+234 810-8515-604 (call/sms only)examplaza@gmail.com
+234 814-7515-098+234 813 827-4394
Notice Our 2020 WAEC Runs & NECO Expo Subscription for answers supply ends soon.

CHOOSE WHAT YOU NEED FROM US?



GURUSWAPAZ WAEC EXPO


2020/2021 WAEC/NECO Answers: 2020 WAEC CHEMISTRY PRACTICAL ANSWERS


2020/2021 WAEC/NECO Answers: 2020 WAEC CHEMISTRY PRACTICAL ANSWERS

Visual Art 2 (Essay) 2:00 p.m. 4:00 p.m.


Visual Art 1 (Objective) 4:00 p.m. 4:50 p.m.


Visual art obj

1-10 CCCBDDCCCC
11-20 ACDBAAACAA
21-30 ABCDADCDBA
31-40 ACABACDAAA
 Completed

🇳🇬🇳🇬

This is actually the 2019 WAEC CHEMISTRY PRACTICAL ANSWERSAnswers as questions sent to our subscribers on WHATSAPP, if you are looking for 2020 WAEC/NECO Answers midnight before the exam, try contacting us.

Pls Use Your School End Point

VERY IMPORTANT MESSAGE:
Please make sure you use your school end point in that number 1. In my answer, you will see that i used 12.50cm3. Make sure you use what your school used. So try edit my 12.50cm3 and put yours, then recalculate. Meaning that you should replace my 12.50cm3 with your school's end point anywhere you see it on my work. Some school got 12.90cm3, 13.00cm3, some even got 18.50cm3, etc

MORE EXPLANATION:
You should use ur school average titre value in number 1a bcos each school have their general titre value for their students which should differ a little with their fellow classmates due to errors encountered during titration in the lab. So when you see 12.50cm3, you should check the range ur school got during the titration in the lab, ur chemistry teacher must have taught how to input ur values and he/she must have given you an average titre value. So, use it to edit our solution. Some school got 13.00cm3, 12.90cm3, 15.50cm3, etc. You should edit and recalculate the Number 1bii by editing our 12.50 there with ur school value. But if ur school, got ranges like 12.30cm3-12.70cm3, then u can use my 12.50cm3. Its difference is always +- 0.2... Just take note. This is applicable in number 1a and 1bii.
Thanks

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

(1a)
DRAW A TABLE WITH THE FOLLOWING

Burette reading|ROUGH|1st |2nd |3rd 
Final |13.60|15.50|14.80|12.50
Initial |1.00 |3.10 |2.40 |0.00
Vol. acid used |12.60|12.60|12.40|12.50

Volume of S2O3²- =12.60+12.40+12.50/3
=37.50/3
=12.50cm³

(1bi) 
Conc. in g/dm³ = molar mass * conc in mol/dm³
But molar mass of Na2S2O3
=(23*2)+(32*2)+(16*3)
=46 + 64 + 48
=158g/mol
Therefore, 15.8g/dm³ = 158g/mol * conc of A in mol/dm³

Conc of A in mol/dm³ = 15.8/158
=0.1mol/dm³

(1bii) 
Using CaVa/CbVb = na/nb
0.1*12.50/Cb * 25.00 = 2/1

50Cb = 1.25
Cb = 1.25/50
Cb = 0.025mol/dm³

The conc of I2 in B = 0.025mol/dm³

(1biii) 
Gram conc of I2 = molar mass * molar conc 
= (127*2)*0.025
=6.35g/dm³

Percentage mass of I2 in sample = 6.35/9.0 *100%
= 0.7056 * 100%
=70.56%

(1c) 
There have to be a change in the colour of the mixture before it is added. The end point is known when the blue colour formed as starch is added, changes to colourless


name
name


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


NOTE: DRAW TABLE HERE, TEST comes first, OBSERVATION follows, then INFERENCE, just like in the paperwork below

(2)
PLS DRAW A TABLE FOR THESE:
TEST|OBSERVATION | INFERENCE

(2a) 
TEST: Salt C+10cm^3 of distilled water and shake with filter
INFERENCE: Salt C dissolves partly in water to give colourless filerate and residue
OBSERVATION: Salt C contains both soluble and insoluble salts

