Drag and drop the following formula to their respective name of bases.

Test Observation in solution A Observation in solution B
Put dry blue litmus paper into A and B solution. Note the colour change if any.
Add a small clean piece of Magnesium ribbon into A and B solutions. Test the gas evolved if any with a burning splint
Add two to three small pieces of marble chips into A and B solutions. Test the gas evolved if any with aqueous Calcium Hydroxide