Wednesday 3rd July
CRS-OBJ!This is actually the 2019 neco chemistary answers Answers as questions sent to our subscribers on WHATSAPP, if you are looking for 2020 WAEC/NECO Answers midnight before the exam, try contacting us.
Ammonium chloride ---> sublimation
Ink ---> chromatography
Iron filling ---> magnetic separation
-Example Of physical Change
(i)change of matter
(ii)evaporation of sodium chloride
-Example of chemical change
(i)burning of firewood
(ii)rusting of iron
(i)they are good reducing agent
(ii)they form basic oxide
(iii)they formed electro valent bonding
Aluminum tetraoxosulphate(vi) is prepared by the action of hot concentrated tetraoxosulphate(vi)acid on aluminum oxide
Al2O3(s) + 3H2SO4(aq)---->Al2(SO4)3(aq)+3H2O(i)
Aluminum tetraoxosulphate(vi) is moderately soluble in water
(i)it is denser than air
(ii)it is very poisonous
It turn black due to the formation of black lead (II) sulphide
Water gas contains flammable gases whereas the producer gas contains both flammable and non-flammable gases
(I) Diamond ---> Octahedral in shape
(II) Graphite ---> Hexagonal in shape
(i) For manufacturing of ammonia and fertilizer
(ii) It is used as a refrigerant and also used to shrink metal parts
(iii) It is used in grinding substances that are too tough to grind at normal temperature
Avogadro's law states that equal volumes of all gases under the same temperature and pressure contain the same number of molecules
Given : 2SO2(aq) + O2(g) --> 2SO3(aq)
Volume of oxygen, O2 required = 1/2*7.50dm³
No of moles required = 3.75/22.4moles
No of oxygen molecules required = 0.1674Ã—6.02Ã—10^23
(I) NaCl -----> Valency of chlorine is 1
(II) NaO2 -----> Valency of oxygen is 2
(III) Na3N ------> Valency of Nitrogen is 3
(i)Formation of black soap
(ii)Formation of glycerol
(iii)It helps in the precipitation of large biomolecules such as protein
Because they react with water to form acids
- Reaction with sulphur
S(s) + O2(g) ---> SO2(g)
- Reaction with metals
4Na(s) + O2(g) ----> 2NaO(s)
Ion is any atom or group of atoms which possess an electric charge
ION : H^+, F^-, N^3+
NUMBER OF PROTONS: 1,9,13
NUMBER OF NEUTRONS : 0, 10, 14
NUMBER OF ELECTRONS : 0, 10, 10
Monosaccharide are simple six carbon sugar having the formula C6H12O6 eg glucose and it's isomers are fructose and galactose, both obtainable from fruits and honey
Chemical industry are companies that produce industrial chemicals
- Favourable climatic conditions
- It's nearness to the source of raw materials
- The availability of space to store raw materials
(i) It is aldose and it contains alkanal (-CHO) group
(ii) Brick red precipitate is formed
(iii) Reducing sugar possess a free aldehyde (-CHO) or ketone (-C=O) group while non reducing sugar a free aldehyde or ketone group is lacking
(i) Pollution is the release of unwanted materials into the environment which cause adverse change
(ii) Pollutant is a substance or energy introduced into the environment that has undesired effects or adversely effects the usefulness of a resource
n=0.05mole of CaC2
CaC2+2H2O ---> Can(OH)2+C2H2
0.05mole of CaC2 ----> 0.05mole of C2H2 because the mole ratio are equal
VC2H2=n*Vm = 0.05*22.4
(i)Na2CO3 ----> soluble
(ii)K2CO3 ----> soluble
(iii)ZnCO3 ----> insoluble
(iv)(NH4)2CO3 ----> soluble
Sublimation is the process whereby a solid changes state directly to the gaseous state without passing through the liquid state upon heating
Iodine and Ammonium chloride
(i) He may have conducted the experiment in a partial vacuum
(ii) Addition of impurities like salt
(iii) T°K = 78 +273 = 351K
(i)presence of moisture
(ii)presence of oxygen
4Al(NO3)3(s) ------> 2Al2O3(s) +3O2(q) + 12NO2(q)
(i)sols and gels
Using CAVA/CBVB =nA/nB
0.122*20.50/CB * 25.00 = 2/1
CB = 0.05002moles/dm^3
Gram conc = molar conc * molar mass
Molar mass of hydrated salt = 6.203 * 1/0.05002
106 + (18x)= 124
18x = 124 - 106
18x = 18
x = 18/18 = 1
SaH was NaCO3. H2O
(i)the metal is potassium
(ii) period 4
(iv) 2k(s) + 2H2O ----> 2KOH(aq) + H2(q)
Standard electrode potential is the potential difference between an element and a solution of its ions under standard condition
I. Oxidation takes place at hydrogen electrode
H2(q) -----> 2H^+(aq) + 2e^-
II. Reduction takes place at copper electrode
CU²+(aq) + 2e ------> CU(s)
CU(s) + 2H^+
(i) It can not be separated by physical means
(ii) The composition is fixed
(iv) Can be represented by a chemical formula
-MIXTURE of Fe and s-
(i) It can be separated by physical means
(ii) The composition of a mixture can vary
(iii) Homogeneous or Heterogeneous
(iv) Can not be represented by a chemical formula
6P , 13Q and 15R
(I) Q is metal
(II) R is a non-metal
(IIII)Q and R belong to the same period .
