2018 NECO LIVE ANSWERS HOT
3Hrs before time. Subscribe here
SUBSCRIBE HERE NOW!!! (45% off)


Neco Gce 2017 Chemistry Obj And Essay Solution Answer – Nov/Dec Expo

NECO GCE Chemistry Obj And Essay/Theory Solution Questions and Answer – NOV/DEC 2017 Expo Runz.


Chem-Obj
1aaebbdcaac
11abbebddbcd
21babdceceec
31cbdebbbcbb
41aecbbedbde
51acebdccedb


No.3d added



4a)
(i) Coke
(ii) Graphite
(iii) Diamond
(iv) Coal
(v) Charcoal
(4b)
Le chatelier’s principle states that for a reversible reaction in equilibrium, if any of the factors(temperature, concentration, pressure) keeping the system in equilibrium is altered, the system will shift to adjust the change
(4bii)
I – It will shift from left to right
II – It will shift from left to right
III – It will favor the forward reaction by increasing the product
(4biii)
Kc = [NH]2
——
[N2][H2]3



3ai)
petroleum gas and petrol->kerosene->diesel->asphalt
3aii)
I-asphalt
II-kerosene
III-petroleum gas and petrol
IV-asphalt
3bi)
i)ethene
ii)propene
3bii)
i)structural isomerism
ii)steveo isomerism
3biii)
19R-1s^2 2s^2 2P^6 3S^2 3P^6 4S^1
10S-1S^2 2S^2 2P^6
24T-1S^2 2S^2 2P^6 3S^2 3P^6 4S^2 3D^4
3biv)
group 6
3ci)
I- AgNO3(aq) and BaCl2
II-BaCl2 and Na2SO4
III-Ca(NO3)2 and H2CO3(aq)
3cii)
i)fitteration
ii)flocculation
iii)disinfection

3d)
Mass of NaCl
= mass of Nacl + mass of H2O
= (23 + 35.5) + 80g
= 58.5 + 80g = 138.5g
Hence
Since 39.8g at 100°C = 35.9g at 15°C
138.5g at 100°C = Xg at 15°C
X = 138.5 × 35.9/39.8g
= 124.9g at 15°C
Hence mass of Nacl precipitated
= 138.5 – 124.9g
= 13.6g of Nacl



5a)
i) increasing the surface area
By adding catalyst to the reaction
ii)0.896dm^3 of CO2 was produced by 4g of caco3
iii)
If 100g of caco3-----1mole of co2(22.4dm3)
4g------X
X=4*22.4/100
X=0.896dm3

5bi)
i)atom the smallest particle of a chemical element that can exist.
ii)molecule is a group of atoms bonded
together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.



2a)
i)Temporary hardness is caused by dissolved calcium hydrogencarbonate 
ii)Permanent hardness is caused by dissolved calcium sulfate.

2bi) 
i)Temporary Hardness can be Removed By Boiling
ii)Permanent hardness can be removed by ... 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)Some brewers prefer using hard water for making beer.
2biii) 
Disadvantages
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.
2ciii) 
- Anthracite Coal
- Bituminous coal
- Sub-bituminous coal
2civ) 
The anthracite coal: They are the purest forms of coal

2d) 
- Zinc is not a transition metal because it forms only Zn2+ ions with all the 3d electrons present.
- Zn not a transition metal, because it forms only Sc3+ ions with n d-electrons
2dii) 
Fine Chemicals: This is a chemical compound made in relatively small amounts and in a comparatively pure state.
=========================
042tvseries.com send all exam expo answer earlier than others
============================
GOODLUCK!!!
NECO GCE ssce 2017 Chemistry expo answers, Ssce 2017 Chemistry objective and essay Expo answers now available, nov/dec Chemistry theory Answers for 2017, Chemistry obj and theory Questions NECO GCE Ssce Expo Answers Here, Free wassce Chemistry objective, essay & theory correct Expo 2017 answers Runz NECO GCE Chemistry, NECO GCE Ssce 2017 Free Chemistry essay, obj and theory Questions and Answers Expo for NECO GCE Chemistry, Wassce 2017 Free Chemistry Paper 1 and Paper 2 objective and essay Questions and Answers Expo Now Posted, Free Chemistry objective ans for internal ssce, see NECO GCE ssce expo Chemistry obj and theory, essay questions for free, loadedexpo correct wassce Chemistry ans, sure NECO GCE ssce Chemistry objective answers runz runs expo free real and correct NECO GCE ssce 2017 nov/dec Chemistry free expo runz runs ans answers online for free see free answers online, 2017 Verified NECO GCE Free Ssce Chemistry Obj and theory Answers have been posted REAL NECO GCE SSCE Chemistry QUESTIONS & ANSWERS Direct To Phone Number AS Text message, RE: 2017 WASSCE Chemistry (Expo) NECO GCE 2017 certified runs Chemistry questions and answers NECO GCE SSCE November/December 2017 Chemistry THEORY / ESSAY / OBJ QUESTION AND EXPO I need NECO GCE ssce free expo site, how can I get NECO GCE Chemistry answer for free, NECO GCE 2017 Chemistry essay, Objective And Theory Question and Answer Now Posted, Real 2017/2018 nov/dec wassce NECO GCE Chemistry objective, essay and theory 100% correct expo questions and answers runz chokes runs, verified 2017 NECO GCE Chemistry theory, essay and obj NECO GCE Chemistry expo website, NECO GCE ssce Chemistry live cheats, sure November/December NECO GCE SSCE 2017 Chemistry original objective, theory and essay questions and answer now available here, 100% NECO GCE ssce Chemistry expo, 2017 wassce Chemistry obj, essay and theory runz now posted, correct NECO GCE ssce Chemistry objective, essay (theory) answer now ready, free 2017 wassce Chemistry obj, theory and essay best expo site NECO GCE ssce Chemistry questions and answers, password for certified NECO GCE ssce Chemistry essay theory obj expo, how to get/ where to get wassce Chemistry theory, essay and objective expo answer direct to my phone as text message, trusted NECO GCE ssce Chemistry questions and answer, i need NECO GCE Ssce nov/dec Chemistry essay theory objective obj Expo 2017 answers on whatsapp, gidifans Chemistry answer, solutionclass Chemistry answer, 042tvseries Chemistry answer, codedexam NECO GCE Chemistry answer, wapbaze Chemistry answer, wapextra Chemistry expo, Martinlibrary Chemistry expo, examgists NECO GCE Chemistry expo, NECO GCE Chemistry objectives answer, naija NECO GCE Chemistry expo free answer

Follow us on Twitter!

Like us on Facebook!

No comments:

After dropping your comment, keep calm, it may take minutes before it appears after moderation.
Your comment(s) are appreciated.

You want to get notified when i reply your comment? Kindly tick the Notify Me box.

Powered by Blogger.