Question Library
Browse, filter, and study verified past examination questions with step-by-step mathematical reasoning.
Searching 18,000+ Questions...
Sifting topics, KaTeX formulas & verified solutions
Showing 5701–5715 of 14893 verified questions
Sort by:
Chemistry
UTME / JAMB 2010
Organic Chemistry I: Hydrocarbons & Crude Oil
Solution
Which of the following is used as fuel in miners' lamp?
A
Ethanal
B
Ethyne
C
Ethene
D
Ethane
medium Difficulty
Verified Correct Answer: Option B
Chemical Principles & Mechanism
Ethyne is a sometimes used a fuel in miners'lamps.
Source: WAEC / JAMB / NECO Classroom Archive (Record #4500)
Chemistry
UTME / JAMB 2010
Organic Chemistry I: Hydrocarbons & Crude Oil
Diagram
Solution
The IUPAC nomenclature of the compound above is?
Attached Figure / Diagram
A
4 - ethyloctane
B
5 - ethyloctane
C
5 - propylheptane
D
3 - propylheptane
medium Difficulty
Verified Correct Answer: Option A
Chemical Principles & Mechanism
Adhering to the basic naming rules, this compound is identified as 4 - ethyloctane
Source: WAEC / JAMB / NECO Classroom Archive (Record #4499)
Chemistry
UTME / JAMB 2010
Organic Chemistry I: Hydrocarbons & Crude Oil
Solution
One of the major uses of alkane is?
A
as domestic and industrial fuel
B
in the hydrogenation of oils
C
in the textile industries
D
in the production of plastics
medium Difficulty
Verified Correct Answer: Option A
Chemical Principles & Mechanism
- Alkanes will react with Oxygen if they are given sufficient Activation Energy. This will result in a highly Exothermic reaction, producing Carbon Dioxide and Water, which makes Alkanes very useful as fuels.
Source: WAEC / JAMB / NECO Classroom Archive (Record #4682)
Chemistry
UTME / JAMB 2010
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Solution
Coffee stains can best be removed by?
A
Kerosine
B
turpentine
C
a solution of borax in water
D
ammonia solution
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
Borax solution refers to sodium borax in water. it is used for cleaning purposes. borax is mildly alkaline and can help break down acidic stains, such as those from coffee
Source: WAEC / JAMB / NECO Classroom Archive (Record #4477)
Chemistry
UTME / JAMB 2010
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Solution
Benzene reacts with hydrogen in the presence of nickel catalyst at 180ºC to give?
A
xylene
B
toluene
C
cyclopentane
D
cyclohexane
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
Cyclohexane is formed when Benzene (vapor) undergoes addition reaction with hydrogen in the presence of nickel catalyst at 180^\circC
Source: WAEC / JAMB / NECO Classroom Archive (Record #4502)
Chemistry
UTME / JAMB 2010
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Solution
Which of the following is used to hasten the ripening of fruit?
A
Ethene
B
Ethanol
C
Ethyne
D
Ethane
medium Difficulty
Verified Correct Answer: Option A
Chemical Principles & Mechanism
Ethylene is a plant hormone produced during fruit ripening which mobilizes the genes to synthesize the enzymes which are responsible for fruit ripening.
Source: WAEC / JAMB / NECO Classroom Archive (Record #4503)
Chemistry
UTME / JAMB 2010
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Solution
The correct order of increasing boiling points of the following compounds C3H7OH, C7H16 and C4H10 is?
A
C3H7OH → C4H10 → C7H10
B
C4H10 → C7H16 → C3H7OH
C
C7H16 → C3H7OH → C4H10
D
C4H10 → C3H7OH → C7H16
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
C3H7OH ( PROPANOL) ⇒ 97ºC
C7H16 ( HEPTANE ) ⇒ 98.42ºC ;and
C4H10 ( BUTANE ) ⇒ -1ºC
ALTERNATIVELY,
In general, the higher the molecular mass of a substance, the higher its boiling point. This is because larger molecules have more intermolecular forces of attraction, which must be overcome for the substance to boil. If the molecular masses of each of the compounds are calculated, propanol (60g/mol), heptane(100g/mol) while butane(58g/mol).
Arrangement in increasing order will be C4H10 → C3H7OH → C7H16 - Option D
Source: WAEC / JAMB / NECO Classroom Archive (Record #4505)
Chemistry
UTME / JAMB 2010
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Solution
Two hydrocarbons X and Y were treated with bromine water. X decolorised the solution and Y did not not. Which class of compound does Y belong?
