General Knowledge (Part – B : English) Antonyms (NDA/NA SOLVED PAPER 2022-II) (101 to 150)

Total Questions: 50

41. Consider the following statements:

1. Maharashtra State has the maximum share of national highways (length in kilometres).
2. The nature of terrain and the level of economic development is one of the reasons for the maximum share of national highways in Maharashtra.
Which of the statements given above is/are correct?

Correct Answer: (c) Both 1 and 2
Solution:Among the Indian States Maharashtra has the largest network of National Highways (NH). There are many factors like economic development, terrain plays an important role in contributing to the density of number of National Highways in any region and it is also responsible for the maximum share of NHs in Maharshtra.

42. The activities or services focussed on creation, rearrangement and inter-pretation of new and existing ideas are referred to as

Correct Answer: (b) quinary activities
Solution:Quinary activities are the activities or services that focus on the creation, re-arrangement and interpretation of new and existing ideas. It also include data interpretation and the use and evaluation of new technologies.

43. Consider the following statements about OJde Desh ka Aam Nagrik (UDAN)' scheme :

1. It is an innovative scheme to develop the regional aviation market.
2. It creates affordability yet economically viable and profitable flight on regional routes.
Which of the statements given above is/are correct?

Correct Answer: (c) Both 1 and 2
Solution:UDAN (Ude Desh ka Aam Nagrik) is the flagship Regional Connectivity Scheme of the Ministry of Civil Aviation. It is an innovative scheme to develop the regional aviation market and a market-based mechanism in which airlines bid for seat subsidies. This first-of-its-kind scheme globally will create affordable yet economically viable and profitable flights on regional routes so that flying becomes affordable to the common man even in small towns.

44. Consider the following statements:

1. The Sharavati river creates Jog Falls.
2. The Brahmani river is formed by the confluence of the Kosi and Sankh rivers.
3. The Tamraparni is a river of Tirunelveli district of Tamil Nadu.
How many of the above statements is/are correct?

Correct Answer: (b) 2
Solution:The Brahmani is a major seasonal river in Odisha. The river is formed by the confluence of the Sankh and South Koel rivers.

45. SONAR is a device that is used to measure the distance of underwater objects by a ship. Which of the following types of waves does it use for this purpose?

Correct Answer: (c) Ultrasonic waves
Solution:(c)

46. Which one of the following statements about the speed of sound waves is not correct?

Correct Answer: (b) The speed of sound waves in air decreases with increase in temperature.
Solution:The speed of sound is directly proportional to the temperature. Therefore, as the temperature increases, the speed of sound increases. The speed of the sound also depends on the density of the medium through which it travels. In general, sound travels faster in liquids (like water) than in gases (like air) and quicker in solids (like steel) than in liquids.

47. The part of the human ear that converts the pressure variations associated with audible sound waves to electrical signals is

Correct Answer: (b) cochlea
Solution:The structures of the cochlea vibrate in response to sound with a particular vibratory pattern and this vibratory pattern allows the inner hair cells and their connections to the auditory nerve to send signals to the brainstem and brain about the sound's vibration and its frequency content.

48. Which one of the following metals is most commonly used for making filament of incandescent electric bulbs?

Correct Answer: (d) Tungsten
Solution:Incandescent bulbs typically use a tungsten filament because of tungsten's high melting point. A tungsten filament inside a light bulb can reach temperatures as high as 4,500 degrees.

49. A bullet of mass 10 g is horizontally fired with velocity 300ms⁻¹ from a pistol of mass 1 kg. What is the recoil velocity of the pistol?

Correct Answer: (c) - 3 m s⁻¹
Solution:When a bullet is fired by the gun and gun moves in backword direction with a particular speed known as recoil velocity of the gun.
Let m and M be the masses of bullet and gun, respectively. If v and V are the velocities of the bullet and gun, respectively after the firing then:-
0 = mv+ MV
Therefore V = -(mv/M)
Putting the values, V =- (0.01kg X 300m/s) / (1Kg)
The recoil velocity of gun - 3 m/s
The negative sign indicates that the gun moves in a direction to that of the bullet.

50. A microphone converts

Correct Answer: (b) sound waves to electrical signals
Solution:Amicrophone converts sound into electrical current. The device is an acoustic-to-electric transducer. Sound is first converted to mechanical motion by means of a diaphragm, the motion of which is then converted to an electrical signal.