Chemistry
Paper 1 | Objectives | 64 Questions
JAMB Exam
Year: 2015
Level: SHS
Time:
Type: Question Paper
Answers provided
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Paper 1 | Objectives | 64 Questions
JAMB Exam
Year: 2015
Level: SHS
Time:
Type: Question Paper
Answers provided
No description provided
This paper is yet to be rated
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| # | Question | Ans |
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| 1. |
The filter in the cigarette reduce the nicotine construct by A. burning B. adsorption C. evaporation D. absorption
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Detailed SolutionThe acetate and paper modify the particulate smoke phase by particle retention (filtration), and finely divided carbon modifies the gaseous phase (adsorption)There is an explanation video available below. |
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| 2. |
Which of these require crystallization most? A. Drug making B. Cement making C. Paint making D. Perfume making |
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| 3. |
Iron is often galvanized in order to A. Make it more malleable B. Remove the impurities unit C. Protect it against corrosion D. Render it passive |
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| 4. |
In the industrial production of H2 from water gas the CO2 produced along with the H2 is removed by A. washing under pressure B. drying over phosphorus (V) oxide C. passing the mixture to the limewater D. using ammonical copper (I) chlorine
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Detailed SolutionWashing under pressure is an action in the industrial production of H. Options B,C,D will not yield Co and HThere is an explanation video available below. |
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| 5. |
The gas that is most useful in protecting humans against solar marathon is A. chlorine B. ozone C. carbon IV oxide D. hydrogen sulphide
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Detailed SolutionThe ozone layer or ozone shield refers to a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet (UV) radiation. It contains high concentrations of ozone (O3) relative to other parts of the atmosphere, although still very small relative to other gases in the stratosphereThere is an explanation video available below. |
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| 6. |
Vulcanization involve the removal of A. monometer B. the single bond C. the double bond D. a polymer |
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| 7. |
The acid in electrolysis of water is dilute A. HNO3 B. CH3COOH C. H2SO4 D. HCl
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Detailed SolutionHeSO4 is the acid used in the electrolysis of water. Option A,B,D are concentrated acid and they will react with the waterThere is an explanation video available below. |
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| 8. |
A small quantity of solid ammonium chloride (NH4Cl) heated gently in a test tube, the solid gradually disappear produce two gases. Later, a white cloudy deposit was absence on the cooler part of the test tube. The ammonium chloride is to have undergo A. distillation B. sublimation C. precipitation D. evaporation
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Detailed SolutionSublimation is the transformation of solid gaseous state without passing through the liquid state. Options A,C,D do not show case these character of sublimation as they do not bye pass states. They are in a particular orderThere is an explanation video available below. |
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| 9. |
When salt loses its water of crystallization to the atmosphere on exposure, the process is said to be A. efflorescence B. déliquescence C. effervescence D. fluorescence |
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| 12. |
The weakest attractive force that can be observed between two molecules is A. ionic B. covalent C. co-ordinate covalent D. vander Waals |
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| 13. |
Preview displays only 13 out of the 64 Questions