Part – B (General Studies) (English) NDA/NA SOLVED PAPER 2017 (II) (101 to 150)

Total Questions: 50

11. Consider the following movements :

1. Moplah Rebellion
2. Bardoli Satyagraha
3. Champaran Satyagraha
4. Salt Satyagraha
Which one of the following is the correct chronological order of the above ascending order?

Correct Answer: (b) 3-1-2-4
Solution:

The movements occurred in the following years:

  1. Champaran Satyagraha (3): 1917 (Gandhi's first active involvement in Indian politics).
  2. Moplah Rebellion (1): 1921 (An uprising by Muslim tenants against Hindu landlords in Kerala).
  3. Bardoli Satyagraha (2): 1928 (Led by Sardar Vallabhbhai Patel against land revenue increases).
  4. Salt Satyagraha (4): 1930 (Beginning of the Civil Disobedience Movement with the Dandi March).

12. Which one of the following travelogues has given an insight on the reign of Muhammed-bin-Tughlaq?

Correct Answer: (a) Ibn Battuta’s Rihla
Solution:

Ibn Battuta was a Moroccan traveler who visited India during the 14th century. He was appointed as a Qazi (judge) by Muhammad-bin-Tughlaq and recorded his observations in his book, Rihla. The other travelers mentioned (Bernier, Manucci, and Tavernier) visited India much later, during the Mughal era.

13. Which one of the following was not a Chishti Sufi saint?

Correct Answer: (d) Shaikh Bahauddin Zakariya
Solution:

Shaikh Bahauddin Zakariya was a leading saint of the Suhrawardiyya order, not the Chishti order. Khwaja Moinuddin (Ajmer), Baba Farid (Pakpattan), and Nizamuddin Auliya (Delhi) are all prominent pillars of the Chishti Silsila in India.

14. In April, 2017, India celebrated 100 years of Mahatma Gandhi’s:

Correct Answer: (c) Satyagraha in Champaran
Solution:

Mahatma Gandhi reached Champaran (Bihar) in April 1917 to look into the grievances of the indigo cultivators. 2017 marked the centenary (100th anniversary) of this event, which is considered India's first Civil Disobedience movement.

15. A rainbow is produced due to which one of the following phenomena?

Correct Answer: (a) Dispersion of light
Solution:A rainbow is formed by the dispersion, refraction, and total internal reflection of sunlight by water droplets in the atmosphere. The droplets act like tiny prisms, splitting white light into its constituent seven colors.

16. Bats detect obstacles in their path by receiving the reflected:

Correct Answer: (b) Ultrasonic waves
Solution:Bats use a process called echolocation. They emit high-frequency ultrasonic waves (above 20,000 Hz) that bounce off obstacles or prey and return to the bat's ears, allowing them to "see" in the dark.

17. The statement that ‘heat cannot flow by itself from a body at a lower temperature to a body at a higher temperature’, is known as:

Correct Answer: (c) Second law of thermodynamics
Solution:The Clausius statement of the Second Law of Thermodynamics specifically states that heat cannot spontaneously flow from a colder body to a hotter body without external work being done.

18. Which one of the following waves does not belong to the category of the other three?

Correct Answer: (d) Sound waves
Solution:X-rays, Microwaves, and Radiowaves are all types of Electromagnetic Waves; they do not require a medium to travel and move at the speed of light. Sound waves, however, are Mechanical Waves (longitudinal) that require a medium (solid, liquid, or gas) to propagate.

19. Which one of the following statements is not correct?

Correct Answer: (a) Human eye is a refracting system containing a diverging lens.
Solution:

This statement is incorrect because the human eye contains a converging (convex) lens, not a diverging lens.

  • Retina (b): Correct. Rods (light intensity) and Cones (color) convert light to signals.
  • Upside down (c): Correct. The eye's lens forms a real, inverted image on the retina; the brain flips it.
  • Judging positions (d): Correct. Binocular vision is essential for depth perception.

20. Which one of the following statements is not corect?

Correct Answer: (a) Ultrasonic waves cannot get reflected, refracted or absorbed.
Solution:

This statement is incorrect. Like all waves, ultrasonic waves can be reflected (used in SONAR), refracted (as they change mediums), and absorbed (which causes heating).

  • Defects (b): Correct. This is called Non-Destructive Testing.
  • Hard materials (c): Correct. Ultrasonic machining is used for brittle/hard materials.
  • Vacuum (d): Correct. Being mechanical waves, they require a medium and cannot travel through a vacuum.