Identification of ions and gases

Flame test is carried out on a sample, what color would be seen in the flame, if the sample is Potassium nitrate?

• blue-green

• red

• lilac

• orange

Few drops of silver nitrate solution are added to a solution W, a white precipitate forms, this confirms the presence of

• nitrate ions

• sulfate ions

• chloride ions

• bromide ions

Few drops of silver nitrate solution are added to a solution, cream precipitate forms, this confirms the presence of

• chloride ions

• iodide ions

• bromide ions

• silver ions

Few drops of silver nitrate solution are added to a solution, a yellow precipitate forms, this confirms the presence of

• Bromide ions

• Chloride ions

• Iodide ions

• sulfite ions

Few drops of barium nitrate solution are added to a solution, white precipitate forms, this confirms the presence of

• sulfate ions

• sulfite ions

• carbonate ions

• ammonium ions

Flame test is carried out on a sample, what color would be seen in the flame, if the sample is copper sulfate?

• blue green

• red

• orange

• lilac

Few drops of dilute sodium hydroxide solution are added to solution X, blue precipitate forms, this confirms the presence of

• copper ions

• iron (II) ions

• iron (III) ions

• Chromium (III) ions

Few drops of dilute sodium hydroxide solution are added to solution X, brown precipitate forms, this confirms the presence of

• iron (II) ions

• iron (III) ions

• copper (II) ions

• chromium (III) ions

Few drops of dilute sodium hydroxide solution are added to solution X, white precipitate insoluble in excess forms, this confirms the presence of

• calcium ions

• zinc ions

• aluminum ions

• chromium ions

Few drops of aqueous ammonia solution are added to solution X, white precipitate insoluble in excess forms, this confirms the presence of

• Aluminum ions

• zinc ions

• copper ions

• Chromium ions