ICSE Class 10 Semiconductor Electronics: Materials, Devices and Simple Circuits — Mock Test (2027)
Free online mock test for Semiconductor Electronics: Materials, Devices and Simple Circuits (ICSE Class 10 Physics) — 73 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.
What to expect: This mock test covers key concepts from the Semiconductor Electronics: Materials, Devices and Simple Circuits chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.
Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.
Sample questions
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1.For a p-type semiconductor, which of the following statements is true?
- A.Electrons are majority carriers and trivalent atoms are the dopants
- B.Electrons are minority carriers and pentavalent atoms are the dopants
- C.Holes are minority carriers and pentavalent atoms are the dopants
- D.Holes are majority carriers and trivalent atoms are the dopants
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2.From a silicon diode V-I graph, at I = 20 mA the voltage is 0.8 V and at I = 10 mA it is 0.7 V. The forward dynamic resistance is:
- A.10 ohm
- B.1 ohm
- C.100 ohm
- D.0.1 ohm
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3.A Zener diode of breakdown (Zener) voltage 6 V is used as a voltage regulator. The unregulated input is 10 V and a series resistor of 200 ohm limits the current. If the load draws 10 mA, the current through the Zener diode is:
- A.10 mA
- B.20 mA
- C.30 mA
- D.50 mA
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4.Assertion (A): A p-n junction cannot be made simply by physically pressing a p-type slab against an n-type slab. Reason (R): Surface roughness is much larger than the inter-atomic spacing, so continuous contact at the atomic level is not possible.
- A.Both A and R are true and R is the correct explanation of A
- B.Both A and R are true but R is NOT the correct explanation of A
- C.A is true but R is false
- D.A is false but R is true
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5.In an n-type silicon, which of the following statements is true?
- A.Electrons are majority carriers and trivalent atoms are the dopants
- B.Electrons are minority carriers and pentavalent atoms are the dopants
- C.Holes are minority carriers and pentavalent atoms are the dopants
- D.Holes are majority carriers and trivalent atoms are the dopants
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