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CIDESCO EXAM LATEST 2025 /2026 WITH CORRECT
QUESTIONS AND DETAILED ANSWERS/ALREADY GRADED
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Matter is everything that: - CORRECT ANSWER- occupies space and has weight
The three forms of matter are solids, liquids and: - CORRECT ANSWER- gases
What property does all matter have? - CORRECT ANSWER- All matter has weight
Condensation is the change of matter from: - CORRECT ANSWER- a gas to a
liquid
Vapourisation is the change of matter from: - CORRECT ANSWER- liquid to a gas
Melting is the change of matter from: - CORRECT ANSWER- a solid to a liquid
Sublimation is the change of matter from: - CORRECT ANSWER- a solid to a gas
Condensation is: - CORRECT ANSWER- the change of a vapour to a liquid
The alteration of the properties of matter without the formation of any new
substance is called a/an: - CORRECT ANSWER- physical change
The immediate change of a solid into a vapour is called: - CORRECT ANSWER-
sublimation
An example of a single-celled cellular organism is: - CORRECT ANSWER- a
bacterium I. A micro-organism is the smallest part of the human body. II All micro-organisms
need nutrients for their existence. - CORRECT ANSWER- I is incorrect and II is
correct I Biological and non-biological substances both need oxygen for their existence. II
The human body consists only of biological substances. - CORRECT ANSWER- I is
correct and II is incorrect
Characteristics of life include: - CORRECT ANSWER- growth and metabolism
Examples of synthetic substances are: - CORRECT ANSWER- plastics and silicones
Examples of organic biological substances are: - CORRECT ANSWER-
carbohydrates and fats
Which one of the following belongs to the science of chemistry? - CORRECT
ANSWER- The alteration of the structure of molecules
I Chemical reactions only take place outside and not inside a living organism. II
The structure of molecules change during chemical reactions. - CORRECT
ANSWER- I is incorrect and II is correct
The field of physics includes: - CORRECT ANSWER- heat and electricity
Which one of the following belongs to the field of physics? - CORRECT ANSWER-
Sound, electricity and heat
The field of physics includes: - CORRECT ANSWER- the science of electricity
An anion is: - CORRECT ANSWER- A negatively charged atom
An anion is: - CORRECT ANSWER- a negatively charged chloride atom (CI-)
A cation is: - CORRECT ANSWER- A positively charged sodium atom (Na+)
An electrolyte is: - CORRECT ANSWER- A substance which, dissolved in water,
splits into ions
Examples 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 electric
current
An example of an inorganic acid is: - CORRECT ANSWER- sulphuric acid
An alkali must contain: - CORRECT ANSWER- metal atoms and hydroxyl group(s)
(OH)
An example of an alkaline substance is: - CORRECT ANSWER- soap
If a metal-oxide is dissolved in water it forms: - CORRECT ANSWER- an alkali
The pH scale is used to measure the degree of acidity or: - CORRECT ANSWER-
alkalinity
pH can be decreased by: - CORRECT ANSWER- increasing hydrogen-ions
The letter p in pH means: - CORRECT ANSWER- potential
Substances having a pH value above 9.5 are considered to be: - CORRECT
ANSWER- alkaline
The pH of the skin's acid mantle is: - CORRECT ANSWER- 5.
A characteristic of a weak acid is that it: - CORRECT ANSWER- supports the
natural pH of the skin
A characteristic of a weak alkali is that it: - CORRECT ANSWER- softens the
stratum corneum of the skin
The effect of a strong acid is: - CORRECT ANSWER- corrosive and therefore of no
use in beauty therapy
A characteristic of organic acids is that: - CORRECT ANSWER- they contain the
element carbon (C)
Organic acids are found in: - CORRECT ANSWER- sebum and plants
An organic acid contains the chemical-group: - CORRECT ANSWER- COOH
An anode is: - CORRECT ANSWER- A positively charged electrode
A cathode is: - CORRECT ANSWER- A negatively charged electrode
Examples of electrodes which are used in beauty therapy are: - CORRECT
ANSWER- the needles used for galvanic electrolysis
In physics, radiation means: - CORRECT ANSWER- the electro-magnectic waves
in space system
The unit of frequency is: - CORRECT ANSWER- Hertz
In physics, frequency means: - CORRECT ANSWER- the number of times per
second an electro-magnetic-wave can change direction
The unit of frequency is: - CORRECT ANSWER- Hertz
Hertz is a unit of: - CORRECT ANSWER- frequency
In the visible spectrum the colours in the correct order are: - CORRECT
ANSWER- red, orange, yellow and green
In the visible spectrum the colours in the correct order are: - CORRECT
ANSWER- green, blue, indigo and violet
Which of the following radiation has the most anti-bacterial effect? - CORRECT
ANSWER- UV-C
What is the safest radiation that can be used to increase pigmentation? -
CORRECT ANSWER- UV-A
Which rays are mostly used in ray-treatments to increase pigmentation? -
CORRECT ANSWER- UV-A and UV-B
Ultra-violet radiation is absorbed: - CORRECT ANSWER- mainly in the epidermis
The radiation mainly responsible for tanning the skin is: - CORRECT ANSWER-
UV-A
Skin cancer is most likely caused by: - CORRECT ANSWER- Ultra-violet
An electric current is: - CORRECT ANSWER- A flow of electrons
Which electric currents can be used in electrotherapy? - CORRECT ANSWER-
High frequency currents of high voltage
Which electric currents can be used in electrotherapy? - CORRECT ANSWER-
High frequency and middle frequency currents both of low voltage
Which electric currents can be used in electrotherapy? - CORRECT ANSWER-
