CIDESCO Exam Prep 2024 | CIDESCO
Actual Exam 2024 Questions and
Correct Answers Rated A+
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
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
I. 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
I. 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
Science deals mainly with: -ANSWER-physics and chemistry
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
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
pH is: -ANSWER-the number of free H-ions in solution
If the pH of a solution is between 5 and 7, the solution is a: -
ANSWER-weak acid
If the pH of a solution is between 1 and 3 the solution is a: -ANSWER-
strong acid
If the pH of a solution is between 7 and 9 the solution is a: -ANSWER-
weak alkali
Actual Exam 2024 Questions and
Correct Answers Rated A+
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
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
I. 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
I. 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
Science deals mainly with: -ANSWER-physics and chemistry
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
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
pH is: -ANSWER-the number of free H-ions in solution
If the pH of a solution is between 5 and 7, the solution is a: -
ANSWER-weak acid
If the pH of a solution is between 1 and 3 the solution is a: -ANSWER-
strong acid
If the pH of a solution is between 7 and 9 the solution is a: -ANSWER-
weak alkali
