Post UTME Past Questions Agent
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now

Chemistry Past Questions

Clear Selections
Change Subject Post a Question Check Syllabus Study My Bookmarks Past Questions Videos Watch Video Lessons Download App

WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent
2861

What change will occur during the electrolysis of brine using carbon electrodes?

  • A. Chlorine will be given off at the anode
  • B. Oxygen gas will be given off at the anode
  • C. Sodium will be deposited at the cathode
  • D. The resulting solution, after electrolysis, will be acidic.
  • E. The volumes of hydrogen and chlorine given off during the same time are equal
View Answer & Discuss (7) NECO 2003
2862
Which metal bromide is widely used in photography?
  • A. calcium bromide
  • B. magnesium bromide
  • C. potassium bromide
  • D. silver bromide
  • E. sodium bromide
View Answer & Discuss (3) NECO 2003
2863
How many Faradays of electricity are required to liberate 9g of aluminium? [Al = 27]
  • A. 0.1
  • B. 0.3
  • C. 1
  • D. 2.7
  • E. 3
View Answer & Discuss (1) NECO 2003
Post UTME Past Questions Agent
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
2864

At s.t.p, a mole of chlorine occupies 22.4dm3. If the temperature is changed to 35°C and the pressure to 750mHg the of the new volume will be [Cl = 35.5]

  • A. \(\frac{760\times 22.4\times 308}{750\times 273\times 35.5} dm^3 \)
  • B. \(\frac{760\times 22.4\times 308}{750\times 273}dm^3 \)
  • C. \(\frac{750\times 22.4\times 35.5}{760\times 273}dm^3\)
  • D. \(\frac{760\times 22.4\times 35.5}{750\times 22.3\times 273}dm^3 \)
  • E. \(\frac{760\times 22.4\times 35.5}{750\times 308}dm^3 \)
View Answer & Discuss (7) NECO 2003
2865

What is the concentration (mol dm\(^{-3}\)) of a solution containing 28 g of potassium hydroxide per 100 cm\(^3\) of solution? (K=39; H=1; O=16)

  • A. 0.01
  • B. 0.05
  • C. 1.0
  • D. 5.0
  • E. 2.8
View Answer & Discuss (12) NECO 2003
Start a Free Practice Test
 
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent