Is air compressible?

• Yes

• No

Which of the following people are supposed to have discovered Oxygen

• Joseph Priestly

• Carl Wilhelm Scheele

• Antoine Lavoisier

• All of the above

The atomic number of oxygen is ______.

• 17

• 8

• 56

• 9

Oxygen combines with elements to form _____________.

• Oxides

• Mixtures

• Oxidations

Oxygen is the most abundant gas in air.

• True

• False

Is oxygen a metal or a non-metal?

• Metal

• Non-metal

• Metalloid

• Noble gas

What is the colour of solid and liquid oxygen?

• Dark blue

• Pale blue

• Pale yellow

• Pale pink

What other colours does oxygen exist in?

• Pink

• Orange

• Red

• Brown

On the basis of abundance at which level is oxygen?

• 5th

• 3rd

• 1st

• 15th

Which is more soluble in water?

• Oxygen

• Nitrogen