Uses of Oxygen

Q.

Liquid _________ is used for burning fuel in the rockets. [nitrogen/oxygen].

Q. Write short notes on:

a. Rapid combustion
b. Spontaneous combustion
c. Explosion

Q. Question 27
People usually keep Angethi/burning coal in their closed rooms during winter season. Why is it advised to keep the door open?

Q. Which of the choices can best fill in the boxes I and II given below?

1. I - Oxygen, II - Respiration
2. I - Respiration, II - Carbon dioxide
3. I - Carbon dioxide, II - Oxygen
4. I - Respiration, II - Oxygen

Q.

Which of the following is/are the uses of oxygen?

1. Combustion

2. Bleaching

3. As an oxidant in rocket fuels

4. Artificial respiration

Q.

Which among the given options is the use of oxygen?

1. An oxidant in rocket fuel

2. Chlorofluorocarbons

3. As a refrigerant

4. In the manufacture of nitrogen fertilizers

Q. Which of the choices can best fill in the boxes I and II given below?

1. I - Respiration, II - Oxygen
2. I - Respiration, II - Carbon dioxide
3. I - Oxygen, II - Respiration
4. I - Carbon dioxide, II - Oxygen

Q. Which of the choices can best fill in the boxes I and II given below?

1. I - Carbon dioxide, II - Oxygen
2. I - Respiration, II - Carbon dioxide
3. I - Respiration, II - Oxygen
4. I - Oxygen, II - Respiration

Q.

Which of the choices can best fit in the boxes I and II given below?

1. I - carbon dioxide, II - oxygen

2. I - oxygen, II - respiration

3. I - respiration, II - carbon dioxide

4. I - respiration, II - oxygen

Q.

The gas present in the atmosphere which is essential for respiration is:

1. Hydrogen
2. Oxygen
3. Nitrogen
4. Carbon dioxide

Q.

The process in which oxygen is released into atmosphere is:

1. Photosynthesis

2. Combustion

3. Carbon cycle

4. Green house