NCERT Class 12 English Kaliedoscope: Chapter 21 — 71/ONE CENTIMETRE

NCERT CBSE Class 12 English Kaliedoscope Chapter 21 English PDF

This chapter from NCERT Class 12 English Kaleidoscope, titled 'One Centimetre', introduces Bi Shu-min, a renowned Chinese doctor and writer. The narrative focuses on Tao Ying, a factory cook, and her son Xiao Ye. The story highlights Tao Ying's astute nature, particularly her approach to bus fares, and her deep maternal love and sense of responsibility towards her son. It delves into the physical and emotional connection between mother and child, symbolized by the 'one centimetre' difference in height that determines Xiao Ye's bus fare. The chapter explores themes of motherhood, societal expectations, and the quiet strength of ordinary individuals, emphasizing the profound impact a mother has on her child's world, even amidst her own feelings of insignificance.

Quick info

BoardCBSE / NCERT
ClassClass 12
SubjectEnglish
BookKaliedoscope
ChapterChapter 21 — 71/ONE CENTIMETRE
LanguageEnglish
PDF typeNCERT Textbook
SessionCBSE 2026
Reading time4 minutes
Word count693

Learning outcomes

Vocabulary

WordMeaning
astutehaving or showing an ability to accurately assess situations or people and turn this to one's advantage.
casualrelaxed and unconcerned.
carelessnot giving sufficient attention or thought to avoiding harm or errors.
consciousaware of and responding to one's surroundings.
lustrea gentle sheen or soft glow, especially that of a partly reflective surface.
skimpedobtained or provided less of something than is needed, especially money.
hemisphereshalves of a sphere; in this context, referring to the two halves of the skull.
aperturean opening or hole.
overwhelmedgreatly affected or overcome by strong emotions.
insignificancethe quality of being unimportant.
privilegedhaving or enjoying special rights or advantages.
graciouscourteous, kind, and pleasant.

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Practice questions

  1. Why did Tao Ying often not bother to buy a ticket when riding the bus alone? Answer: Tao Ying believed that without her, the bus would still run its route, and the driver and conductor would still be employed, using the same amount of petrol. She saw not buying a ticket as a small saving for herself and a minor punishment for a careless conductor.
  2. What does Xiao Ye say to his mother when her jacket gets caught in the bus doors? Answer: Xiao Ye says, 'Mama, tickets!'
  3. What detail on the bus door does Xiao Ye notice? Answer: Xiao Ye notices the shape of a pale finger painted on the door, pointing at the number '1.10 m', indicating a height requirement.
  4. How does Tao Ying describe her son's hair? Answer: She describes his hair as looking as fluffy as a bundle of straw—dry and without lustre.
  5. What does Tao Ying feel when she touches the aperture on her son's head? Answer: She feels overwhelmed by a sense of responsibility, realizing she brought this delicate creature into the world and must be a perfect mother for him.
  6. Why does Tao Ying tell her son he is still one centimetre away from being tall enough for a ticket? Answer: She tells him this softly, possibly as a gentle way to manage the situation or perhaps because he is indeed just short of the required height. She wants to set a good example for him by being gentle and gracious.

Practice MCQs

Q1. What is Tao Ying's profession?

Q2. What does Tao Ying do if the bus conductor appears casual and careless?

Q3. Why does Xiao Ye remind his mother about tickets?

Q4. What is the height requirement mentioned on the bus door?

Q5. What does Tao Ying realize about her role for her son?

Q6. How does Tao Ying's work affect her nails?

Frequently asked questions

Who is the author of 'One Centimetre'?

The author of 'One Centimetre' is Bi Shu-min, a prominent Chinese doctor and writer.

What is the main theme of the chapter 'One Centimetre'?

The main themes revolve around the profound bond between a mother and her child, maternal responsibility, and the subtle observations of everyday life.

What does the 'one centimetre' detail signify in the story?

The 'one centimetre' refers to the height difference that determines if Xiao Ye needs a bus ticket, highlighting a small but significant detail in their daily lives and Tao Ying's careful management of their resources.

What is Tao Ying's profession?

Tao Ying works as a cook in a factory canteen.

How does the chapter portray Tao Ying's character?

Tao Ying is portrayed as an astute, responsible, and loving mother who is conscious of her role in her son's life, even while feeling her own insignificance in the larger world.

What is mentioned about Xiao Ye's physical appearance?

Xiao Ye's hair is described as fluffy like straw, dry and without lustre, despite his mother ensuring he has a good diet. His skull is noted to have a soft spot where the two halves meet.

Related resources

Important topics

Mother-son relationship and maternal responsibility Tao Ying's character and her astute nature The symbolic significance of 'one centimetre' Childhood consciousness of rituals Author Bi Shu-min's profile

Topics covered

Characterization of Tao Ying Mother-son relationship Maternal responsibility Childhood innocence and rituals Social observation Economic considerations (bus fare) Physical development (child's head) Author's background (Bi Shu-min) Literary style

NCERT Class 12 English — Kaliedoscope — Chapter 21 — 71/ONE CENTIMETRE. Verified by NCERT Help Editorial Team. Reviewed on 29 Jul 2026. Last updated 10 Aug 2026.