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NEET MDS Quiz - Practice Test

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Practice Test

State PSC PYQ - 3 Questions

1
State PSC PYQ

What is the primary process involved in bone remodeling during craniofacial development?

  1. Intramembranous ossification
  2. Appositional growth of bone
  3. Endochondral ossification
  4. Osteoclastic resorption and osteoblastic deposition

πŸ“ Explanation:

Bone remodeling is a continuous, lifelong process that involves the removal (resorption) of old or damaged bone by osteoclasts and the formation (deposition) of new bone material by osteoblasts. This coupled activity is essential for maintaining the structural integrity of the skeleton and adapting to mechanical stress (Wolff's Law). While intramembranous and endochondral ossification are the two main processes of initial bone formation during development, the ongoing changes and reshaping of the bone structure after its initial formation, including during craniofacial development, occur through this dynamic balance of resorption and deposition. 

2
State PSC PYQ
According to the Inverse Square Law, if the distance from the X-ray source is doubled, the intensity:
1) Doubles
2) Remains the same
3) Decreases by half
4) Decreases to one-fourth

πŸ“ Explanation:

According to the inverse square law, intensity ? 1/(distance²). Doubling the distance decreases the intensity to 1/4 of the original value.

3
State PSC PYQ
Which of the following is NOT a disadvantage of ceramic materials for dental restorations?
1) High brittleness under tensile stress
2) High thermal conductivity
3) Difficulty in bonding to tooth structure
4) Low aesthetic quality compared to composites

πŸ“ Explanation:

Ceramics offer superior aesthetics; therefore ‘‘low aesthetic quality’’ is not a disadvantage.

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