(2bi) 
TEST: 2cm^3 of filterate of salt C +AgNO3(aq) then dil HNO3
INFERENCE: Formation of white ppt then the white ppt remains
OBSERVATION: Cl- or CO3^2- present

(2bii)
TEST: Solution from 2bi + NH3(aq) in excess
INFERENCE: The white ppt formed in 2bi dissolves in NH3(aq)
OBSERVATION: Cl- confirmed

(2ci)
TEST: Residue of C + 2cm^3 of dil HCl then shake
INFERENCE: Effervescence occurs with the liberation of a gas that is odourless and colourless but turns lime water milky and turns moist blue litmus paper to red
OBSERVATION: Acidic gas is evolved ie CO2 is evolved from CO3^2- or HCO3-

(2cii)
TEST: Mixture from 2ci +NH3(aq) in drops then in excess
INFERENCE: Blue gelatinous ppt is formed in drops which turns deep blue colouration in excess
OBSERVATION: Cu^2+present, Cu^2+ confirmed

name

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



(3ai)
On adding BaCl2 solutions to a portion of saturated Na2CO3 precipitate is formed, precipitate dissolves on adding excess dilute HCl

(3aii)
Q is reducing agent like SO2, H2S, CO

(3bi)
calcium oxide(CaO)

(3bii)
concentrated H2SO4

(3c)
NaOH pellet is deliquescent because it absorbs moisture from the atmosphere to form solution





How do I get 2020 WAEC CHEMISTRY PRACTICAL ANSWERSBEFORE THE EXAM?
. You can get 2020/2020 Exam answers directly from examplaza.com, visit HERE NOW

Frequently Asked Qestions and Answers

3 things to do while waiting for your WAEC result [ARTICLE] - Pulse ...

What should we do after Waec?

Here are three important things you should do while waiting for the result.Attend coaching classes. It is very easy for secondary school leavers to slip after writing their final papers. You might want to rest after writing your SSCE for a whole month. ... Prepare for UTME. Student preparing for exams. ... Learn a skill.Nov 2, 2018

NECO Registration Form 2020/2021 and Latest Exams Updates ...

How much is Neco Nigeria?

To register for NECO examination, candidates are to obtain a draft and pay a non-refundable fee of Twelve Thousand Naira Only (N12,000) paid via bank draft or to school management if internal registration. The payment can be done in any NECO office, banks and Nipost offices nationwide.
To register for NECO examination, candidates are to obtain a draft and pay a non-refundable fee of Twelve Thousand Naira Only (N12,000) paid via bank draft or to school management if internal registration. The payment can be done in any NECO office, banks and Nipost offices nationwide.Mar 26, 2020

What university in the UK accepts WAEC? - Quora

What is the equivalent of Waec in UK?

Nearly all Universities in the UK require GCE A level or equivalent for admission into undergraduate degrees. In addition to A levels, you should also have GCSEs which I believe are O level equivalents (also WAEC in West Africa).
Nearly all Universities in the UK require GCE A level or equivalent for admission into undergraduate degrees. In addition to A levels, you should also have GCSEs which I believe are O level equivalents (also WAEC in West Africa).

WAEC Grading System for Examinations. | Download Table

What grade is distinction in Waec?

... is externally organized and graded by the West Africa Examinations Council (WAEC), which clas- sifies candidates who obtain BECE Aggregate 6 to 12 as "distinction" or "good" students, Aggregate 13 to 24 achiev- ers as "average," and Aggregate 25 and above achievers as "weak" students (Asihene, 2009;Dorleku, 2013; ...
... is externally organized and graded by the West Africa Examinations Council (WAEC), which clas- sifies candidates who obtain BECE Aggregate 6 to 12 as "distinction" or "good" students, Aggregate 13 to 24 achiev- ers as "average," and Aggregate 25 and above achievers as "weak" students (Asihene, 2009;Dorleku, 2013; ...

WAEC result is not valid for 10 years ? waec registrar | News From ...

Does Waec result expire?

WAEC result is not valid for 10 years ? waec registrar. ... the registrar clearly stated that Waec result is valid for life. Waec result does not expire in as much as the owner is still alive, the result can be used .
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

The Realities of Cheating in Online Classes & Exams

Can you cheat on online exams?