Faradic and galvanic currents both of low voltage
Examples of solid conductors are: - CORRECT ANSWER- metals
Examples of liquid conductors are: - CORRECT ANSWER- fluids in which ions are
present
Examples of liquid conductors are: - CORRECT ANSWER- body fluids and alkali
solutions
Which gas can conduct electric current? - CORRECT ANSWER- neon
Examples of insulators are: - CORRECT ANSWER- plastics
An example of an insulator is: - CORRECT ANSWER- rubber
The strength of an electric current is measured by it's: - CORRECT ANSWER-
amperage
The current that is used to tone muscles is called: - CORRECT ANSWER- faradic
A so-called "faradic type current" is different from a galvanic current in beauty
therapy because: - CORRECT ANSWER- it is more effective for training muscles
A galvanic current is different from a so-called "faradic type current" in beauty
therapy because: - CORRECT ANSWER- it is more effective for iontophoresis
Which machine for treatments in beauty therapy supplies galvanic current? -
CORRECT ANSWER- A machine for iontophoresis
For which treatments in beauty therapy is galvanic current used? - CORRECT
ANSWER- Iontophoresis
For which treatments in beauty therapy is galvanic current used? - CORRECT
ANSWER- Iontophoresis and electric desincrustation
The meaning of iontophoresis is: - CORRECT ANSWER- to force cosmetic
ingredients deeper into the skin
The meaning of desincrustation is: - CORRECT ANSWER- to remove substances
from the skin's surface
Desincrustation to remove substances from the surface of the skin is done with a:
- CORRECT ANSWER- galvanic machine and cathode as the active electrode
The effect of desincrustation on sebum is: - CORRECT ANSWER- a saponification
process caused by galvanic, current
A machine for iontophoresis is most likely to contain: - CORRECT ANSWER- a
rectifier and a transformer
A machine for desincrustation is most likely to contain: - CORRECT ANSWER- a
rectifier and a transformer I. Galvanic current can be obtained from a dry cell (battery) II. The electric mains
supplies galvanic current. - CORRECT ANSWER- I is correct and II is incorrect
The electrical device that changes alternating current into direct current is a: -
CORRECT ANSWER- rectifier
The function of a rectifier is to change: - CORRECT ANSWER- an alternating
current into a galvanic current When do the electrodes in electrotherapy have be moistened or to be applied on
a moistened skin? - CORRECT ANSWER- in iontophoresis and not short wave
diathermy
The study of the structure of the body is called: - CORRECT ANSWER- anatomy
The study of the functions of the human body is: - CORRECT ANSWER-
physiology
The outer wall of a cell is called the: - CORRECT ANSWER- cell membrane
Deoxyribonucleic acid or D.NA: - CORRECT ANSWER- carries genetic information
Which of the following is the genetic material of the cell? - CORRECT ANSWER-
DNA
The main part of the cell which contains protoplasm is the: - CORRECT
ANSWER- cytoplasm
The nucleus of a cell is directly surrounded by: - CORRECT ANSWER- the nuclear
membrane
The part of the cell in contact with it's environment is the: - CORRECT ANSWER-
cell membrane
The part of a cell that controls the activities of the cell is the: - CORRECT
ANSWER- nucleus
The nucleus of a cell contains: - CORRECT ANSWER- DNA
The nucleus of a cell contains: - CORRECT ANSWER- nucleoli
Meiosis is a process concerned with: - CORRECT ANSWER- body division of a sex
cell The process of cell division where the mother cell divides into two identical
daughter cells is called: - CORRECT ANSWER- mitosis
The phase of mitosis during which centrioles reach the ends of the cell is: -
CORRECT ANSWER- metaphase
The last stage of mitosis is known as: - CORRECT ANSWER- telophase
The phase of mitosis in which the chromatin of the nucleus forms chromosomes
is: - CORRECT ANSWER- prophase
The phase of mitosis in which two identical daughter cells are produced is: -
CORRECT ANSWER- telophase
The name for a collection of similar cells grouped together for a particular
function is: - CORRECT ANSWER- tissue
Tissues are composed of: - CORRECT ANSWER- cells
Tissue specialised for movement is: - CORRECT ANSWER- muscular
Tissue which provides support and protection and binds structures together is: -
CORRECT ANSWER- connective
The rapid co-ordination of many complicated body functions is carried out by: -
CORRECT ANSWER- nervous tissue
Impulses can be transmitted throughout the body by: - CORRECT ANSWER-
nervous tissue
Tissue found lining the surfaces of organ is: - CORRECT ANSWER- epithelial
Flat, scale-like epithelial cells are anatomically referred to as: - CORRECT
ANSWER- squamous
Which one of the following is NOT formed from connective tissue? - CORRECT
ANSWER- the epidermis
The characteristic tissue of skin glands is: - CORRECT ANSWER- epithelial tissue
Which one of the following is NOT a function of epithelial tissue? - CORRECT
ANSWER- contraction
Simple squamous epithelium is found: - CORRECT ANSWER- in the alveoli of
lungs
Simple cuboidal epithelium is found: - CORRECT ANSWER- in kidney tubules
Which of the following organs is lined with stratified epithelium? - CORRECT
ANSWER- mouth
A gland which produces it's secretion as the entire cell disintegrates is known as: -
CORRECT ANSWER- The holocrine gland
Tissue found supporting organs is called: - CORRECT ANSWER- connective
An example of connective tissue is: - CORRECT ANSWER- cartilage
Blood is a specialised kind of: - CORRECT ANSWER- connective tissue
