1981
An element X has 127 neutrons and 82 electrons. Its atomic number is?
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1981 JAMB UTME Chemistry Past Questions
1981
Methane is member of the homologous series called?
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1981
The oxidation number of manganese in KMnO4 is?
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1981
An example of a strong electrolyte is?
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1981
When glowing splint is inserted into the mouth of a jar containing a gas, the splint is extinguished. The gas gives a white precipitate when passing into barium hydroxide. The gas is?
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1981
When a bottle of Coca-Cola is opened, bubbles of evolve. The gas is?
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1981
The number of atoms in one mole of a substance is equal to?
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1981
Oxidation is the process of?
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1981
Sodium and potassium belong to the same group of the Periodic Table. This is because?
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1981
The mass number of an atom is?
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1981
For iron to rust, there should be present?
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1981
Which of the following processes takes place during electrolysis?
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1981
The brown coloration in nitric acid prepared in the laboratory can be removed by?
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1981
In the reactionC + 2HNO3 → CO2 + NO2 + NO + H2O nitric acid is acting as?
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1981
If concentrated sulphric acid is added to sugar and warmed gently, the sugar changes from white to brown and finally to a black mas of carbon. In this reaction, concentrated sulphuric acid is acting as ?
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1981
Which of the following statements is NOT true of electrovalent compounds?
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1981
Which of the following is the electronic configuration of sodium? (Atomic number of Na = 11)
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1981
A polymerization reaction is one in which?
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1981
Allotropes are elements having?
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1981
Which of the following can have an isomer?
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