NEET Daily Practice Questions 21 December 2024: DPP for 2025 aspirants

NEET Daily Practice Questions 21 December 2024

NEET Daily Practice Questions 21 December 2024: Aspirants preparing for the NEET 2025 shall refer to the below-mentioned NEET Daily Practice Questions 21 December 2024. These questions cover important topics from subjects like physics, chemistry, and biology. They can analyze their strengths and weaknesses in a particular subject by working through these questions and reviewing the answers. It can help them to perform better in the upcoming NEET 2025 exam.

Also Read | JEE Main DPP 21 December 2024: Daily practice problems for 2025 aspirants

NEET Daily Practice Questions 21 December 2024: Physics

Here are some of the NEET daily practice questions with answers 21 December 2024:

Question 1: The terminal velocity of a copper ball of radius 5 mm falling through a tank of oil at room temperature is 10 cm s-1. If the viscosity of oil at room temperature is 0.9 kg m-1 s-1, the viscous drag force is:

1. 8.48 × 10-3 N

2. 8.48 × 10-5 N

3. 4.23 × 10-3 N

4. 4.23 × 10-6 N

Answer: (1)

Question 2: After passing through a polariser a linearly polarised light of intensity I is the incident on an analyser making an angle of 30° with that of the polariser. The intensity of light emitted from the analyser will be:

1. I/2

2. I/3

3. 3I/4

4. 2I/3

Answer: (3)

Question 3: If the screen is moved away from the plane of the slits in a Young's double slit experiment, then the:

1. angular separation of the fringes increases

2. angular separation of the fringes decreases

3. linear separation of the fringes increases

4. linear separation of the fringes decreases

Answer: (3)

Question 4: The reciprocal of resistance is:

2. mobility

3. conductivity

4. conductance

Answer: (4)

Question 5: The distance covered by a body of mass 5 g having linear momentum 0.3 kg m/s in 5 s is:

1. 300 m

2. 30 m

3. 3 m

4. 0.3 m

Answer: (1)

NEET Daily Practice Questions 21 December 2024: Chemistry

Here are some of the NEET daily practice questions with answers 21 December 2024:

Question 1: The density of the solution is 2.15 g mL–1, then mass of 2.5 mL solution in correct significant figures is

1. 5375 × 10–3 g

2. 5.4 g

3. 5.38 g

4. 53.75 g

Answer: (3)

Question 2: The half-life of a first-order reaction is 2000 years. If the concentration after 8000 years is 0.02 M, then the initial concentration was :

1. 0.16 M

2. 0.32 M

3. 0.08 M

4. 0.04 M

Answer: (2)

Question 3: Fluorine is a stronger oxidising agent than chlorine because :

(a)  F–F bond has a low enthalpy of dissociation.

(b)  Fluoride ion (F-) has high hydration enthalpy.

(c) Electron gain enthalpy of fluorine is less negative than chlorine.

(d) Fluorine has a very small size.

Choose the most appropriate answer from the options given :

1. (a) and (b) only

2. (a) and (c) only

3. (a) and (d) only

4. (b) and (c) only

Answer: (4)

Question 4: The incorrect statement about denaturation of proteins is

1.  It results due to change of temperature and/or pH.

2.  It results in loss of biological activity of proteins.

3.  A protein is formed from amino acids linked by peptide bonds.

4. Uncoiling of the helical structure takes place.

Answer: (3)

Question 5: Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Chlorine is an electron withdrawing group but it is ortho, para directing in electrophilic aromatic substitution.

Reason (R): Inductive effect of chlorine destabilises the intermediate carbocation formed during the electrophilic substitution, however due to the more pronounced resonance effect, the halogen stabilises the carbocation at ortho and para positions.

In the light of the above statements, choose the most appropriate answer from the options given below :

1. Both (A) and (R) are correct and (R) is the correct explanation of (A).

2. Both (A) and (R) are correct but (R) is not the correct explanation of (A).

3. (A) is correct but (R) is not correct.

4. (A) is not correct but (R) is correct.

Answer: (3)

NEET Daily Practice Questions 21 December 2024: Biology

Here are some of the NEET daily practice questions with answers 21 December 2024:

Question 1: The correct order of steps in Polymerase Chain Reaction Casparian strips occur in (PCR) is

1.  Extension, Denaturation, Annealing

2.  Annealing, Extension, Denaturation

3.  Denaturation, Extension, Annealing

4. Denaturation, Annealing, Extension

Answer: (4)

Question 2: Secondary xylem and phloem in dicot stem are produced by

1.  Apical meristems

2.  Vascular cambium

3.  Phellogen

4.  Axillary meristems

Answer: (2)

Question 3: Pneumatophores occur in

1.  Halophytes

2.  Free-floating hydrophytes

3.  Carnivorous plants

4.  Submerged hydrophytes

Answer: (1)

Question 4: Sweet potato is a modified

1.  Stem

2.  Adventitious root

3.  Tap root

4.  Rhizome

Answer: (2)

Question 5: Plants having little or no secondary growth are

1.  Grasses

2.  Deciduous angiosperms

3.  Conifers

4.  Cycads

Answer: (1)