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CIDESCO EXAM 2024 PREP W ITH 800 REAL
EXAM QUESTIONS AND CORRECT
ANSWERS (100% CORRECT ANSWERS
GRADED A+) 2025/2025 CIDESCO EXAM
PREP TEST BANK (NEW!!)
- A micro-organism is the smallest part of the human body. II All micro-organisms
need nutrients for their existence. - ANSWER-I is incorrect and II is correct
Examples of bacteria are: - ANSWER-bacilli and cocci
- Every living organism needs some non-biological substances for it's existence.
II. All non-biological substances are found as minerals in the earth. - ANSWER-I is correct and II is incorrect
I Biological and non-biological substances both need oxygen for their existence. II The human body consists only of biological substances. - ANSWER-I is correct and II is incorrect
Characteristics of life include: - ANSWER-growth and metabolism
Examples of synthetic substances are: - ANSWER-plastics and silicones
Examples of organic biological substances are: - ANSWER-carbohydrates and fats
Examples of mineral substances are: - ANSWER-paraffins and petroleum 1 / 4
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Matter is everything that: - ANSWER-occupies space and has weight
The three forms of matter are solids, liquids and: - ANSWER-gases
What property does all matter have? - ANSWER-All matter has weight
Condensation is the change of matter from: - ANSWER-a gas to a liquid
Vapourisation is the change of matter from: - ANSWER-liquid to a gas
Melting is the change of matter from: - ANSWER-a solid to a liquid
Sublimation is the change of matter from: - ANSWER-a solid to a gas
Condensation is: - 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: - ANSWER-physical change
The immediate change of a solid into a vapour is called: - ANSWER-sublimation
An example of a single-celled cellular organism is: - ANSWER-a bacterium
Science deals mainly with: - ANSWER-physics and chemistry
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The study of the structure of the body is called: - ANSWER-anatomy
The study of the functions of living organisms is: - ANSWER-physiology
I Anatomy is a very important science in the field of biology. II Anatomy is the science which deals with the functions of the human body. - ANSWER-I is correct and II is incorrect
I Physiology is a very important science in the field of biology. II Physiology is the science which deals with the functions of the body. - ANSWER-I and II are both correct
Which one of the following belongs to the science of chemistry? - 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. - ANSWER-I is incorrect and II is correct
The field of physics includes: - ANSWER-heat and electricity
Which one of the following belongs to the field of physics? - ANSWER-Sound, electricity and heat
The field of physics includes: - ANSWER-the science of electricity
An anion is: - ANSWER-A negatively charged atom
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An anion is: - ANSWER-a negatively charged chloride atom (CI-)
A cation is: - ANSWER-A positively charged sodium atom (Na+)
An electrolyte is: - ANSWER-A substance which, dissolved in water, splits into
ions
Examples of electrolytes are: - ANSWER-acids and salts
An example of an electrolyte is: - ANSWER-salt-solution
An acid is an electrolyte because: - ANSWER-it can conduct an electric current
An example of an inorganic acid is: - ANSWER-sulphuric acid
An alkali must contain: - ANSWER-metal atoms and hydroxyl group(s) (OH)
An example of an alkaline substance is: - ANSWER-soap
If a metal-oxide is dissolved in water it forms: - ANSWER-an alkali
The pH scale is used to measure the degree of acidity or: - ANSWER-alkalinity
pH can be decreased by: - ANSWER-increasing hydrogen-ions
The letter p in pH means: - ANSWER-potential
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