Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. WAEC
  4. /
  5. Physics
  6. /
  7. 2008
  8. /
  9. Q21
Question 21

The working principle of a pressure cooker is based on the

  • A.increase in the volume of steam inside it
  • B.complete trapping of heat inside it
  • C.increase in the pressure of the pot
  • D.decrease in the pressure of the pot
Objective

Question details

Exam body
WAEC
Subject
Physics
Year
2008
Question no.
#21
Type
Objective
Previous · Q20Water of mass 1.5kg is heated from from 30 o C to 80 o C using an electric… Next · Q22 It takes a shorter time for a liquid to boil at the top of a mountain than at…

More from this paper

  • Q17The design of the thermostat of an electric iron is based on the
  • Q18A metal rod of length 50cm is heated from 40 o C to 80 o C. If the linear…
  • Q19The cubic expansivity of a certain gas at constant pressure is \(\frac{1}{273}…
  • Q23Light is considered as a transverse wave because it travels
  • Q24In the day time, it is possible to see under shady areas such as under a tree…
  • Q25The distance between a concave mirror and an object placed in front of it is…
See all Physics 2008 questions
Teacha

Africa's learning & exam readiness platform. Built for students, tutors, and schools.

Platform

  • Courses
  • Mock Exams
  • Past Questions

For You

  • I'm a Tutor
  • I'm a School
  • Pricing

© 2025 Teacha. Built for African learners, tutors, and schools. Teacha is not affiliated with WAEC, NECO, or JAMB. All past questions are sourced from publicly available materials.

Privacy PolicyTerms of UseCookie Policy