Properties and Uses of Carbon Dioxide

Q. Carbon dioxide is a gas which doesn't support combustion.

1. True
2. False

Q.

We all love the fizz sound that comes from the bubbles which come out of a soft drink bottle but what gas are those bubbles made of?

1. $N_2$

2. $C{l}_2$

3. $C{O}_2$

4. $O_2$

Q. What is Dry Ice or Solid Carbon dioxide?

Q.

Which of the following substances are supporters of combustion?

1. Oxygen

2. Hydrogen

3. Lead bromide

4. Nitrogen

Q.

State whether the following statements are true or false. Rewrite the false statements correctly.

Carbon dioxide gas supports combustion.

1. True
2. False

Q.

${\mathrm{CCl}}_4$cannot be used as______

Q.

which among the following are the properties of oxygen ?

1. Colourless

2. Odourless

3. Insoluble in water

4. Supports Combustion

Q.

Which of the following are the uses of ${\text{CO}}_2$?

1. As a fire extinguisher

2. In preparation of aerated water

3. In artificial respiration

4. Used in the manufacture of washing soda

Q.

Which of the following is true about $C{O}_2$?

1. It is a colourless, odourless and tasteless gas

2. It dissolves in water to form carbonic acid.

3. It reduces to CO When passed through red hot coke

4. It can turn lime water milky

Q.

Give reason for the following:

Why are naphthalene balls kept in cupboards?

Q.

Which of the following processes is not responsible for liberation of carbon dioxide?

1. Respiration

2. Photosynthesis

3. Burning of fuels

4. None of these

Q.

Give some important uses of bases

Q.

Which of the following is/are uses of $C{O}_2$?

1. In artificial respiration

2. As a fire extinguisher

3. In preparation of aerated water

4. None of these

Q. $C{O}_2$ is used in fire extinguishers as,

1. 2Na + 2 +

2. 2Na + 2 +

3. 2 Na + +

4. No reaction

Q.

HOW TO MAKE DRY ICE?

Q.

Solid $C{O}_2$ is used as a refrigerant.

1. True

2. False

Q.

Which of the following is composed of carbon, oxygen and hydrogen?

1. Carbohydrate

2. Brine solution

3. Magnesium chloride solution

4. Ozone

Q. During ____ process, carbon dioxide is not produced.

1. Photosynthesis
2. Respiration
3. Burning of fuels
4. None of these

Q.

Assertion: Carbon dioxide is used in fire extinguishers.

Reason: Carbon dioxide is a colourless and odourless gas.

1. Both assertion and reason are true and the reason is the correct explanation for the assertion.

2. Both assertion and reason are true but the reason is not the correct explanation for the assertion.

3. The assertion is true but the reason is false.

4. The assertion is false but the reason is true.

Q.

Which of the following is true about $C{O}_2$?

1. It is a colourless, odourless and tasteless gas

2. It dissolves in water to form carbonic acid.

3. It reduces to CO When passed through red hot coke

4. It can turn lime water milky

Q.

Dry ice is

1. Gaseous carbon dioxide

2. Liquid carbon dioxide

3. Solid carbon dioxide

4. Carbon Dioxide in any state

Q. What are the constituents of carbogen?

1. 95% of $O_2$ and 5% of $C{O}_2$
2. 70% of $O_2$ and 30% of $C{O}_2$
3. 50% of $O_2$ and 50% of $C{O}_2$
4. 30% of $O_2$ and 70% of $C{O}_2$

Q. The Vander Waals' constant ${}^{\prime }{a}^{\prime }$ for $C{O}_2$ gas is greater than that of $H_2$ gas. It means that the

1. strength of Vander Waals' force of $C{O}_2$ gas is less than that of $H_2$ gas
2. strength of Vander Waals' force of $C{O}_2$ gas is equal to that of $H_2$ gas
3. $H_2$ gas can be more easily liquified
4. $C{O}_2$ gas can be more easily liquified