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Chemistry Past Questions For JAMB/WAEC/NECO Students v3

Chemistry Past Questions For JAMB/WAEC/NECO Students v3; These Chemistry questions are for students who are sitting for the following examinations:

HAVE YOU USED OUR JAMB TOOL YET? IT PROVIDES YOUR JAMB COMBINATION FOR FREE

  • JAMB
  • Post-UTME / Post-JAMB
  • WAEC
  • NECO
  • WAEC GCE
  • NECO GCE
  • NABTEB
  • NABTEB GCE
 

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#1. The most important ore of aluminium is

#2. The organic reaction represented by equation CH3 – CH = O + H2NOH gives CH3 – CH – NH + H2O is an example of

#3. The number of electrons presents in H+ is

#4. The hottest part of the gas flame is known as

#5. The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

#6. The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is

#7. The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?

#8. The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3

#9. The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in

#10. The National Chemical Laboratory is situated in

#11. Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be

#12. The mass number of an atom is equal to

#13. The maximum number of covalent formed by nitrogen is

#14. The formula C6H5-CO-CH3 represents

#15. The metal that is usually extracted from sea water is

#16. The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

#17. The inert gases are ____ in water

#18. The molecular formula of phosphorous is

#19. The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of

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Practice other questions here

Practice other Chemistry questions here

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