Neco Chemistry Past Questions and Answers

Question 116:

• NECO 2008

If two metallic ions of the same concentration migrate to a graphite cathode, the one that would be preferentially discharged is that with the ____________

A. Greater stability in solution
B. Lower electrical charge
C. Smaller mass
D. Stronger tendency to accept electrons
E. Stronger tendency to lose electrons.

Question 117:

• NECO 2008

A device used in the laboratory for intermittent production of gases without heating is ____________

A. Aspirator
B. Delivery tube
C. Fume cupboard
D. Kipp’s apparatus
E. Muller counter

Question 118:

• NECO 2008

What type of bond holds hydrogen fluoride molecules together when forming larger aggregate?

A. Covalent
B. Dative
C. Hydrogen
D. Ionic
E. Metallic

Question 119:

• NECO 2008

The high boiling point of hydrogen fluoride can be explained in terms of ____________

A. Covalent bonds.
B. Dative bonds.
C. Dipole-dipole bonds
D. Electrovalent (ionic) bonds.
E. Hydrogen bonds.

Question 120:

• NECO 2008

The action of zinc on an acid produces ____________

A. Chlorine
B. Hydrogen
C. Nitrogen
D. Sulphur
E. Water vapour.