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CIDESCO Practice Exam 2023 Questions and Answers (Verified Answers)
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CIDESCO Practice Exam 2023 Questions and Answers (Verified Answers)1. Characteristics of life include:: Answer- Growth and metabolism
2. Example of organic biological substances are:: Answer- Carbohydrates
and fats
3. Examples of mineral substances are:: Answer- Paraffin's and petroleum
4. Matter is everything that:: Answer- Occupies space and has weight
5. What property does all matter have?: Answer- All matter has weight
6. Sublimation is the change of matter from:: Answer- A solid to a gas
7. The alternation of the properties of matter without formation of any
new substances is called?: Physical change
8. The immediate change of a solid into vapour is called?: Sublimation
9. An example of a single called cellular organism is?: A bacterium
10.Examples of bacteria are?: Bacilli and cocci
11.Which of the following belongs to the science of chemistry?: The
alterna- tion of the structure of molecules
12.An electrolyte is?: A substance which, dissolved in water and splits
into ION's
13.Example of electrolytes are?: Acids and salts
14.An example of an electrolyte is?: Salt solution
15.An acid is an electrolyte because?: It can conduct an electrical current
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, 16.An example of an inorganic acid is?: Sulphuric acid
17.An alkali must contain?: Metal atoms and hydroxyl groups
18.If metal oxide is dissolved in water it forms?: An alkali
19.PH can be decreased by?: Increasing hydrogen ions
20.pH is?: The number of free H ions in a solution
21.The pH of the skins acid mantle is?: 5.5
22.A characteristic of a weak acid is that it?: Supports the natural pH of
the skin
23.A characteristic of organic acids is that?: They contain the element
carbon
24.Organic acids are found in?: Sebum and plants
25.An organic acid contains the chemical group?: COOH
26.When do the electrodes in electrotherapy have to be moistened or to
be applied on moistened skin?: In iontophoresis and not short wave
diathermy
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