NABTEB GCE 2017 Chemistry Obj and Essay Answer — Nov/Dec Expo

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

Chemistry OBJ:
1-10=bdcacccbdc
11-20=bcccbadaac
21-30=ccdbadacbc
31-40=cddcaaccbd
41-50=dbcadbacba

GOODLUCK
1ai)
In a degenerated orbital there are no two electrons that can have the same four Quantum numbers.
1aii)
i)An ionic bond involves the loose and gain of electrons.
ii)A covalent bond involves the sharing of electrons by two atoms where both atoms contribute.
iii)A dative bond involves sharing of electrons but only one atom contribute the electrons to be shared

1bi)
Periodic law states that atoms are arranged in order Of increase in their atomic number
1bii)
i)Does not form common compounds - k10
ii)liberates hydrogen from cold water - J3
iii)Are halogens - N17
iv)Are in the same group - J31L13
v)Forms ions by loss of three electrons - L13

1c)
- Water
- Ammonia - Triangular pyramid
- Methane - Tetrahedral
- sulphur (iv) oxide - linear

---

2ai)
LAW OF CONSTANT COMPOSITION: states that all pure sample of a particular chemical compound contain the same elements combined in the same proportion by mass.
2aii)
-sample C: 5.00/4.06x100/1
= 500/4.06
= 123.15

-sample D: 6.60/5.35x100/1
= 660/5.35
= 123.36

approximately
sample c: 123g
sample d: 123g
hence, the percentatge by mass is the same, this proved the law of definite(constant) proportion.

2bi)
AMPHOTERIC OXIDE: are oxides of metals which can behave both as basic oxides and as acidic oxides i.e they can react with both acids and alkalics to form salts and water only.
2bii)
i)ZNo: formed from 2ZN(s)+O2 --> 2Zno
hence; Zno(s)+H2So4(aq) --> ZnSO4(aq)+H2O(i)
ii)Al2O3: formed from 4Al(s)+3O2(g) --> 2Al2O3(s)
iii)Pbo: formed from 2pb(s)+O2(g) --> Pbo(s)
Therefore: amphoteric acide from Zno above shows that, amphoteric oxides behave as basis forming a salt and water only.
2biii)
i)Acidic oxides e.g CO2, SO4, NO2, e.t.c
ii)basic oxides e.g Na2O, CaO

2c)
i)IDEAL GAS:
A hypothetical gas that obeys exactly all postulates of the kinetic-molecular theory.
2cii)
i)change in temperature
ii)variation in earth gravitation

2c)
iii)gas forms a liquid - condensation
iv)liquid forms a gas - evaporation
v)gas forms a solid - sublimation

---

3ai)
Allotropes are atoms of the same element in the same physical state but in different forms.
3aii)
--TABULAR FORM--

Diamond:
*Transparent.
*Very strong solid
*Octahedral shape

Graphite:
*Blank
*Soft solid
*Hexagonal shape
3aii)
Diamond -> For cutting glass
For drilling limestones

Graphite -> For making pencils
For lubricating metals

3bi)
An electrolytic cell is made up of an electrolyte, electrodes and sources of electricity where the electrolyte decomposes.

3bii)
2 Faraday deposits 63.5g of copper
i.e 2x96500c deposits 63.5g of copper
298,500c deposits Xg of copper
X = 298,500x63.5 / 2x96500
=98.211g

3ci)
A reducing agent is the substance that is oxides in a redox reaction
3cii)
They will turn purple permanent to pink.
3ciii)
i)Pipeline product manufacturing company in portharcourt
ii)Dangote cement in lokoja

---

4ai)
A saturated solution contains the maximum amount of solute that the solvent can take at a particular temperature.
4aii)
A dilute solution contains more solution that solute contain at a temperature.
4aiii)
A super saturated solution contains more than enough solute than the solvent can contain at the temperature.

4b)
Iodine -
Chlorine - For killing micro organisms
Alum - For coagulation

4ci)
i)It reacts with water to form acid
ii)It changes blue litmus paper to red
iii)It reacts with ammonia gas to form salt.
4cii)
i)As an oxidising agent because it reduced to nitrogen gas.
ii)As an acidic oxide because the product formed are salt and water only.

4di)
Disco sulphate(iii) acid - Hso2
4dii)
C2HSOH ------->CH3COOH+H20
4diii)
C2HSOH -------> C2H4+H20
COMPLETED

=========================

042tvseries.com send all exam expo answer earlier than others

============================

GOODLUCK!!!

NABTEB 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 NABTEB GCE Ssce Expo Answers Here, Free wassce Chemistry objective, essay & theory correct Expo 2017 answers Runz NABTEB GCE Chemistry, NABTEB GCE Ssce 2017 Free Chemistry essay, obj and theory Questions and Answers Expo for NABTEB 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 NABTEB GCE ssce expo Chemistry obj and theory, essay questions for free, loadedexpo correct wassce Chemistry ans, sure NABTEB GCE ssce Chemistry objective answers runz runs expo free real and correct NABTEB GCE ssce 2017 nov/dec Chemistry free expo runz runs ans answers online for free see free answers online, 2017 Verified NABTEB GCE Free Ssce Chemistry Obj and theory Answers have been posted REAL NABTEB GCE SSCE Chemistry QUESTIONS & ANSWERS Direct To Phone Number AS Text message, RE: 2017 WASSCE Chemistry (Expo) NABTEB GCE 2017 certified runs Chemistry questions and answers NABTEB GCE SSCE November/December 2017 Chemistry THEORY / ESSAY / OBJ QUESTION AND EXPO I need NABTEB GCE ssce free expo site, how can I get NABTEB GCE Chemistry answer for free, NABTEB GCE 2017 Chemistry essay, Objective And Theory Question and Answer Now Posted, Real 2017/2018 nov/dec wassce NABTEB GCE Chemistry objective, essay and theory 100% correct expo questions and answers runz chokes runs, verified 2017 NABTEB GCE Chemistry theory, essay and obj NABTEB GCE Chemistry expo website, NABTEB GCE ssce Chemistry live cheats, sure November/December NABTEB GCE SSCE 2017 Chemistry original objective, theory and essay questions and answer now available here, 100% NABTEB GCE ssce Chemistry expo, 2017 wassce Chemistry obj, essay and theory runz now posted, correct NABTEB GCE ssce Chemistry objective, essay (theory) answer now ready, free 2017 wassce Chemistry obj, theory and essay best expo site NABTEB GCE ssce Chemistry questions and answers, password for certified NABTEB 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 NABTEB GCE ssce Chemistry questions and answer, i need NABTEB GCE Ssce nov/dec Chemistry essay theory objective obj Expo 2017 answers on whatsapp, gidifans Chemistry answer, solutionclass Chemistry answer, 042tvseries Chemistry answer, codedexam NABTEB GCE Chemistry answer, wapbaze Chemistry answer, wapextra Chemistry expo, Martinlibrary Chemistry expo, examgists NABTEB GCE Chemistry expo, NABTEB GCE Chemistry objectives answer, naija NABTEB GCE Chemistry expo free answer

We appreciate you for reading On baze360, but we think it will be better you like our facebook fanpage and also follow us on twitter below.
Follow @Yloadedofficial

Are you an artiste? Do you want your music to go viral and reach a large number of audience? Promote your music on baze360 by clicking here. You can also advertise your product or brand by clicking here.