Question

Answer these questions,
1. Is air a mixture or a compound?
2. Which gas is used to prepare urea?
3. Which gas supports burning?
4. Which gas is used to make carbonated drinks?
5. Which product is formed when an element reacts with oxygen?
6. Name some air pollutants.​

Answer 1

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1. Is air a mixture or a compound?

Ans:- Air is a mixture.

2. Which gas is used to prepare urea?

Ans:- Urea (NH2CONH2) is produced from ammonia (NH3) and gaseous carbon dioxide (CO2) at high pressure and relatively high temperature.

3. Which gas supports burning?

Ans:- Oxygen.

4. Which gas is used to make carbonated drinks?

Ans:- Carbon dioxide.

5. Which product is formed when an element reacts with oxygen?

Ans:-The reaction between oxygen and another element generally results in the formation of a binary compound known as an oxide. The reaction itself is known as oxidation.

6. Name some air pollutants.

Ans:-

1. Carbon monoxide.
2. Lead.
3. Nitrogen dioxide.
4. Ozone.
5. Particles.
6. Sulfur dioxide.

Answer 2

Answer:

1. Air is a mixture but not compound. Its constituents can be separated. For example: oxygen, nitrogen etc. by physical process.

2. Urea (NH2CONH2) is produced from ammonia (NH3) and gaseous carbon dioxide (CO2) at high pressure and relatively high temperature.

3. oxygen is the gas which supports burning.

4. carbon dioxide is used to make carbonated drinks.

5. The reaction between oxygen and another element generally results in the formation of a binary compound known as an oxide. The reaction itself is known as oxidation. For example, the oxidation reaction between oxygen and sodium produces sodium oxide.

6. Ozone (O3)

Nitrogen Oxides (NOx)

Carbon Monoxide (CO)

Sulfur Dioxide (SO2)

Particulate Matter (PM10 and PM2.5)