2019 source guide · Physics

NEET 2019 Physics Semiconductor Electronics Questions

Use this page to connect the official 2019 paper with current Physics practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.

Practice 120 verified questions →Check official NTA archive ↗

What to master

junction diodes, rectification, logic gates and elementary devices.

Original practice preview

These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.

Example 1 · difficulty 1/5

Which feature distinguishes a semiconductor from an insulator in the energy-band picture?

A. A semiconductor has no valence band
B. A semiconductor always has overlapping valence and conduction bands
C. A semiconductor has a relatively small forbidden energy gap
D. A semiconductor has no empty states in any energy band

Example 2 · difficulty 1/5

When a covalent bond breaks thermally in a pure silicon crystal, what is produced?

A. One free electron only
B. One hole only
C. Two holes and no electron
D. One conduction electron and one hole

Example 3 · difficulty 1/5

In an intrinsic semiconductor at thermal equilibrium, which relation between electron concentration n and hole concentration p is correct?

A. n equals p
B. n is greater than p
C. p is greater than n
D. n plus p equals zero

The evidence-first practice loop

1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
2. Attempt closed-bookExpose the concept or execution gap before rereading.
3. Repair and returnClassify the miss and re-practice after a delay.

Canonical chapter practice

Semiconductor Electronics →

Frequently asked questions

Are these official NEET 2019 Physics Semiconductor Electronics PYQs?

No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.

How should I use the NEET 2019 paper?

Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.