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Central Board of Secondary Education · English · Class 10 · Science

Board exam · Science · 2026

15 questions · One at a time

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9
MCQ2 marks

A student plots a graph for the oscillatory behavior of species concentrations in a chemical reaction similar to the BZ reaction as shown below. In a standard electric circuit, such periodic oscillations in voltage are typically produced by what type of source?\n\n

Rendering diagram…

  • A.Direct Current (DC) Source
  • B.Alternating Current (AC) SourceCorrect
  • C.A standard Battery
  • D.A simple Resistor
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