What JAMB Sets In Chemistry|What to read for jamb chemistry 2024
What JAMB Sets In Chemistry|What you should read for jamb chemistry 2024?
How does Jamb set chemistry questions?
Jamb sets chemistry questions from their question bank, I don’t think there are any new questions.
You need to relax, Chemistry isn’t difficult.
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How many questions in JAMB chemistry?
There will be 40 questions in Jamb Chemistry
What should I read for JAMB Chemistry?
Francium: this chemicals element has an Atomic number of 87 and a symbol of French and it life span is just 22 minutes. . When going through jamb questions and answers I have seen this question pop up repeated times
DIAMOND: this is recognized as one of the most hardest substance/ carbon. I will like you to go through your text books and perhaps study everything about diamond
Hydrogenation: this word simply means to treat with hydrogen. Hydrogenation is usually use to deplete most organic compound.
Please note that when you Hydrogenate Alkynes you will get Alkanes
Do you know that the law of Definite Proportion and Constant Composition are the same?
Should in case you don’t know please read this law and how they relate together.
Atomic number: I will advise you to study the periodic table carefully, if possible cram it because i have seen hundreds of questions that centered much on this area.
Electrons :study everything that has to do with electrons. Remember that electrons revolves around the atom.
Cantenation: try to understand what the term Cantenation is, note where they mostly occur.
Identify those elements that combine with carbon to form compound. I will list some here, please it’s your responsibility to read deeper in this areas.
Hydrogen
Oxygen
Chlorine
Nitrogen
Bromine
Phosphorus
TRY to understand why Pure substances have boiling and melting point
Some other things jamb do set in 2024/2025 chemistry
Jamb exam board are also known to ask questions on radioactive material. But example of radioactive material are:
Uranium,
Thorium
Polonium.
Viscosity: this means internal friction in fluid
When you Dissolves Calcium in water you get CaO.
Read more about the invention of Cathode ray tube whose idea was what gave birth to what we know as television.
Oxy-acetylene flame is mostly used in welding or joining two metals
Find out more information about R.A Millikan he stated that charge of an electron to be –1.60×10-19C (I have seen this question like 15 times in past jamb chemistry questions)
What jamb might set in 2024/2025 chemistry| Organic Chemistry
Note the form in which Aliphatic Hydrocarbons can exist.. Let me help you here they are:
Cyclic,
Acyclic
or Alicyclic.
Dmitri T. Mendeleev:study how he contributed to the development of the periodic table
CONGENERS: please understand what this term means and examples ( element in the same group)
They might ask you “what is the lightest gas?” Just have it in mind that it is Free Hydrogen (H2)
Understand the concept on how water boil (saturated vapor pressure = atmospheric pressure)
List factors affecting the boiling point ( study this point very well) let me help you to list them
volatility,
polarity
impurity.
Always understand that nuclear energy comes from nuclear fusion
And also understand that the sun energy is as a result of nuclear fusion
Another name for transmutation is still the same as Radioactivity
Understand that Florin is one of the most reactive non metal
Always have it in mind that nucleus is positive
Study about natural and artificial radioactive.
