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Chemistry
UTME / JAMB 2012
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Alkanals can be distinguished from alkanones by the reaction with
A
sudan lll stain
B
starch iodide paper
C
lithium tetrahydrido aluminate (lll)
D
fehling's solution
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #27501)
Chemistry
UTME / JAMB 2012
Organic Chemistry I: Hydrocarbons & Crude Oil
The isomers of C3H8O ARE
A
1 - propanol and 2 - propanol
B
1 - propanol and 1 - propanol
C
2 - propanol and 2 - propanone
D
2 - propanol and 1 - propanol
medium Difficulty
Verified Correct Answer: Option A
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #27502)
Chemistry
UTME / JAMB 2012
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Solution
Carbohydrates are large molecules with the molecular formula C\(_x\)(H\(_2\)O)\(_y\). In which of the following pairs is x not equal to y?
A
glucose and starch
B
maltose and starch
C
sucrose and fructose
D
galactose and starch
medium Difficulty
Verified Correct Answer: Option B
Chemical Principles & Mechanism
Glucose = C\(_6\)(H\(_2\)O)\(_6\)
= C\(_6\)H\(_{12}\)O\(_6\)
Maltose = C\(_{12}\) (H\(_2\)O)\(_{11}\)
= C\(_{12}\)H\(_{22}\)O\(_{11}\)
Starch = C\(_6\) (H\(_2\)O)\(_5\)
= C\(_6\)H\(_{10}\)O\(_5\)
Sucrose = C\(_{12}\) (H\(_2\)O)\(_{11}\)
= C\(_{12}\)H\(_{22}\)O\(_{11}\)
Fructose = C\(_6\)(H\(_2\)O)\(_6\)
= C\(_6\)H\(_{12}\)O\(_6\)
Source: Myschool Past Questions Archive (Record #27503)
Chemistry
UTME / JAMB 2012
Stoichiometry, Mole Concept & Volumetric Analysis
A compound contains 40.0% C, 6.7% H 53.3% O. If the molecular mass of the compound is 180, its molecular formula is [C =12, H =1,O]
A
CH2O
B
C3H6O3
C
C6H6O3
D
C6H12O6
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #27504)
Chemistry
UTME / JAMB 2012
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Solution
The saponification of an alkanoate to produce soap and alkanol involves
A
dehydration
B
esterification
C
hydrolysis
D
oxidation
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
Saponification is a specific type of ester hydrolysis that occurs under basic conditions, typically using a base like sodium hydroxide (NaOH) or potassium hydroxide (KOH), resulting in the formation of a carboxylate salt (soap) and an alcohol.
Source: Myschool Past Questions Archive (Record #27505)
Chemistry
UTME / JAMB 2012
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
2 - methyl propan -2- ol is an example of a
A
primary alkanol
B
secondary alkanol
C
tertiary alkanol
D
quartenary alkanol
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #27506)
Chemistry
UTME / JAMB 2012
Organic Chemistry I: Hydrocarbons & Crude Oil
Solution
Ethanol reacts with concentrated tetraoxosulphate (VI) acid at a temperature above 170\(^0\)C to form
A
ethanone
B
ethene
C
ethyne
D
ethanal
medium Difficulty
Verified Correct Answer: Option B
Chemical Principles & Mechanism
When ethanol reacts with concentrated sulfuric acid (H₂SO₄) at high temperatures (around 170^\circC), the major product is ethene (C₂H₄), along with water (H₂O).
C₂H₅OH → C₂H₄ + H₂O
Source: Myschool Past Questions Archive (Record #27507)
Chemistry
UTME / JAMB 2012
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
An example of oxidation - reduction enzyme is
A
amylase
B
protease
C
lipase
D
dehydrogenase
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #27508)
Chemistry
UTME / JAMB 2012
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
An example of oxidation - reduction enzyme is
A
amylase
B
protease
C
lipase
D
dehydrogenase
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Official Exam / Past Question Archive
English Language
UTME / JAMB 2012
Reading Comprehension, Summary & Composition
From the passage, one can say that all the ethnic groups have
A
different traditional religion with some elements of similarities
B
completely different religious practices
C
the same traditional religion
D
the same religious manifestation with common deities
medium Difficulty
Verified Correct Answer: Option A
Grammar & Contextual Explanation
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #29955)
English Language
UTME / JAMB 2012
Reading Comprehension, Summary & Composition
Solution
According to the first paragraph, Nigerians believe that the
A
supernatural and natural work co-exist
B
natural and supernatural worlds are antagonistic
C
supernatural world control natural world
D
supernatural world exploits the natural world
medium Difficulty
Verified Correct Answer: Option C
Grammar & Contextual Explanation
According to the passage there is a believe that there is an unseen supernatural world, apart from the natural world we see around us. This other world is inhabited by beings who are the source of our knowledge of good and evil.
Source: Myschool Past Questions Archive (Record #29958)
English Language
UTME / JAMB 2012
Reading Comprehension, Summary & Composition
Solution
Traditional religion has waned in Nigerian to the
A
influence of lslam over border
B
influence of Christianity over location
C
influence of non- traditional religion
D
decline of interest in traditional religions
medium Difficulty
Verified Correct Answer: Option C
Grammar & Contextual Explanation
From the passage it can be inferred that traditional religion has gone underground owing to the influence of non-traditional religion
Source: Myschool Past Questions Archive (Record #29963)
English Language
UTME / JAMB 2012
Reading Comprehension, Summary & Composition
Solution
Which factor is common to religions as mentioned in the passage
A
prayer only
B
divination
C
sac
D
ritual
medium Difficulty
Verified Correct Answer: Option B
Grammar & Contextual Explanation
Divination is the practice of seeking knowledge of the future or the unknown by supernatural means. From the passage, all the religious practice do it.
Source: Myschool Past Questions Archive (Record #29966)
English Language
UTME / JAMB 2012
Reading Comprehension, Summary & Composition
Solution
It can be inferred from the passage that
A
Nigerians have access to foreign books only
B
Nigerian undergraduates do not read text books
C
Nigerians read foreign and indigenous books alike
D
Nigerians read mostly foreign books
medium Difficulty
Verified Correct Answer: Option D
Grammar & Contextual Explanation
From the passage, we understand that Nigerians prefer to read foreign books.
Source: Myschool Past Questions Archive (Record #29999)
English Language
UTME / JAMB 2012
Reading Comprehension, Summary & Composition
Solution
The reason for lack of indigenous books in most renowned bookshop, according to the passage, is
A
Nigerians prefer reading foreign books
B
foreign books attract more buyers
C
indigenous books are sometimes not available
D
the low quality of indigenous books
medium Difficulty
Verified Correct Answer: Option B
Grammar & Contextual Explanation
That most of the bookshops preferred to stock foreign books because of higher demands for them
Source: Myschool Past Questions Archive (Record #30002)