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The type of chemical bond that exists between potassium and oxygen in potassium oxide is
Electrovalent compounds are characterized by
An element Z has a combining power of 3. Which of the following formulae is correct of its compounds?
Chlorine atom forms \(Cl^{-}\) by
The atoms of four elements are represented as 20Q, 16R, 10S and 8T Which of the elements would be unreactive?
The compound above is an
Use the option above to answer this question. The graph that describes a zero order reaction is
The diagram above is the solubility curve of a solute, X. Find the amount of X deposited when 500cm3 of a solution of X is cooled from 60oC to 20oC.
Sucrose is made up of
Alkanones are generally obtained by the oxidation of
The reaction of carbide with water gives
The chlorinated alkane often used industrially to remove grease is
The conditions necessary for the extraction of a water molecule from two molecules of ethanol are
Unsaturated organic compounds are identified by decolourization of
The repeating unit in natural rubber is
The least easily oxidized of the metals below is?
Haematite is an ore of
A common characteristics of copper and silver in their usage as coinage metals is that they
Potassium vapour burns with a
Synthesis gas is a mixture of