Do you know that zero is the lowest oxidation state of Iron? Please have this at the back of your mind
Read about the history of radioactive and who suggested the name (Marie Curie) and who discovered it (Antoine Becquerel)
Please understand that Quantum Numbers don’t point to atoms but ELECTRONS… (jamb uses this question to confuse candidates)
Top 40 questions that JAMB sets in Chemistry every year
Commonly repeated Jamb Chemistry Questions (1, 2 or even more might come out for you)
1 :- the element with an electron configuration 1s2 2s2 2p6 3s23p64s2
ANSWER =
a noble gas
2 :- ethanoic acid is monobasic because its
ANSWER =
has one replaceable hydrogen molecule
3 :- the type of bond in nitrogen molecule is
ANSWER =
covalent
Read : how to predict Jamb questions
4 :- in the hydrogenation of benzene, the catalyst used is
ANSWER =
Ni
5 :- the acid found in sour milk is
ANSWER =
lactic acid
6 :- transition metals with higher oxidation state will form oxides that are
ANSWER =
basic
7 :- the iupac nomenclature of the compound above is
ANSWER =
pent-2-yne
8 :- in the diagram above X is
ANSWER =
H2
9 :- if 200cm3 of oxygen passes through a porous plug in 100sec.find the time taken for the same volume of hydrogen to pass through the same porous plug
ANSWER =
25
10 :- the method used in purifying sugar is
ANSWER =
crystallization
11 :- the activation energy of a chemical reaction can be lowered by
ANSWER =
the addition of a catalyst
12 :- in the equation above X is
ANSWER =
CH3COOCH2CH3
13 :- a solubility curve is a plot of the solubility of solute against
ANSWER =
TEMPERATURE
14 :- the method that is not economical for the removal of hardness in water for town supply is
ANSWER =
permutit
15 :- in the electrolytic extraction of sodium from fused sodium chloride calcium chloride is usually added to
ANSWER =
remove impurities
16 :- grades of petrol having octane number nearer zero will cause a motor car engine to ‘
ANSWER =
17 :- nickel is plated on steel to
ANSWER =
increase its strength
18 :- the solubility in mol/dm3 of 20.2g of potassium trioxonitrate(V)dissolved in 100g of water at room temperature is
ANSWER =
2
19 :- what is the atomic number of an element having 127 neutrons and 82 electrons
ANSWER =
82
20 :- 28.80CM3 OF NITROGEN AT 15c is cooled to 0C.its volume at constant pressure is
ANSWER =
27.3
21 :- what physical property of alkane decreases as the number of carbon atoms increases
ANSWER =
solubility
22 :- which of the following substances are made by polymeriztion
ANSWER =
nylon and artificial rubber
23 :- which of the following compounds is unsaturated
ANSWER =
methylbenzene
24 :- a compound contains 31.9% potassium 28.93 chlorine and the remaining oxygen.what is the chemical formula of the compound?\
ANSWER =
KClO2
25 :- the use of neon light in aerodome beacons is due to its
ANSWER =
COLOUR
26 :- K4Fe(CN)6 is an example of a
ANSWER =
complex
27 :- if T change in s is small relative to change in H at room temperature the value of change in G will be
ANSWER =
positive
28 :- the solibility of alkanols in water is due to the presence of
ANSWER =
hydroxyl group
29 :- when lubricating oil is redistilled,it yields
ANSWER =
petroleum jelly
30 :- the iupac nomenclature of K2Cr2O7 SI
ANSWER =
potassium heptaoxochromate(VI)
31 :- ALKYNES BURN WITH SMOKY LUMINOUS FLAME DUE TO HIGH
ANSWER =
carbon content
32 :- ozone is known for its ability to
ANSWER =
attack the respiratory tract of organisms
33 :- which of the following properties is peculiar to graphite?
ANSWER =
it is unreactive
34 :- calculate the amount in moles of zinc that will be deposited by passing 10 faradays of elctricity through a solution of zinc salt
ANSWER =
5
35 :- the air pollutant that dissolves in water due to produce acid rain is
ANSWER =
O3
36 :- the property peculiar to pure oxygen is that it
ANSWER =
is lighter than air
37 :- the principal property that determines the method of an extraction of a metal from its oe is its
ANSWER =
position in the activity series
38 :- when water is added to calcium oxide,it forms
ANSWER =
calcium hydroxide
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39 :- in the reaction above, the reverse reaction can be favored by
ANSWER =
decreases the temperature
40 :- an element with electron configuration 1s2 2s2 2p6 3s2 3p4 belongs to the
ANSWER =
p-block
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Top Topics to read for JAMB Chemistry 2024
Separating techniques
How to determine empirical formula
Balancing of equation
Acid, Base, and Salt (Physical and Chemical properties, Neutralization rxn)
PH Scale
Isotopes
Electronic configuration
Gas Law
Redox reaction
Rate of chemical reaction (Le Chatelier’s principle)
Carbon and its compound
Hydrogen and its compound
Nitrogen and its compound
Sulphur and its compound
Allotropes
Aromatic and Aliphatic Hydrocarbon (Alkane, Alkene, Akyne, Benzene)
Isomerism
Alkanol
Alkanoic
Esterification
Hardness of water
Saponification
