Which of the following gases has the highest composition in the air?

• Oxygen

• Nitrogen

• Inert gases

• Carbon dioxide

Which of the following is the reason of the increase in carbon dioxide in the air?

• I and II

• I, II and III

• I, II and IV

• All of the above

Tags

NGSS.MS-ESS3-5

What is observed in this activity?

• Colour of flame

• Production of heat

• Level of water in the gas jar

• Time taken for the candle to burn

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Why air is classified as a mixture?

• Separated by chemical method

• Density of air is low

• Air particles are difficult to separate

• Separated by undergo fractional distillation process

What is the most common gas in the air?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Water Vapor

What percentage of air is made up of oxygen?

• 78%

• 21%

• 1%

• 0.04%

Which gas in the air absorbs energy from sunlight?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Water Vapor

What is the concentration of carbon dioxide in the air?

• 78%

• 21%

• 1%

• 0.04%

Tags

NGSS.MS-LS1-6

What is the effect of rising CO₂ concentration in the air?

• Lower temperatures

• Rising temperatures

• No change in temperature

• Decreased sunlight

Tags

NGSS.MS-ESS3-5

Which gas is the second most abundant in Earth's atmosphere?

• Oxygen

• Nitrogen

• Argon

• Carbon Dioxide