Among the different components of air that we breathe in, which gas is most useful to us?

Carbon Dioxide

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Nitrogen

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Oxygen

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Argon

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Solution

The correct option is C
Oxygen

We all need oxygen gas to for generating energy from the food we eat. During this process carbon dioxide is released.

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Similar questions

Q. Which of the following is not a component of air that we normally breathe in -
(A)Oxygen
(B) Water vapour
(C)Carbon-dioxide
(C) Nitrogen

Q. A self-contained breathing' apparatus uses potassium superoxide,

K O_{2}

, to convert the carbon dioxide and water in exhaled air into oxygen, as shown by the equation:

4 K O_{2} (s) + 2 H_{2} O (g) 4 C O_{2} (g) \to 4 K H C O_{3} (s) + 3 O_{2} (g)

How many molecules of oxygen gas will be produced hem 0.0468 g of carbon dioxide that is exhaled in a typical breath?

Q. State whether the following statements are true or false.
(a) Air consists of a single substance.
(b) When water is poured into a glass, air is pushed out of the glass.
(c) Trees need oxygen for photosynthesis.
(d) When we exhale, we give out the carbon dioxide produced in the body.
(e) The amount of water vapour in the air is always the same.
(f) Nitrogen is required by plants to make proteins.
(g) Aircrafts fly in the ionosphere as there is less friction in this zone.
(h) One per cent of air contains carbon dioxide, argon, helium, argon and krypton-all of which are inert gases.
(i) LPG and CNG burn using oxygen gas and release carbon dioxide gas.
(j) Nitrogen in the air also helps in burning.

Fractional distillation is the separation of a mixture into its component or fractions. This process is based on difference in boiling point of the components in the mixture. This is a special type of distillation.

Air is a homogeneous mixture of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases such as helium, krypton, nitrogen dioxide etc.

Consider three gases oxygen, nitrogen and argon whose boiling points are: -183, -196, -186 degree celsius. They are to be separated from air using fractional distillation.

Air is compressed by increasing pressure and is then cooled by decreasing the temperature to form liquid air. This liquid air is allowed to warm-up slowly in a fractional distillation column, where gases get separated at different heights depending upon their boiling points. As the height of tower increases the temperature increases.

Among the three gases, which gas is collected at last?

Q. Atmospheric air contains the following in varying amounts
(a) Nitrogen
(b) Carbon dioxide
(c) Argon
(d) Oxygen

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Among the different components of air that we breathe in, which gas is most useful to us?

The correct option is C Oxygen We all need oxygen gas to for generating energy from the food we eat. During this process carbon dioxide is released.

The correct option is C
Oxygen

We all need oxygen gas to for generating energy from the food we eat. During this process carbon dioxide is released.