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Class X — Science

Chemical reactions, acids & bases, metals, carbon compounds, heredity, light, and electricity

Sample Practice Questions

  1. The process by which plants make food using sunlight is:

    • Respiration
    • Photosynthesis
    • Transpiration
    • Fermentation
    Show answer

    Answer: Photosynthesis

  2. The SI unit of electric power is:

    • Joule
    • Volt
    • Watt
    • Ohm
    Show answer

    Answer: Watt

  3. The pH of lemon juice is approximately:

    • 7
    • 10
    • 2–3
    • 12
    Show answer

    Answer: 2–3

  4. Mendel's law of segregation states:

    • Traits blend in offspring
    • Alleles separate during gamete formation
    • All traits are linked
    • Dominant allele masks recessive allele
    Show answer

    Answer: Alleles separate during gamete formation

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Practice Questions

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Chemical reactions, acids & bases, metals, carbon compounds, heredity, light, and electricity.

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