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The mountaineers carry oxygen gas cylind...

The mountaineers carry oxygen gas cylinders with them while climbing high mountains . Give reasons.

A

Density of air is high at the altitudes

B

Density of air is low at the altitudes

C

Air is less pure at the altitudes

D

Air contains no oxygen at the altitudes

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The correct Answer is:
B
Less oxygen is avilable at altitude becauses density of air is low .
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  3. The mountaineers carry oxygen gas cylinders with them while climbing h...

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  6. The behaviour of temporary gases like CO(2) appoaches that a permanent...

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  7. An ideal gas cannot be liquified because

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  8. The relationship between P(C), V(C) and T(C) is

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  9. On heating a liquid its surface tension

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  10. At what temperature will both the Celsius and Fahrenheit scales read t...

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  11. Which of the following statements is correct about a liquid at constan...

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  12. If a gas expands at constant temperature

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  13. The equation representing Gay - Lussac 's law is

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  14. The strength of dispersion forces does not increases with increases in

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  15. Which of the following is applications of surface tension ?

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  16. Dipole moment is defined as the product of charge and the

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  17. modified Linde process such that the cooling becomes more efficient.

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  18. Liquds which are more volatile have forces of attraction.

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  19. Which of the following value of R is not correct ?

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  20. SI unit of pressure is

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