Neco Chemistry Past Questions and Answers

Question 166:

• NECO 2009

A neon atom is chemically nonreactive because ____________

A. The electrons at the outermost shell is partially filled
B. The number of protons equals the number of electrons
C. The outer electron shell is completely filled
D. There are equal number of protons and neutrons in its nucleus
E. There are no elections at the outermost shell

Question 167:

• NECO 2009

In the electrolysis of dilute tetraoxosulphate (VI) acid using platinum electrodes, the products obtained at the anode are cathode respectively are ____________

A. Hydrogen, oxygen
B. Hydrogen, tetraoxosulphate (VI) ion
C. Oxygen, hydrogen
D. Sulphur, hydrogen
E. Sulphur, oxygen

Question 168:

• NECO 2009

C\(_6\)H\(_{12}\)O\(_6\)
What is the molar mass of the compound above?
[ H=1, C=12, O=16 }

A. 45
B. 61
C. 180
D. 123
E. 244