Part – B (General Studies) NDA/NA SOLVED PAPER 2018 (I) (51 to 100)

Total Questions: 50

41. Which one of the following group of organisms forms a food chain?

Correct Answer: (b) Grass, goat and human
Solution:

The series of organisms in which one organism is being eaten by other is called food chain. The organisms given in the option (b) form the following food chain:
Grass (Producers) → Goat (Primary Consumer) → Human (Secondary Consumer)

42. Which one of the following types of tissues will have contractile proteins?

Correct Answer: (b) Muscle tissue
Solution:

Contractile proteins are found in muscles. These proteins are actin and myosin and they are, the main components of thin and thick filaments respectively.
Muscle contraction occurs when these filaments slide over one another in a series of repetitive events.

43. If by an unknown accident the acid secreting cells of the stomach wall of an individual are damaged. Digestion of' which one of the following biomolecule will be affected to a greater extent?

Correct Answer: (a) Protein only
Solution:

Pepsinogen is an inactive form of pepsin which is secreted by oxyntic cells. It is converted into active form called Pepsin in the presence of HCl.
Pepsin converts protein molecules into proteases, peptones and ultimately into amino acids. Hence, proteins will not be digested if acid secreting cells of stomach wall of an individual get damaged.

44. In which one of the following places, Headquarters of a Railway Zone is located?

Correct Answer: (c) Hajipur
Solution:

The East Central Railway (ECR) is one of the 17 railway zones in India. It is headquartered at Hajipur (Bihar) and comprises Sonpur, Samastipur, Danapur, Mughalsarai and Dhanbad divisions.

45. Which of the following statements about Indian Academy of Highway Engineers is/ are correct?

1. It is a registered society.
2. It is a collaborative body of both Central Government and State Governments.
Select the correct answer using the codes given below

Correct Answer: (d) Neither 1 nor 2
Solution:

Indian Academy of Highway Engineers is the apex training institute set-up to address the training needs of Highway and Bridge Engineers in the country. It was set-up as an Institute in the year 1983 with the primary objective to fulfill the need for training of highway engineers at the entry level and during the service.
It is neither a registered society nor is a collaboration between the central and the State Governments.

46. Which one of the following is NOT a tributary of Indus River?

Correct Answer: (d) Tawi
Solution:

The Tributaries of Indus include Beas, Chenab, Gar, Gilgit, Gomal, Hunza, Jhelum, Kabul, Kunar, Kurram, Panjnad, Ravi, Shyok, Soan, Suru, Satluj, Swat, Zanskar, Zhob.
Tawi is not one of the tributaries of Indus river. It is one of the left bank tributary of the Chenab River.

47. Which one among the following is the largest tiger reserve of India in terms of area of the core/critical tiger habitat?

Correct Answer: (c) Nagarjunasagar Srisailam
Solution:

Nagarjunsagar-Srisailam Tiger Reserve is the largest tiger reserve in India in terms of area of core and critical habitat.
The reserve spreads over five districts, Kurnool district, Prakasam district, Guntur district, Nalgonda district and Mahbubnagar district. The total area of the tiger reserve is 3,568 km2 (1,378 sq mi).

48. Which one of the, following is NOT a coastal depositional feature?

Correct Answer: (c) Stack
Solution:A stack or sea stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by wave erosion.
Stacks are formed over time by wind and water, processes of coastal geomorphology. All the other options are forms of coastal depositional landform.

49. Which of the following is/are coastal erosional feature (s)?

1. Notch
2. Sea Arch
3. Cliff
4. Hook
Select the correct answer using the codes given below

Correct Answer: (a) 1, 2 and 3
Solution:

A notch or small hollow is an indenture or a concave cut into a surface or edge (as in a coastline).
It is not an erosional feature Sea Arch and Cliff are examples of Coastline erosional features. A sea arch is a natural opening eroded out of a cliff face by marine processes.
Some arches appear to have developed from surge channels, which are created by wave refraction causing the focussing of wave fronts on the side of a headland. A cliff is a high area of rock with a very steep side, often on a coast.

50. Chemical weathering of rocks is much greater in a place with:

Correct Answer: (b) hot and humid climate
Solution:

Chemical Weathering results from chemical reactions between minerals in rocks and external agents like air or water.
Oxygen oxidizes minerals to alteration products whereas water can convert minerals to clays or dissolve minerals completely. It occurs majorly in areas with hot and humid climate.