Chemistry
Paper 1 | Objectives | 40 Questions
JAMB Exam
Year: 2021
Level: SHS
Time:
Type: Question Paper
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Paper 1 | Objectives | 40 Questions
JAMB Exam
Year: 2021
Level: SHS
Time:
Type: Question Paper
Answers provided
No description provided
This paper is yet to be rated
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| # | Question | Ans |
|---|---|---|
| 1. |
Give the common name for the following compound (CH\(_{3}\))\(_{2}\) CH CH\(_{2}\) -Br A. Isobutyl bromide B. Methyl bromide C. propyl bromide D. Butyl bromide
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Detailed SolutionCommon name : Isobutyl bromideIUPAC name : 1-Bromo-2-methylpropane Boiling point : 102°C Formula : C\(_4\)H\(_9\)Br There is an explanation video available below. |
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| 2. |
The enzyme that converts glucose to ethyl alcohol is? A. maltase B. zymase C. Diatase D. Invertase
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Detailed SolutionZymase is an enzyme complex that catalyzes the fermentation of sugar into ethanol and carbon dioxide. It occurs naturally in yeasts.There is an explanation video available below. |
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| 3. |
The scientist who stated that matter can be converted into energy is? A. Boyle B. Lavoiser C. Avogadro D. Einstein
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Detailed SolutionThe principle described by the physicist Albert Einstein's famous formula: E = mc^2, involves mass–energy equivalence.I.e. the relationship between mass and energy. There is an explanation video available below. |
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| 4. |
What is the IUPAC name for the following compound? HC\(\equiv\)CCH\(_{3}\) A. Acetylene B. Methyl acetylene C. Butanol D. Decanoic acid
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Detailed SolutionPropyne (methylacetylene) is an alkyne with the chemical formula HC\(\equiv\)CCH\(_{3}\)There is an explanation video available below. |
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| 5. |
What is the chemical name for the compound CuCO\(_{3}\)? A. Copper (iii) carbonate B. Copper (ii) carbonate C. Copper (i) carbonate D. Copper
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Detailed SolutionCopper(II) carbonate or cupric carbonate is a chemical compound with formula CuCO\(_{3}\)There is an explanation video available below. |
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| 6. |
A 'breath test' used by traffic police to check drunken driving uses? A. Tumeric on filter paper B. Silica gel coated with saliva nitrate C. Potassium permanganate-sulphuric acid D. Potassium dichromatic-sulphuric acid
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Detailed SolutionThe earliest developed breathalyzer was based on reaction of alcohol if present in the exhaled air with a cocktail of chemicals containing sulfuric acid, potassium dichromate, silver nitrate, and water. Silver nitrate catalyzes the reaction between alcohol and potassium dichromate in acidic medium.There is an explanation video available below. |
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| 7. |
Which one of the following is not a mixture? A. Air B. Mercury C. Milk D. Cement
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Detailed SolutionA mixture is a material made up of two or more different chemical substances which are not chemically combined.Mercury is a chemical element with the symbol Hg and atomic number 80. There is an explanation video available below. |
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| 8. |
Which of the following is a non-metal that remains liquid at room temperature? A. Chlorine B. Phosphorus C. Bromine D. Helium
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Detailed SolutionBromine is a chemical element with the symbol Br and atomic number 35. It is the third-lightest halogen and is a volatile red-brown liquid at room temperature that evaporates readily to form a similarly coloured vapour.There is an explanation video available below. |
Preview displays only 8 out of the 40 Questions