Preparing Common Salt -2

To prepare copper sulfate using sulfuric acid, the sample that should be used is?

• copper carbonate

• copper metal

Calcium carbonate reacts with nitric acid to form?

• calcium oxide

• calcium nitrate

• calcium chloride

• calcium sulfate

Magnesium reacts with sulfuric acid to form?

• magnesium oxide

• magnesium carbonate

• magnesium sulfate

• magnesium nitrate

Acid react with metal to form

• salt+ carbon dioxide

• salt + hydrogen

• Salt + Water

• Salt + metal oxide

Acid reacts with metal carbonate to form

• Salt + hydroxide + water

• Salt + carbon dioxide

• salt + water

• Salt + carbon dioxide + water

A student performs a flame test on an unknown substance and observes a green flame. Which substance is she/he most likely using?

• Copper

• Lithium

• Potassium

• calcium

A student performs a flame test on an unknown substance and observes a silvery-white flame. Which substance is she/he most likely using?

• Lithium

• Calcium

• Aluminium

• Sodium

A student performs a flame test on an unknown substance and observes a golden-yellow flame. Which substance is she/he most likely using?

• magnesium

• lithium

• Sodium

• Caesium