wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Identification of ions and gases

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

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

a)

blue-green

b)

red

c)

lilac

d)

orange

2.

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

a)

nitrate ions

b)

sulfate ions

c)

chloride ions

d)

bromide ions

3.

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

a)

chloride ions

b)

iodide ions

c)

bromide ions

d)

silver ions

4.

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

a)

Bromide ions

b)

Chloride ions

c)

Iodide ions

d)

sulfite ions

5.

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

a)

sulfate ions

b)

sulfite ions

c)

carbonate ions

d)

ammonium ions

6.

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

a)

blue green

b)

red

c)

orange

d)

lilac

7.

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

a)

copper ions

b)

iron (II) ions

c)

iron (III) ions

d)

Chromium (III) ions

8.

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

a)

iron (II) ions

b)

iron (III) ions

c)

copper (II) ions

d)

chromium (III) ions

9.

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

a)

calcium ions

b)

zinc ions

c)

aluminum ions

d)

chromium ions

10.

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

a)

Aluminum ions

b)

zinc ions

c)

copper ions

d)

Chromium ions

11.

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

a)

zinc ions

b)

aluminum ions

c)

chromium ions

d)

calcium ions

12.

Few drops of dilute ammonium hydroxide solution are added to solution X, grey-green precipitate forms, this confirms the presence of

a)

chromium ions

b)

iron (III) ions

c)

iron (II) ions

d)

copper ions

13.

few drops of HCl are added to a solution X, bubbles of gas that turns lime water forms, this confirms the presence of

a)

sulfate ions

b)

carbonate ions

c)

sulfite ions

d)

nitrate ions

14.

A small amount of sodium hydroxide solution and pieces of aluminum foil are added and the mixture is heated gently. An alkaline gas is released, this shows the presence of

a)

nitrate ions

b)

nitrite ions

c)

ammonium ions

d)

nitriseions

15.

A gas that turns paper soaked with acidified potassium manganate (VII) paper colorless

a)

chlorine

b)

ammonia

c)

oxygen

d)

sulfur dioxide