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D'EXPLOITATION MINIERE GEOLOGIE DE L'EXPLOITATION MINIERE (EGEM) DE LUNIVERSITE DE NGOUNDERE
ANNEE ACADEMIQUE 2014
Epreuve de Chimie
CHIMIE(20pt,)
Dans le cadre du développement durable, l'aluminium est le métal abondant et recyclable. Il s'obtient à partir
de la bauxite, composé d'oxyde d'aluminium Al203 hydraté (40 à 60 %), mélangé à de la silice et�à de l'oxyde de
fer, Fe203 donnant cette couleur rouge caractéristiqiie.
L'alun!lnium a·pour numéro éltomique Z == 13. ,
1) Que signifie Z (0,5 pt). Quelle est la configurntion électroniqve de l'aluminium àans l'état
fondamental ? (0,5 pt)
2) .Quel est l'ion le plus probable ? (O,S pt) Justifier (0,5 pt).
3) · On plonge un morceau de feuille d'aluminiu:n préalablement chauffé,,dans un qa[lon.contenant du
dlchlore, Clz, Le métal s'enflamme et il .se forme des fumées blanches dé chlorure d'aluminium, AICl3•
a) Ecrire la réaction (1 pt)
·b) Quelle propriété de l'aluminium met-on en évidence (0,5 pt). C::imment évolue-t-elle dans une
ligne de ciassification périodique 7 (1 pt)
4) Donner la str.ucture de Lewis dè AICl3 (1 ptj
Le précipité d'hydroxyde.... acheter le livre
Number of Pages: 36
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Number of Pages: 62
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Mathematics - ENS BAMBILI | COMPETITIVE ENTRANCE EXAMINATION INTO THE FIRST YEAR OF THE FIRST CYCLE OF ENS BAMBILI
NUMBER OF PAGES: 80
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ICT - ENSET Bambili | COMPETITIVE ENTRANCE EXAMINATION INTO THE FIRST YEAR OF THE SECOND CYCLE OF ENSET BAMBILI
DURATION: 1½ Hours
NUMBER OF PAGES: 41
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EXAMINATION INTO THE FIRST YEAR OF THE NATIONAL ADVANCED SCHOOL OF ENGINEERING (POLYTECH) YAOUNDE
NUMBER OF PAGES: 426
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COMPETITIVE ENTRANCE EXAMINATION INTO THE FIRST YEAR OF THE FIRST CYCLE OF ENS BAMBILI
DEPARTMENT: CHEMISTRY
INSTRUCTION:Answer all the question in section 1 (Major) and all the questions in section 2 (minor). Select the most appropriate answer (letter A, B, C, or D) for each item and write it against the correct number space provided in your Answer Booklet. Make sure you insert this question sheet inside your answer booklet before you leave the hall
NUMBER OF PAGES: 66
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COMPETITIVE ENTRANCE EXAMINATION INTO THE FIRST YEAR OF THE SECOND CYCLE OF ENSET BAMBILI
INSTRUCTIONS
In your answer booklet, write only the answer chosen against the question number. Each question carries one mark.
Accountancy: One and a half hours
Business Mathematics One and a half hours
NUMBER OF PAGES: 65
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BIOLOGY - ENS BAMBILI |COMPETITIVE ENTRANCE EXAMINATION INTO THE FIRST YEAR OF THE FIRST CYCLE
DURATION: 4 HOURS
DURATION: 4 HOURS
INSTRUCTIONS: Answer all questions! Select the correct answer to each of the questions in Section One, Two and Three, and write the corresponding letter (A, B, C or D) in the Answer Booklet provided. Section Four comprises two structured essay.
Make sure that you insert the question paper inside the Answer Booklet before you lea s the examination hall!
SECTION ONE: BIOLOGY (40%)
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Number of Pages: 57
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Details:
Featuring:
Number of Pages: 165
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Food Technology - Home Economics, ENSET Bambili First Year, Second Cycle Examination Questions and Answers in both Major and Minor Papers.
INSTRUCTIONS
- In your booklet, write only the letter of the answer chosen against the question number.
- This question paper must be submitted together with answer booklet ;
- Each question carries 1 mark ;
NUMBER OF PAGES: 63
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National Polytechnic Yaounde Mathematics Examination Questions
Password: NPY_Bk01dwmeetlearn.com
History | ENS FIRST BAMBILI FIRST CYCLE COMPETITIVE ENTRANCE QUESTIONS AND ANSWERS
NUMBER OF PAGES: 73
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FASHION CLOTHING & TEXTILE - ENSET Bambili First Year, First Cycle Examination Questions and Answers in both Major and Minor Papers.
INSTRUCTIONS
- In your booklet, write only the letter of the answer chosen against the question number.
- This question paper must be submitted together with answer booklet ;
- Each question carries 1 mark ;
NUMBER OF PAGES: 45
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Physics - ENS BAMBILI | COMPETITIVE ENTRANCE EXAMINATION INTO THE FIRST YEAR OF THE SECOND CYCLE OF ENS BAMBILI
NUMBER OF PAGES: 60
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