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

Total Questions: 50

21. The principal use of hydrofluoric acid is:

Correct Answer: (a) in etching glass
Solution:

Hydrofluoric acid (HF) is unique because it reacts with silicon dioxide (SiO₂), the primary component of glass, to form water-soluble silicates. This property makes it essential for frosting or etching patterns into glass surfaces. It is also used in the semiconductor industry to clean silicon wafers.

22. Find the answer of given question?

Correct Answer: (c)
Solution:

23. The compound C₆H₁₂O₆ contains?

Correct Answer: (c) six times the mass percent of C as compared to the mass percent of H
Solution:

Let's calculate the mass percentages based on atomic masses (C=12, H=1, O=16):

  • Total Molecular Mass = (6 x12) + (12 x1) + (6 x16) = 72 + 12 + 96 = 180.
  • Mass of Carbon = 72
  • Mass of Hydrogen =12
  • Ratio of C mass to H mass: 72 / 12 = 6. Therefore, the mass percent of Carbon is exactly six times that of Hydrogen.

24. The proposition ‘equal volumes of different gases contain equal numbers of molecules at the same temperature and pressure’ is known as:

Correct Answer: (a) Avogadro’s hypothesis
Solution:Avogadro's Law states that under the same conditions of temperature and pressure, equal volumes of all gases contain an equal number of molecules (V ∝ n). This was a fundamental step in distinguishing between atoms and molecules.

25. Which one of the following statements about the Ilbert Bill is correct?

Correct Answer: (a) It proposed that the Indian magistrates would try Europeans in criminal cases.
Solution:Introduced during Lord Ripon's viceroyalty, the bill sought to remove racial discrimination in the judicial system by allowing senior Indian magistrates to preside over cases involving British subjects. It faced massive opposition from the European community in India, leading to a compromised version of the bill.

26. Who among the following can attend the meetings of both Houses of Parliament while not being a member of either House?

Correct Answer: (d) The Attorney General of India
Solution:Under Article 88 of the Indian Constitution, the Attorney General has the right to speak and take part in the proceedings of either House (or any joint sitting/committee), but they do not have the right to vote.

27. Who among the following was believed to be a leader of the Sanyasis and Fakirs conspiring against the British in 1857?

Correct Answer: (b) Bahadur Shah II
Solution:

During the 1857 Uprising, Zeenat Mahal (the favorite wife of Bahadur Shah Zafar) was believed to be a key figure in coordinating with various rebel groups, including the wandering Sanyasis and Fakirs who acted as messengers and conspirators against British rule.

28. Who among the following was the founder of the Avadh Kingdom in the 18th century?

Correct Answer: (b) Saadat Khan
Solution:Saadat Khan, also known as Burhan-ul-Mulk, was appointed the Governor of Avadh in 1722. As the Mughal Empire declined, he established Avadh as a virtually independent state, though he remained formally loyal to the Emperor.

29. Who among the following was the founder of the Young Bengal Movement?

Correct Answer: (a) Henry Vivian Derozio
Solution:Henry Vivian Derozio, a teacher at Hindu College, Calcutta, was the leader of this radical intellectual movement in the 1820s and 30s. His followers, known as "Derozians," promoted free-thinking, questioned old customs, and were deeply influenced by the ideals of the French Revolution.

30. Which one of the following statements about the Quit Indian Movement is not correct?

Correct Answer: (c) Muslim League and Hindu Mahasabha actively participated in the movement.
Solution:

This statement is not correct.

  • Muslim League: Stayed away, as they wanted a separate state (Pakistan) before the British left.
  • Hindu Mahasabha: Formally boycotted the movement.
  • Communist Party (d): Did not support it because the USSR had joined the Allies in WWII.
  • Ahmedabad Mills (b): Known as the "Stalingrad of India," these mills stayed shut for over three months in protest.