belongs to the science of chemistry? Correct Answer The alternation of the structure of molecules An electrolyte is? Correct Answer A substance which, dissolved in water and splits into ION's Example of electrolytes are? Correct Answer Acids and salts An example of an electrolyte is? Correct Answer Salt solution An acid is an electrolyte because? Correct Answer It can conduct an electrical current An example of an inorganic acid is? Correct Answer Sulphuric acid An alkali must contain? Correct Answer Metal atoms and hydroxyl groups If metal oxide is dissolved in water it forms? Correct Answer An alkali PH can be decreased by? Correct Answer Increasing hydrogen ions