A
Benzene
B
Alkynes
C
Alkenes
D
Alkanes
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
Bromine water is an orange solution of bromine. It becomes colorless when it is shaken with an alkene. Alkenes can decolorize bromine water, but alkanes cannot.
X is ethene which decolorizes bromine water showing that ethene is unsaturated.
Y is an alkane.
Source: WAEC / JAMB / NECO Classroom Archive (Record #4687)
Chemistry
UTME / JAMB 2010
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Solution
The compound that is used as an anesthetic is?
A
CCl4
B
CH Cl3
C
CH2Cl2
D
CH3Cl
medium Difficulty
Verified Correct Answer: Option B
Chemical Principles & Mechanism
- Chloroform / tricholoromethane ( CHCl\(_3\) ) is a potent anaesthetic agent.
- Though Chloroform is no longer used as an anaesthetic for several reasons, the most important of which is the relatively high risk of complications, including possible heart failure
Source: WAEC / JAMB / NECO Classroom Archive (Record #4689)
Mathematics
UTME / JAMB 2010
Linear, Simultaneous & Quadratic Equations
Solution
Solve for x and y if x - y = 2 and x\(^2\) - y\(^2\) = 8
A
(-1, 3)
B
(3, 1)
C
(-3, 1)
D
(1, 3)
medium Difficulty
Verified Correct Answer: Option B
Step-by-Step Mathematical Solution
x - y = 2 ...........(1)
x\(^2\) - y\(^2\) = 8 ........... (2)
x - 2 = y ............ (3)
Put y = x - 2 in (2)
x\(^2\) - (x - 2)\(^2\) = 8
x\(^2\) - (x\(^2\) - 4x + 4) = 8
x\(^2\) - x\(^2\) + 4x - 4 = 8
4x = 8 + 4 = 12
x = \(\frac{12}{4}\)
= 3
from (3), y = 3 - 2 = 1
therefore, x = 3, y = 1
Source: Myschool Past Questions Archive (Record #29568)
English Language
UTME / JAMB 2010
Concord (Subject-Verb Agreement)
Solution
Select the option that best explains the information conveyed in the sentence.
People are not interested in who rules?
A
People are not ruled by the leaders they want
B
People are not concerned about who rules them
C
The rulers are not concerned about the people
D
People who rule are not intersested in the ruled
medium Difficulty
Verified Correct Answer: Option B
Grammar & Contextual Explanation
The sentence “People are not interested in who rules” means that the people do not care about who governs them.
Source: Myschool Past Questions Archive (Record #12529)
English Language
UTME / JAMB 2010
Concord (Subject-Verb Agreement)
Solution
Select the option that best explains the information conveyed in the sentence.
The witness said he had no axe to grind with his brothers?
A
He had no hatred for the brothers
B
He had no axe and therefore stole the matchet
C
He had no axe and therefore borrowed their matchet
D
He had no vested interest in the brothers.
medium Difficulty
Verified Correct Answer: Option A
Grammar & Contextual Explanation
To not have a grievance with someone
Source: Myschool Past Questions Archive (Record #12530)
English Language
UTME / JAMB 2010
Tenses, Aspect & Conditionals
Solution
Select the option that best explains the information conveyed in the sentence.
The footballers moved with their tails between their legs?
A
They moved happily because they won the match
B
They were unhappy because they had been despised by their opponents
C
They were ashamed because they had been defeated
D
They moved with their tails between their legs
medium Difficulty
Verified Correct Answer: Option C
Grammar & Contextual Explanation
feeling ashamed, embarrassed or unhappy because you have been defeated or punished
Source: Myschool Past Questions Archive (Record #12532)
English Language
UTME / JAMB 2010
Concord (Subject-Verb Agreement)
Solution
Select the option that best explains the information conveyed in the sentence.
The headmaster managed to talk his way out of having to give a speech.
A
He delieverd a speech despite the difficulty
B
He managed to give a speech out of a difficult situation
C
He managed to get himself out of a difficult situation
D
He managed to talk on his way
medium Difficulty
Verified Correct Answer: Option C
Grammar & Contextual Explanation
He manoeuvred his way and ended up not giving a speech.
Source: Myschool Past Questions Archive (Record #12535)
English Language
UTME / JAMB 2010
Concord (Subject-Verb Agreement)
Solution
Select the option that best explains the information conveyed in the sentence.
As regards the matter, we have crossed the rubicon
A
We are completely at loss
B
We are irrevocably committed
C
We are already qualified
D
We are perfectly committed
medium Difficulty
Verified Correct Answer: Option B
Grammar & Contextual Explanation
you mean that they have reached a point of no return. final decision
Source: Myschool Past Questions Archive (Record #12536)