The researchers found that while 32.1% of respondents admitted to cheating in a face-to-face class, 32.7% admitted to cheating in an online course. ... Another study took another tack in establishing how common cheating in online exams is, as compared to face to face exams.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Which Is More Easier To Pass Between WAEC, NECO, & NABTEB ...

Is Neco harder than Waec?

NECO seems less difficult compared to WAEC but not also easy to make A's.
NECO seems less difficult compared to WAEC but not also easy to make A's.Mar 15, 2018

Meaning of NECO 'No CA3' & How to Fix it - MySchoolGist

What is the meaning of no ca3 in Neco?

NECO 'No CA 3' Meaning and How to Resolve. What is CA3: Continuous Assessment for students of 3. What does it mean by No CA 3: It means your school did not uploaded their Students continuous assessment 3 on our database and by such the result of such candidate will not be released.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Universities Accepting WAEC, NECO, NABTEB and GCE, How to ...

Can I use Waec GCE to gain admission?

You can use WAEC GCE, NECO GCE, NABTEB GCE to gain admission into UNILAG. And any possible combination is acceptable by the university.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Never too old for new tricks: the joy of being a mature student ...

Is 40 too old for university?

Age is not a barrier when it comes to learning. About 40% of mature students studying at university are over the age of 30, some in their 50s and 60s. ... Ucas says that universities are happy to accept older students as most arrive with high levels of enthusiasm, commitment and additional life experience.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

70 Courses You Can Study Without Mathematics | Fatherprada

Can I gain admission with d7 in maths?

a pass (D7 and E8) in Mathematics is accepted. The Oke-Ogun Polytechnic requires credit passes in English Language, Economics, Government and a pass (D7 and E8) in Mathematics.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Is 22 too late to start college when I graduated from high school at ...

Is 22 too old for college?

You are never to old to start college. In fact, at 22 you will be in great company. Non-traditional students are typically more focused on their school work and tend to do better on assessments, when compared to their 18-21-year old classmates.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

what's the equivalent of gcse's here to american education? - British ...

What is a GCSE equivalent to in America?

GCSE (General Certificate of Secondary Education) ? formerly known as O-levels. A single-subject exam taken upon completion of two years of study at the age of 16 (age at US 10th grade). Students take anywhere between 5-10 subjects, which, if passed, are generally considered equivalent to a US high school diploma.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

9 Creative and Inventive Ways for Students to Cheat in Exams

How can I cheat in exams?

Follow these incredible guidelines to cheat:Don't bring out secret notes right after the beginning of your exams;Avoid using an eraser because it's impractical and obvious;Write down answers on the turn side of your paper;Add tiny notes to clothes, such as sweater sleeves or baseball hats;More items...

South African matric [Archive] - PPRuNe Forums

What is matric equivalent in UK?

It's hard to compare precisely. Matric covers a broad range of subjects like GCSEs do in the UK, which we write at 16. Matric is written at 18 and probably to a slightly higher standard than GCSE level but definitely below the A-Level exams we do at 18, when normally we only do 3-4 subjects.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Breaking: WAEC GCE To Hold Twice A Year Starting From? (See ...

How many times is GCE done in a year?

West African Examinations Council (WAEC) has announced that the General Certificate Examination (GCE) for private candidates will now be held twice a year starting in 2017.
West African Examinations Council (WAEC) has announced that the General Certificate Examination (GCE) for private candidates will now be held twice a year starting in 2017.Dec 15, 2016

WAEC Timetable for May/June Examinations 2020 - MySchoolGist

What is the date for Waec 2020?

According to the timetable, the West African Senior School Certificate Examination (WASSCE) for school candidates, 2020, will commence on 6th April, 2020 and will end on 5th June, 2020.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Age limit as dilemma for admission seekers | The Guardian Nigeria ...

What is the age limit for Waec?

Although the 16 years age limit requirement for university admission has no legal backing, it has become the gold standard for some universities in Nigeria, which had in their post-Unified Tertiary Matriculation Examination (UTME) advertorial stated that ?candidates, who will not be 16 years of age by October 31, 2021, ...
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

How to Buy Waec Result Checker Using Mtn Mobile Money - Websaet

How can I buy WAEC scratch card with mobile money?

NECO 2020 Registration Form, Exam Starting Date, Price Timetable ...

How much is NECO 2020?

