Part - B (General Studies) NDA/NA SOLVED PAPER 2018 (II) (51 to 100)

Total Questions: 50

1. Read the following statements and answer the given questions:

Statement I The pitch of sound wave depends upon its frequency.
Statement II The loudness of the sound wave depends upon its amplitude.

(a) Both the statements are individually true and Statement II is the correct explanation of Statement I
(b) Both the statements are individually true but Statement II is not the correct explanation of Statement I
(c) Statement I is the true but Statement II is false
(d) Statement I is false but Statement II is true

Correct Answer: (b) Both the statements are individually true but Statement II is not the correct explanation of Statement I

Solution:

Pitch of sound wave depends upon its frequency because pitch of a sound is actually its property due, to which we can differentiate between a shrill and grave sound. The amplitude of a sound wave determines its loudness or volume.

2. Read the following statements and answer the given questions:

Statement I Sound wave cannot propagate in vacuum.
Statement II Sound waves are elastic waves and require a medium to propagate.

(a) Both the statements are individually true and Statement II is the correct explanation of Statement I
(b) Both the statements are individually true but Statement II is not the correct explanation of Statement I
(c) Statement I is the true but Statement II is false
(d) Statement I is false but Statement II is true

Correct Answer: (a) Both the statements are individually true and Statement II is the correct explanation of Statement I

Solution:

Sound waves are elastic waves because their propagation depends on the material media, which possess elasticity and inertia. So it cannot propagate in vacuum.

3. Read the following statements and answer the given questions:

Statement I The Government of India Act, 1935 introduced Dyarchy at the centre.
Statement II The provincial autonomy was granted to the Provinces.

(a) Both the statements are individually true and Statement II is the correct explanation of Statement I
(b) Both the statements are individually true but Statement II is not the correct explanation of Statement I
(c) Statement I is the true but Statement II is false
(d) Statement I is false but Statement II is true

Correct Answer: (b) Both the statements are individually true but Statement II is not the correct explanation of Statement I

Solution:

Government of India Act of 1935 marked a milestone towards a completely responsible government in India. It was a lengthy and detailed document having 321 Sections and 10 Schedules. The Act provided for the adoption of dyarchy at the Centre. Consequently, the federal subjects were divided into reserved subjects and transferred subjects. And abolished dyarchy in the provinces and introduced ‘provincial autonomy’ in its place.

4. Read the following statements and answer the given questions:

Statement I Mughal Painting reached its climax during the reign of Jahangir.
Statement II Aurangzeb’s Court was adorned by some of the best known artists of the Mughal School of Paintings.

(a) Both the statements are individually true and Statement II is the correct explanation of Statement I
(b) Both the statements are individually true but Statement II is not the correct explanation of Statement I
(c) Statement I is the true but Statement II is false
(d) Statement I is false but Statement II is true

Correct Answer: (c) Statement I is the true but Statement II is false

Solution:

During the reign of Jahangir (1605–1627) the Mughal painting reached its zenith. He favoured paintings of events from his own life rather than illustrated fiction.
He encouraged portraiture and scientific studies of birds, flowers and animals, which were collected in albums. Mansur and Manohar were among his famous painters. But during the reign of Aurangzeb (1659–1707) the Mughal painting started to decline, although his ornate Pearl Mosque (1662) at Delhi is worthy of mention.
Many artists then joined Rajput courts, where their influence on Hindu painting is clearly evident.

5. Read the following statements and answer the given questions:

Statement I Phytoplanktons produce most of the organic carbon in the ocean.
Statement II Algae are produced in the cold water biome.

(a) Both the statements are individually true and Statement II is the correct explanation of Statement I
(b) Both the statements are individually true but Statement II is not the correct explanation of Statement I
(c) Statement I is the true but Statement II is false
(d) Statement I is false but Statement II is true

Correct Answer: (d) Statement I is false but Statement II is true

Solution:

Algae are a diverse group of aquatic organisms that have the ability to conduct photosynthesis, for example, seaweeds (such as kelp or phytoplankton), pond scum or the algal blooms in lakes. They are
produced in the cold water biome. Phytoplanktons are similar to terrestrial plants. They contain chlorophyll and require sunlight in order to live and grow. They produce oxygen as a byproduct of photosynthesis.

6. Read the following statements and answer the given questions:

Statement I Geostrophic wind blows above a height of 600 m, parallel to the isobars.
Statement II Geostrophic wind is the horizontal wind velocity, in which the Coriolis force balances the horizontal pressure force.

(a) Both the statements are individually true and Statement II is the correct explanation of Statement I
(b) Both the statements are individually true but Statement II is not the correct explanation of Statement I
(c) Statement I is the true but Statement II is false
(d) Statement I is false but Statement II is true

Correct Answer: (c) Statement I is the true but Statement II is false

Solution:

An air parcel initially at rest, but it moves from high pressure to low pressure because of the Pressure Gradient Force (PGF). However, as that air parcel begins to move, it is deflected by the Coriolis force to the right in the Northern hemisphere (to the left on the Southern hemisphere).
As the wind gains speed, the deflection increases until the Coriolis force equals the pressure gradient force. At this point, the wind will be blowing parallel to the isobars.
When this happens, the wind is referred to as geostrophic wind. It blows above the height of 600 m at the upper atmosphere

7. Which one of the following groups of cellular organelles contains DNA?

(a) Mitochondria, nucleus, chloroplast
(b) Mitochondria, Golgi bodies, nucleus
(c) Mitochondria, plasma membrane, nucleus
(d) Chloroplast, nucleus, ribosomes

Correct Answer: (a) Mitochondria, nucleus, chloroplast

Solution:

The Mitochondria, nucleus and chloroplast contain DNA. Mitochondria and chloroplasts are known as semiautonomous cell organelles because they can replicate themselves.