2019/20 WASSCE/WAEC CHEMISTRY ESSAY EXPO,,,,RUNS,,,,HELP,,REAL,,,SURE,,,,AND CONFIRM QUESTIONS AND ANSWERS BY COOLBOY FOR ALL COUNTRIES SUCH AS GHANA,,,,,, GAMBIA,,,,, SIERRA LEONES,,,,, LIBERAL,,,,, GAMBIA,,,,, NIGERIA

*2019 WAEC CHEMISTRY OBJECTIVE*

 

FOR NIGERIA AND GAMBIA 

1-10   BCCADADACA

11-20 DDCACCDCBA

21-30 DCAABDBBAA

31-40 BACBDCDBCB

41-50 BDCCCCBDDD

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Chemistry obj answers

SIERRA LEONE AND GHANA

1-10 DABCADACBD

11-20 BABCACDADD

 

21-30 ABCCDABCDD

31-40 DBBDBBADAC

41-50 DABDABCABA

3ai)
The Solvay Process is a continuous
process using limestone (CaCO 3 ) to produce carbon dioxide (CO 2 ) which reacts with ammonia (NH3 ) dissolved in brine (concentrated NaCl(aq)) to produce sodium carbonate.



No5

(i)It is currently being used in many industries, from chemical and refining to metallurgical, glass and electronics.

ii......