Fri. Jan 10th, 2025

Atmospheric Pressure and Motion

  1. Which of the following statements about pressure gradient is/are correct

    1. Pressure gradient refers to the rate of change of pressure per unit horizontal distance between two points.
    2. Closely spaced isobars denote steep pressure gradient while widely spaced isobars indicate low pressure gradient.
    3. Pressure gradient is always perpendicular to the isobars.
    Options:
    1. 1 and 3
    2. Only 2
    3. 1 and 2
    4. All of the above

    Option: D

  2. The system of closed isobars wherein pressure decreases from the center to outward is known as

    Options:
    1. Low pressure systems
    2. High pressure systems
    3. Anticyclone
    4. Both b and c

    Option: C

  3. Which of the following statements about high pressure or anticyclone is/are correct

    1. It is more common in the subtropical high-pressure belts but are practically absent in the equatorial zone
    2. Characterized by divergent wind circulation
    3. Winds blow from the centre outward in clockwise direction in the northern hemisphere
    4. Winds blow from the centre outward in anti-clockwise in the southern hemisphere
    Options:
    1. 1, 3 and 4
    2. 2, 3 and 4
    3. 1 and 2
    4. All of the above

    Option: D

  4. Which of the following statements about high pressure or anticyclone is/are correct

    1. The high-pressure systems are indicative of dry weather conditions
    2. Anticyclones are called weather less phenomena
    3. Winds blow from the centre outward in clockwise direction in the southern hemisphere
    Options:
    1. 1 and 3
    2. Only 3
    3. 1 and 2
    4. 2 and 3

    Option: C

  5. An area of uniform pressure developed between two high pressure systems and two low pressure systems is called

    Options:
    1. Wedge
    2. Trough
    3. Col
    4. Eye

    Option: C

  6. The system of closed isobars wherein pressure increases from the center to outward is known as

    Options:
    1. Low
    2. Cyclones
    3. Depressions
    4. All of the above

    Option: D

  7. Which of the following statements about cyclone is/are correct

    1. It is also termed as atmospheric disturbances
    2. Characterized by convergent wind circulation
    3. Air blows inward in clockwise in the southern hemisphere
    4. Air blows inward in anti-clockwise in the northern hemisphere
    Options:
    1. 1, 3 and 4
    2. 2, 3 and 4
    3. 1 and 2
    4. All of the above

    Option: D

  8. The elongated outward extension of low pressure displayed by elliptical isobars is called

    Options:
    1. Cyclonic trough
    2. Eye
    3. Depressions
    4. Col

    Option: A

  9. There are_________ pressure belts on the globe.

    Options:
    1. Five
    2. Six
    3. Seven
    4. Three

    Option: C

  10. On the basis of mode of genesis pressure belts are divided into_________categories.

    Options:
    1. Two
    2. Three
    3. Seven
    4. Six

    Option: A

  11. The equatorial low-pressure belts are extending between 5°N and 5°S latitudes

    Options:
    1. 15°N and 15°S latitudes
    2. 5°N and 5°S latitudes
    3. 0°S and 5°S latitudes
    4. 0°N and 5°N latitudes

    Option: B

  12. The equatorial low-pressure belt represents the zone of convergence of

    Options:
    1. North-east and south-east winds
    2. North-west and south-east winds.
    3. North-west and south-west winds.
    4. North-east and south-west winds.

    Option: A

  13. The equatorial low-pressure belt is also called

    Options:
    1. Doldrum
    2. Belt of calm
    3. Both a and b
    4. None of the above

    Option: C

  14. Sub-tropical high’ Pressure belt extends between the latitude of

    Options:
    1. 25°- 35° in both the hemisphere
    2. 35°- 45° in both the hemisphere
    3. 45°- 55° in both the hemisphere
    4. 5°- 15° in both the hemisphere

    Option: A

  15. The zone of high pressure in this belt is called

    Options:
    1. Doldrum
    2. Belt of calm
    3. Horse latitude
    4. Both a and b

    Option: C

  16. Which of the following statements about Sub-Tropical High-Pressure Belt is/are correct

    1. This belt is dynamically induced
    2. This zone is characterized by anticyclonic conditions
    3. This zone is characterized by the presence of hot deserts of the world in the western parts of the continents
    4. This zone of high pressure is not continuous belt
    Options:
    1. 1, 3 and 4
    2. 2, 3 and 4
    3. 1 and 2
    4. All of the above

    Option: D

  17. The belt of sub-polar low pressure is located between

    Options:
    1. 25°- 35° in both the hemisphere
    2. 35°- 45° in both the hemisphere
    3. 45°- 55° in both the hemisphere
    4. 60°-65° in both the hemisphere

    Option: D

  18. Northern summer pressure and the winter pressure conditions are represented by.

    Options:
    1. July isobars
    2. June isobars
    3. January isobars
    4. December isobars

    Option: A

  19. The northern winter and southern summer pressure conditions are shown by

    Options:
    1. July isobars
    2. June isobars
    3. January isobars
    4. December isobars

    Option: C

  20. The pressure gradients in the northern hemisphere are recorded steeper in the month of

    Options:
    1. July
    2. June
    3. January
    4. December

    Option: C