Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. NDA
  4. /
  5. Chemistry
  6. /
  7. 2019/2020
  8. /
  9. Q32
Question 32

The air pollutant unknown in nature is

  • A.DDT
  • B.CO
  • C.HCHO
  • D.NO
Objective

Question details

Exam body
NDA
Subject
Chemistry
Year
2019/2020
Question no.
#32
Type
Objective
Previous · Q31Which of the following ions is acidic? Next · Q33 The chromatographic separation of ink is based on the ability of the component…

More from this paper

  • Q28Platinum electrodes are dipped into copper sulphate solution in a voltameter…
  • Q29What volume of water is produced when a mixture of 150cm^3 of hydrogen and 100cm…
  • Q30Given the half-cell reaction, 2Br ⟶ Br2, how many moles of electron will…
  • Q34A liquid that will dissolve fat is
  • Q3525cm³ if a gas x combines z molecules at 15°C and 75mmHg. How many…
  • Q36What quantity of electrons (in mole) is lost when one more of iron (II) ions…
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