SOLVED PAPER 2022 (CDS) (II) (General Studies)

Total Questions: 120

41. Which one of the following pairs of enzymes do not work at acidic pH?

Correct Answer: (c) Trypsin and Amylase
Solution:Both Trypsin and amylase do not work in acidic medium.

The enzyme pepsinogen requires acidic medium to get converted into pepsin which further breaksdown the protein molecules. Where as Trypsinogen, Chymotrypsinogen, amylase etc are inactive enzymes secreted by pancreas into the small intestine which requires alkaline medium to get activated into Trypsin, Chymotrypsin etc.

42. Urea is produced by metabolism of

Correct Answer: (d) Both Proteins and Carbohydrates
Solution:Urea is produced by metabolism of both carbohydrates and proteins. During metabolism amino groups, are removed from amino acids and are transform to ammonia which is later converted to urea by the liver. The urea is then passed into kidneys and excreted out in urine.

43. 'Deficiency' of iron causes

Correct Answer: (a) Anaemia
Solution:Deficiency of iron causes Anaemia. The blood contains a red pigment called haemoglobin which is formed by the four molecules of iron. This pigment is necessary for the transport of oxygen in blood. As iron is the structural unit of haemoglobin, deficiency of this will lead to lack of healthy RBCs in body, reduced haemoglobin, thus, resulting in weakness.

44. If an object of mass 10 kg is moving with a uniform speed of 10 m/s, then the linear momentum and the kinetic energy of the object, respectively, are

Correct Answer: (a) 100 N.s and 500 J
Solution:Given, mass of object, m = 10kg
Speed of object, v = 10m / s
Since, linear momentum, p = mv
⇒ p = 10 × 10 = 100Ns
and kinetic energy (KE) = ½ mv²
= ½ × 10 × (10)²
= 500 J

45. An electrical circuit having combinations of resistances and capacitance is given below. The current, flowing through the circuit will be

Correct Answer: (b) 2 A
Solution:

46. The pitch of a sound wave depends upon which one of its following characteristics?

Correct Answer: (d) Frequency
Solution:Pitch of sound wave is the characteristic of sound which is used to differentiate shrill and flat sound. It depends on the frequency of the sound wave. As frequency increases, the shrillness of sound increases.

47. The device used for measuring electric current in a circuit is called

Correct Answer: (a) Ammeter
Solution:The device used for measuring electric current in a circuit is called ammeter. It is connected in series in a electric circuit.

48. A metal wire of length I and diameter d has a resistance R. What would be the resistance of another wire of the same metal and of same length but having double the diameter?

Correct Answer: (b) R/4
Solution:

49. In India, which one of the following is responsible for the implementation of the Government of India's policy in all matters concerning telecommunications?

Correct Answer: (b) Telecom Regulatory Authority of India
Solution:In India, Telecom Regulatory Authority of India is responsible for the implementation of the Government of India's policy in all matters concerning telecommunication.

The main objective of the Telecom Regulatory Authority of India Act, 1997 (TRAI Act), was to establish the Telecom Regulatory Authority of India (TRAI) and Telecom Dispute Settlement Appellate Tribunal (TDSAT). The main purpose of these two institutions established under the TRAI Act is to regulate telecommunication services, adjudicate disputes, dispose appeals and protect the interest of the service providers as well as the consumers.

The Act also aims at promoting and ensuring orderly growth of the. telecom sector.

50. Consider the following statements about James Webb Space Telescope (JWST).

1. It is the largest observatory ever launched into space.
2. It has been developed by NASA in partnership with the European Space Agency and the Canadian Space Agency.

Which of the statements given above is/are correct?

Correct Answer: (c) Both 1 and 2
Solution:Both the given statements are correct about the James Webb Space Telescope (JWST).

It was launched by NASA on 25th December, 2021, from Europe's spaceport in French Guiana. It is named after James Webb, NASA's second administrator from 1961 to 1968 and had led many of NASA's science missions.

The U.S National Aeronautics and Space Agency (NASA) led JWST's design and development and partnered with two main agencies: the European Space Agency (ESA) and the Canadian Space Agency (CSA). James Webb Space Telescope is a space telescope designed primarily to conduct infrared astronomy.