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CBSE Class 10 · Science · 16 past questions

  1. Q1 2026
    The genotype of green stemmed tomato plant is denoted by 'GG' and that of purple stemmed tomato plant as…
  2. Q2 Sample paper 2026-27
    The male gamete of an apple plant has seventeen chromosomes. What is the number of chromosomes in the female…
  3. Q3 Sample paper 2026-27
    In order to study patterns of inheritance, Neha had performed typical Mendelian experiments with pea plants…
  4. Q4 2025
    For Questions number 17 to 20, two statements are given — one labelled as Assertion (A) and the other…
  5. Q5 2025
    The lowest part of the ear called earlobe, is closely attached to the side of the head in some of us (Figure… (with a figure)
  6. Q6 2025
    A pure pea plant having round (R), yellow (Y) seeds is crossed with another pure pea plant having wrinkled…
  7. Q7 2025
    If pea plants with round and green seeds (RRyy) are crossed with pea plants having wrinkled and yellow seeds…
  8. Q8 2025
    Assertion (A) : A human child bears all the basic features of human beings.…
  9. Q9 2024
    A cross made between two pea plants produces 50% tall and 50% short pea plants. The gene combination of the…
  10. Q10 2024
    In an experiment to study independent inheritance of two separate traits : shape and colour of seeds, the…
  11. Q11 2024
    A cross between two tall pea plants resulted in offsprings having a few dwarf plants. The gene-combination of…
  12. Q12 2023
    The statement that correctly describes the characteristic(s) of a gene is…
  13. Q13 2023
    A cross between pea plant with white flowers (vv) and pea plant with violet flowers (VV) resulted in F$_2$…
  14. Q14 2023
    When an ‘X’ bearing sperm fertilises the egg, the resulting zygote has the following combination of…
  15. Q15 2022
  16. Q16 2022
    Mendel blended his knowledge of Science and mathematics to keep the count of the individuals exhibiting a…