Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. UNICAL
  4. /
  5. Chemistry
  6. /
  7. 2019/2020
  8. /
  9. Q7
Question 7

25cm3 of a mixture of noble gases was obtained from air after the removal of other constituents. What was the original volume of air?

  • A.2500cm3
  • B.1250cm3
  • C.125cm3
  • D.80cm3
Objective

Question details

Exam body
UNICAL
Subject
Chemistry
Year
2019/2020
Question no.
#7
Type
Objective
Previous · Q6Commercial bleaching can be carried out using Next · Q8 In any chemical reaction, the total mass of the products is always equal to that…

More from this paper

  • Q2If an element has the electronic configuration $$1s^2 2s^2 2p^6 3s^2 3p^4$$, it…
  • Q3An oxide XO 2 has a vapour density of 32. What is the atomic mass of X?
  • Q4Aluminium is a good roofing material because it
  • Q5An atom can turn into an ion if it
  • Q9P (g) + G (g) 3R (s) + S (g) , ∆H is negative. Which of the following will…
  • Q10Which of the followthg ions is acidic?
See all Chemistry 2019/2020 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