NECO registration form 2020 price is Eleven Thousand , Three Hundred And Fifty Naira Only (N11,350) Nine Thousand, Eight Hundred And Fifty Naira Only (N9,850) following the reduction of JAMB UTME form price and NECO form price in 2021.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Mature students: the route to a bachelor's degree for over 25s

Is 25 too old for university?

Studying is a great way to start a new career. Perhaps you think you're 'too old' to start university, but it's never too late to study. An increasing number of students aged over 25 are opting for university courses because they're unsatisfied with their job or want a new career path.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Can I Gain Admission With NECO Result? See answer here ...

Can I gain admission with NECO result?

Yes. You can gain admission into any institution in Nigeria with your NECO result. This is because, NECO is a national examination body, which is is responsible for conducting examination for students who are aspiring to further their education to tertiary level in Nigeria. ... They all accept NECO results in Nigeria.
Yes. You can gain admission into any institution in Nigeria with your NECO result. This is because, NECO is a national examination body, which is is responsible for conducting examination for students who are aspiring to further their education to tertiary level in Nigeria. ... They all accept NECO results in Nigeria.Jul 14, 2019

We released SSCE results in 43 days ? NECO ? Punch Newspapers

How long does it take NECO result to be out?

We released SSCE results in 43 days ? NECO. The National Examinations Council has said it released the last Senior Secondary Certificate Examination results in 43 days.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

List of Universities in Germany that Accept WAEC Results | GH ...

Is Wassce accepted in Germany?

The West African Examination Certificate Examination (WASSCE) is an examination that is administered by the West African Examination Council (WAEC). The examination is administered yearly. ... Most universities in Germany accepts WAEC results from West African students.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Universities Accepting WAEC, NECO, NABTEB and GCE, How to ...

Can I use NECO GCE to enter university?

You can use WAEC GCE, NECO GCE, NABTEB GCE to gain admission into UNILAG. And any possible combination is acceptable by the university.
You can use WAEC GCE, NECO GCE, NABTEB GCE to gain admission into UNILAG. And any possible combination is acceptable by the university.Feb 5, 2020

How to Pass Junior Waec (BECE) 2020 Without Expo ? Flashlearners

How can I pass Junior Waec?

2020 WAEC GCE Registration Form | Instructions & Guidelines

How much is Waec this year?

How to Apply for the 2020 WAEC GCE. Candidates arc expected to pay a registration fee of Thirteen Thousand, Nine Hundred and Fifty Naira (N13,950) only, at branches of any of the following banks or any accredited agent and obtain the Registration PIN and Information VCD: Access Bank Plc.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

WAEC Timetable 2020/2021 Out: Check & Download PDF WAEC ...

Is Waec 2020 time table out?

Is WAEC 2020 Timetable Out? Yes, WAEC official timetable for 2020/2021 exam is out. WAEC EXAM will commence on 30th March, 2020 and will end on 12th June, 2020. At every stage of human endeavor, there is always a need for promotion which is often preceded by an examination.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Let's consider admitting D7 and E8 students in University - Prof ...

Can you go to university with d7?

Prof Yankah said that although there are only a few state-owned universities in Ghana, they control about 80 percent of student enrollment. ... Prof Emmanuel Adow-Obeng, who suggested that WASSCE students with grade D7 and E8 in the core subjects be allowed to enter the universities through an access course programme.
waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

WAEC Grading System for Examinations. | Download Table

What is a distinction in Waec?

... is externally organized and graded by the West Africa Examinations Council (WAEC), which clas- sifies candidates who obtain BECE Aggregate 6 to 12 as "distinction" or "good" students, Aggregate 13 to 24 achiev- ers as "average," and Aggregate 25 and above achievers as "weak" students (Asihene, 2009;Dorleku, 2013; ...
... is externally organized and graded by the West Africa Examinations Council (WAEC), which clas- sifies candidates who obtain BECE Aggregate 6 to 12 as "distinction" or "good" students, Aggregate 13 to 24 achiev- ers as "average," and Aggregate 25 and above achievers as "weak" students (Asihene, 2009;Dorleku, 2013; ...
Nsikan said: my name is Nsikan, I got addmission in Abubakar Tafawa Balewa University (ATBU) I scored 268 last year thanks to examplaza... view all reviews