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Radha has three children… (Class 10 Science 2026, Q16b)

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ScienceCBSE Class 10 · Board exam 2026, set 31/2/1 · 5 marks · Long answer

CBSE Class 10 Science 2026: question 16(b)

Set in the CBSE Class 10 board exam of 2026, paper 31/2/1, section A, question 16(b), for 5 marks. Try it first; the hints and our step-by-step solution are below.

Q16(b) · 5 marks · Long answerCompetency-basedHow do Organisms Reproduce?

Radha has three children. She does not want to have more children. Radha visits a nearby hospital, to know the methods to prevent pregnancy.

  1. (i)

    Mention the name of any two ways other than the surgical methods, following which Radha can avoid unwanted pregnancies.

    2 marks
  2. (ii)

    Name the surgical methods to prevent pregnancy.

    2 marks
  3. (iii)

    Give one example each of sexually transmitted diseases caused by bacteria and virus.

    1 mark

Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 31/2/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

Group the methods as barrier, hormonal and intrauterine devices.

Hint 2

Surgical methods block a tube in the male or in the female.

Hint 3

Recall NCERT's examples of STDs and which are caused by bacteria or viruses.

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. (i) Any two non-surgical methods: (1) Mechanical barrier such as a condom, or a diaphragm or similar covering worn in the vagina; (2) Oral contraceptive pills, which change the hormonal balance so eggs are not released; (3) Copper-T or loop placed in the uterus.

    2 marks

  2. (ii) Surgical methods: Vasectomy, in which the vas deferens of the male is blocked or cut so sperm cannot pass.

    1 mark

  3. (ii) Tubectomy, in which the fallopian tube of the female is blocked or cut so the egg cannot reach the uterus.

    1 mark

  4. (iii) STD caused by bacteria: gonorrhoea or syphilis.

    ½ mark

  5. (iii) STD caused by virus: warts or HIV-AIDS.

    ½ mark

Answer: (i) Any two: condom/diaphragm, oral pills, Copper-T; (ii) Vasectomy and tubectomy; (iii) Bacterial: gonorrhoea/syphilis; Viral: warts/AIDS

Where the marks are

  • Any two non-surgical contraceptive methods (1 + 1 marks)
  • Vasectomy (vas deferens blocked) (1 mark)
  • Tubectomy (fallopian tube blocked) (1 mark)
  • Bacterial STD example (½ mark)
  • Viral STD example (½ mark)

Revise the chapter

Practise this chapterBoard-style questions from How do Organisms Reproduce?, one at a time, marked against the answer key and marking points.Back to the full paper2026 board paper, set 31/2/1: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.