pass each gas into lime water
pass each gas into water and test with litmus paper
pass each gas into concentrated sulphuric acid
expose each gas to atmospheric air
expose each gas to fumes of hydrogen chloride
Correct answer is A
No explanation has been provided for this answer.
The following salts are readily soluble in water except ...
The reaction between ammonia and ethyl ethanoate produces ...
What is the oxidation number of Z in K3ZCl6?...
The metal whose ore can be concentrated by passing it through a magnetic separator is ...
The furring of kettles is caused by the presence in the water of? ...
The catalyst used in the contact process for the manufacture of tetraoxosulphate (VI) acid is...
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is ...