(Antonyms) Part – A : English (NDA/NA SOLVED PAPER 2024 – I) (51 to 100)

Total Questions: 50

31. In the human digestive system, which one among the following is the role of the pancreas?

Correct Answer: (c) Secretion of lipase, amylase and protease
Solution:Pancreas will secrete pancreatic juice that contains lipase, amylase and protease.

32. Consider the following statements:

1. DNA replication takes place when chromatin is opened up.
2. Chromatin organises itself into rod-shaped chromosomes before cell division.
3. Both prokaryotes and eukaryotes have the same process for cell division.
Which of the statements given above is/are correct?

Correct Answer: (b) 1 and 2 only
Solution:Prokaryotes and eukaryotes follow different process for cell division as prokaryotes follow fission and eukaryotes follow mitosis and meiosis.

33. A uniform meter scale of mass 0.24 kg is made of steel. It is kept on two wedges, W₁ and W₂ in a horizontal position. W₁ is at a distance of 0.2 m from one of its ends, while W₂ is at distance of 0.4 m from the other end. If the force on the scale is N₁ due to W₁ and N₂ due to W₂ then: (take g = 10 ms⁻²)

Correct Answer: (c) N₁ = 0.6N and N₂ = 1.8N
Solution:(c)

34. Escape from is close to 11.2km s⁻¹ On another planet whose radius is half of the Earth's radius and whose mass density is four times that of the Earth, the escape speed in km s⁻¹ will be close to:

Correct Answer: (a) 11.2
Solution:

35. Which one of the following does not apply to sound waves in fluids ?

Correct Answer: (c) They are transverse
Solution:Sound wave in any fluid medium is longitudinal wave.

36. A ball of 0.1 kg mass is dropped on a hard floor from a height of 0.45 m and rises to a height of 0.20 m. If it was in touch with the floor for 0.1 s, the net force it applied on the floor while bouncing is (take the gravitational acceleration g = 10 ms⁻²)

Correct Answer: (d) 5.0 N
Solution:

37. Which one of the following statements regarding simple pendulum is correct?

Simple pendulum has a time period independent of amplitude:

Correct Answer: (d) only for small amplitudes because then the net force on its bob is proportional to its displacement.
Solution:

38. Which one of the following about different frictional forces is correct?

Correct Answer: (c) Static friction > Kinetic friction > Rolling friction
Solution:

39. A metallic bob X of mass m is released from position A. It collides elastically with another identical bob Y placed at rest at position B on a horizontal frictionless table. The angle AOB is 30°.

How high does the bob X rise immediately after the collision?

Correct Answer: (d) It stops at position B
Solution:

40. Consider the two statements given below:

Statement-1: Infrared waves are also called heat waves.
Statement-2: Water molecules readily absorb infrared waves,
Select the correct answer using the code given below:

Correct Answer: (a) Both the statements are individually true and Statement-2 is the correct explanation of Statement-1.
Solution:When infrared radiation is absorbed by water molecules, it causes them to vibrate faster, which increases their kinetic energy and hence their temperature. This is why infrared waves are also called heat waves.