Tests For Common Gases

Question 1

Ammonia NH3

Answer 1

Damp red litmus paper turned blue

RED》》》BLUE

Question 2

Carbon dioxide CO2

Answer 2

A gas is produced, which when bubbles into limewater, turns it milky

LIMEWATER》》》MILKY COLOUR

Question 3

Chlorine Cl2

Answer 3

Damp blue litmus paper is reddened and then bleached.

BLUE》》》RED»BLEACHED

Question 4

Hydrogen H2

Answer 4

A lighted splint is brought up the tube. A pop or squeak denotes hydrogen.

Question 5

Oxygen O2

Answer 5

A glowing splint is relighted.

Question 6

Sulfur dioxide SO2

Answer 6

Turns AQUEOUS POTASSIUM MANGANATE

PURPLE》》》COLOURLESS

Question 7

Damp red litmus paper turned blue

RED》》》BLUE

Answer 7

Ammonia NH3

Question 8

A gas is produced, which when bubbles into limewater, turns it milky

LIMEWATER》》》MILKY COLOUR

Answer 8

Carbon dioxide CO2

Question 9

Damp blue litmus paper is reddened and then bleached.

BLUE》》》RED»BLEACHED

Answer 9

Chlorine Cl2

Question 10

A lighted splint is brought up the tube. A pop or squeak denotes hydrogen.

Answer 10

Hydrogen H2

Question 11

A glowing splint is relighted.

Answer 11

Oxygen O2

Question 12

Turns AQUEOUS POTASSIUM MANGANATE

PURPLE》》》COLOURLESS

Answer 12

Sulfur dioxide SO2