Gases

Question 1

Ammonia (NH3)

Answer 1

turns damp red litmus paper blue

Question 2

Carbon dioxide (CO2)

Answer 2

gives white ppt. with limewater (ppt. dissolves with excess CO2)

Question 3

Chlorine (Cl2)

Answer 3

bleaches damp litmus paper

Question 4

Hydrogen (H2)

Answer 4

pops’ with a lighted splint

Question 5

Oxygen (O2)

Answer 5

relights a glowing splint

Question 6

Sulfur dioxide (SO2)

Answer 6

turns aqueous acidified potassium manganate(VII) from purple to colourless