NECO GCE Chemistry Runz 2017 | Verified Objectives & Theory Questions & Answers Expo
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| NECO GCE Chemistry Runz 2017 | Verified Objectives & Theory Questions & Answers Expo |
100% VERIFIED CHEMISTRY OBJ ANSWERS
1-10: AAEBBDCAAC
11-20: ABBEBDDBCD
21-30: BABDCECEEC
31-40: CBDEBBBCBB
41-50: AECBBEDBDE
51-60: ACEBDCCEDB
11-20: ABBEBDDBCD
21-30: BABDCECEEC
31-40: CBDEBBBCBB
41-50: AECBBEDBDE
51-60: ACEBDCCEDB
100% VERIFIED CHEMISTRY THEORY ANSWERS
2a)
(i) Temporary hardness – Dissolved calcium hydrogencarbonate
(ii) Permanent hardness -Dissolved calcium sulfate.
(i) Temporary hardness – Dissolved calcium hydrogencarbonate
(ii) Permanent hardness -Dissolved calcium sulfate.
(2bi)
(i) Temporary Hardness can be Removed By Boiling
(ii) Permanent hardness can be removed by use of washing soda (sodium carbonate); ion exchange; the use of polyphosphate water softeners.
(i) Temporary Hardness can be Removed By Boiling
(ii) Permanent hardness can be removed by use of washing soda (sodium carbonate); ion exchange; the use of polyphosphate water softeners.
(2bii)
-Advantages:
(i) Calcium ions in the water are good for children’s teeth and bones.
(ii) The soothe it forms is good for ceramics purposes.
-Advantages:
(i) Calcium ions in the water are good for children’s teeth and bones.
(ii) The soothe it forms is good for ceramics purposes.
-Disadvantages:
(i) It is more difficult to form a lather with soap.
(ii) Scum may form in a reaction with soap, wasting the soap.
(i) It is more difficult to form a lather with soap.
(ii) Scum may form in a reaction with soap, wasting the soap.
(2ci)
A saturated solution is a chemical solution containing the maximum concentration of a solute dissolved in the solvent.
A saturated solution is a chemical solution containing the maximum concentration of a solute dissolved in the solvent.
(2cii)
(2ciii)
(i) Anthracite Coal
(ii) Bituminous coal
(iii) Subbituminous coal
(i) Anthracite Coal
(ii) Bituminous coal
(iii) Subbituminous coal
(2civ)
Coal tar
Coal tar
(2di)
(i) Zinc is not a transition metal because it forms only Zn2 ions with all the 3d electrons present.
(ii) Zn not a transition metal, because it forms only Sc3 ions with n d-electrons
(i) Zinc is not a transition metal because it forms only Zn2 ions with all the 3d electrons present.
(ii) Zn not a transition metal, because it forms only Sc3 ions with n d-electrons
(2dii)
Fine chemicalChemical substances prepared to a very high degree of purity for use in research and industry.
Fine chemicalChemical substances prepared to a very high degree of purity for use in research and industry.
(2diii)
(i) dyes
(ii) perfumes
(i) dyes
(ii) perfumes
===============================
(3ai)
Petroleum Gas and Petrol>Kerosene>Diesel>Asphalt
Petroleum Gas and Petrol>Kerosene>Diesel>Asphalt
(3aii)
I. Asphalt
II. Kerosene
III. Petroleum Gas and petrol
Iv. Asphalt
I. Asphalt
II. Kerosene
III. Petroleum Gas and petrol
Iv. Asphalt
(3bi)
I. Ethene
II. Propene
I. Ethene
II. Propene
(3bii)
(i) Structural Isomerism
(ii) Stereo Isomerism
(i) Structural Isomerism
(ii) Stereo Isomerism
(3biii)
19R – 1s² 2s² 2p6 3s² 3p6 4s¹
10S – 1s² 2s² 2p6
24T – 1s² 2s² 2p6 3s² 3p6 4s² 3d4
19R – 1s² 2s² 2p6 3s² 3p6 4s¹
10S – 1s² 2s² 2p6
24T – 1s² 2s² 2p6 3s² 3p6 4s² 3d4
(3biv)
Group 6
Group 6
(3ci)
I. AgNO3 and BaCl2
II. Bacl2 and Na2SO4
III. Ca(NO3)2 and H2CO3
I. AgNO3 and BaCl2
II. Bacl2 and Na2SO4
III. Ca(NO3)2 and H2CO3
(3cii)
(i) Filtration
(ii) Flocculation
(iii) Disinfection
(i) Filtration
(ii) Flocculation
(iii) Disinfection
(3d)
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1. NECO GCE NOV/DEC ENGLISH LANGUAGE QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
2. NECO GCE NOV/DEC MATHEMATICS QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
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5. NECO GCE NOV/DEC PHYSICS QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
6. NECO GCE NOV/DEC CHEMISTRY QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
7. NECO GCE NOV/DEC CRS QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
8. NECO GCE NOV/DEC IRS QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
9. NECO GCE NOV/DEC IGBO LANGUAGE QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
10. NECO GCE NOV/DEC HAUSA LANGUAGE QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
11. NECO GCE NOV/DEC YORUBA LANGUAGE QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
12. NECO GCE NOV/DEC ECONOMICS QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
13. NECO GCE NOV/DEC COMMERCE QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
14. NECO GCE NOV/DEC AGRICULTURAL SCIENCE QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
15. NECO GCE NOV/DEC FINANCIAL ACCOUNTING QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
16. NECO GCE NOV/DEC COMPUTER STUDIES QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
17. NECO GCE NOV/DEC FRENCH LANGUAGE QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
18. NECO GCE NOV/DEC TECHNICAL DRAWING QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
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20. NECO GCE NOV/DEC CIVIC EDUCATION QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
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24. NECO GCE NOV/DEC CHEMISTRY PRACTICAL QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
25. NECO GCE NOV/DEC BIOLOGY PRACTICAL QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
26. NECO GCE NOV/DEC AGRICULTURAL SCIENCE QUESTIONS & ANSWERS / OBJECTIVES & THEORY EXPO
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ABOUT NECO : The National Examinations Council (also known as NECO) is an examination body in Nigeria that conducts the Senior Secondary Certificate Examination and the General Certificate in Education in June/July and December/January respectively.
NECO was mandated to take over the responsibilities of the National Board of Education Measurement (NBEM). Its maiden examination took place in mid-2000
Nigeria offers six years of basic education, three years of junior secondary education, three years of senior secondary education, and four years of tertiary education. Mathematics and English language are compulsory though Mathematics may not be required for some courses in higher institutions.
The NECO exam body which was founded 18 years ago in 1999, is currently is headed by a Registrar, Charles Uwakwe, appointed by the President . It has six departments, each headed by a director. Each Department has divisions, composed of units. A team of directors and a registrar are the governing body, which is headed by chair Paddy Njoku.
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Nigeria offers six years of basic education, three years of junior secondary education, three years of senior secondary education, and four years of tertiary education. Mathematics and English language are compulsory though Mathematics may not be required for some courses in higher institutions.
The NECO exam body which was founded 18 years ago in 1999, is currently is headed by a Registrar, Charles Uwakwe, appointed by the President . It has six departments, each headed by a director. Each Department has divisions, composed of units. A team of directors and a registrar are the governing body, which is headed by chair Paddy Njoku.
KINDLY COMMENT “ I NEED IT ” IN THE COMMENT BOX BELOW. REAL 2017 NECO GCE QUESTIONS & ANSWERS Direct To … RE: 2017/2018 WAEC GCE
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