General Ability NDA/NA Solved Paper 2020-I (51-100)

Total Questions: 50

21. The number of maximum electrons in N Shell is

Correct Answer: (d) 32
Solution:

The number of maximum electrons in N Shell is 32. The maximum number of electrons that can fit in any given shell is given by the formula 2n². This means in N shell the number of maximum electrons
can be given by 2 x 4²= 32 electrons.

22. 'Naseem-Al-Bahr' is a bilateral naval exercise between India and

Correct Answer: (d) Oman

23. Vinegar is also known as

Correct Answer: (a) ethanoic acid
Solution:

Vinegar is also known as ethanoic acid. It is a colourless liquid with the chemical formula CH₃COOH. It contains 5% to 20% ethanoic acid by volume and characterised by its pungent smell.

24. A liquid is kept in a glass beaker. Which one of the following statements is correct regarding the pressure exerted by the liquid column at the base of the beaker?

Correct Answer: (a) Thepressure depends on the area ofthe base ofthe beaker
Solution:

The pressure of liquid kept in a glass beaker depends upon the height of liquid column inside the beaker. Pressure at different heights from the surface ofliquid is given by formula, P = Pₐ+ pgh Where, P is total pressure, p= density of liquid, g is acceleration due to gravity and h is height ofthe liquid from the surface.

25. Which of the following statements is NOT correct regarding the travel of sound waves?

Correct Answer: (d) Sound waves can travel through vacuum
Solution:

Sound Wave travels only through a medium. It can travel through solid, liquid, gas but cannot travel through vacuum where there is no medium available for its travel.

26. Deendayal Port is located at

Correct Answer: (b) Gujarat
Solution:

Deendayal Port is located at Gujarat. It is present in Kutch district of Gujarat. It is also known as Kandla port. It is located in the Gulf of Kutch at the western coast of India.

27. Which one of the following cities is associated with Biosafety Protocol to the Convention on Biological Diversity (2000)?

Correct Answer: (c) Cartagena
Solution:

Cartagena is associated with Biosafety Protocol to the Convention on Biological Diversity (2000). The Cartagena Protocol on Biosafety to the Convention on BiologicalDiversity is an international agreement which aims to ensure the safe handling, transport and use of living modified
organisms resulting from modern biotechnology that may
have adverse effects on biological diversity.

28. Krishna Raja Sagara Dam/Reservoir is developed on

Correct Answer: (d) river Kavery
Solution:

Krishna Raja Sagara Dam/Reservoir is developed on river Kavery. M. Visvesvaraya was the chief architect who designed the conceptualised the idea of this dam. The main purpose of this dam for irrigation, regular woter supply and power generation in the drcught prone Mysore
region. The dam was completed in 1938.

29. Which one of the following Indian states does NOT share international border with two or more countries?

Correct Answer: (d) Tripura
Solution:

Tripura does NOT share international border with two or more countries. It only international border with Bangladesh. Arunachal Pradesh shares border with Bhutan, Myanmar and China, Assam shares border with,
Bangladesh and Bhutan, Mizoram shares border with Bangladesh and Myanmar.

30. According to Census of India, 2011, which one among the following is the least populated state in India?

Correct Answer: (d) Punjab
Solution:

According to Census of India, 2011 among the states of Maharashtra, Madhya Pradesh, Odisha and Punjab, the least populated was Punjab. The population of Punjao was 27,743,338 in comparison to 112,374,333 of Maharashtra, 72,626,809 of Madhya Pradesh and 41,974,218 of Odisha.