P2 = 410*300/130=946.2
P2 = 946.2mmHg
2CuO(s) + C(s) ----> 2CuO(s) + CO2(g)
H2O(g) + C(s) ----> CO(g) + H2(g)
(I) 20L and 17B
(II) Calcium chloride
(III) Electrovalent combination
(IV) It is used in desiccators as drying agent for all gases except
20?21 isn't much older than that. I'll go a step further and say that it's never too old to go to college. There's no cutoff date for an education. Sometimes life gets in the way of things and some people aren't able to attend college right away.
Yes, you can use NECO (be it NECO June/July or Nov/Dec) to gain admission into any university of your choice. Generally, all higher institutions accept NECO just like WAEC, GCE and NABTEB. You can as well combine your NECO with another NECO or any other exams type to gain admission.
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.
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.
Under the new WAEC grading system, A1 is Excellent, B2 Very Good, B3 Good, C4, C5 and C6 are interpreted as Credit, D7 and D8 are interpreted as Pass, while F9 is Fail.
See Answer. Can i Use my NABTEB Result to study at any University or Institution Abroad? ... The Results offered after participating in NABTEB Examination is called NABTEB RESULT and it can be used to gain admission into Universities, Polytechnics or Colleges of Education.
The SSCE is conducted by two different examination boards: the West African Examination Council (WAEC) and the National Examination Council (NECO). Students have the choice of either writing the two exams WAEC and NECO or just one of them.
Similar to WAEC, your National Examination Council (NECO) result (certificate) is valid for life. It doesn't have any expiry date. That is, for as long as you live, you can use your NECO result to gain admission into the university and seek employment where applicable.
WASSCE Nov/Dec, also known as General Certificate Examination (GCE) or WAEC GCE, is a private examination and uniforms are not required but biometric registration is compulsory as in the former.
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.
The WAEC examination is open to both private and school candidates. ... Most universities in Germany accepts WAEC results from West African students. So, you need to meet their minimum requirements before you're offered admission into a German university.
The answer is yes. NECO can be used to study abroad but not all schools abroad accept it. ... First of all, an applicant with a NECO result must sit for a proficiency English language exam such as GRE, IELTS, SAT, ACT, PSAT, TOEFL, GMAT, and the likes.
WAEC is the exams body in charge of senior secondary school exams called West African Examination Council. They conduct both WAEC May/June SSCE for school candidates and WAEC Feb./March or August/September for private candidates - also called WAEC GCE. ... Secondary school can be: Senior secondary school i.e SSS 1 to 3.
Reasons Why NECO Result is Accepted for Study in Canada. You sure read that correctly, NECO result is accepted for study in Canada if you did't know. And if you already know this, you definitely would have been surprised when you read the caption since NECO is a Nigerian examination.
National Examinations Council, otherwise known as NECO, is a national examination body established by the Nigerian government to conduct examinations. Unlike WAEC, NECO is a national examination body vested with the responsibility to oversee specified exams only in Nigeria.
WASSCE 2020 time table is now out and can be accessed by all students writing the May/June 2020 examination meant for students in schools only. The Exams officially commences on Monday, 30th March 2020 per the time table sighted by news Ghana. Last day of the exams would be Friday 12th June 2020.
Under the new WAEC grading system, A1 is Excellent, B2 Very Good, B3 Good, C4, C5 and C6 are interpreted as Credit, D7 and D8 are interpreted as Pass, while F9 is Fail. A1 and B2 in the WASSCE means Excellent, B3 is B (Very Good), C4 is C (Good), C5 and C6 are D (Credit), D7 and E8 are E (Pass) and F9 is F (Fail).
B2 = Secure grade B. B3 = Low grade B. C1 = High grade C. C2 = Secure grade C. C3 = Low grade C.
Minimum age of admissions. The minimum age to study a degree programme at the university is normally at least 17 years old by the 20 September in the year the course begins. There is no upper age limit. The University will continue to review the minimum age requirement in light of recent changes to national legislation ...
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.
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.
21 isn't too old to start anything. Seriously though, who is going to be able to tell you are two years older. It's a none issue. It's probably a better time to start uni than an 18 year old in my opinion.
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.
List of Universities that accepts O'level Pass (D7) in English and courses you can use D7 in English Language to study. Most universities requires at least a O'level credit pass (C6) in English language to gain admission in their school both some accepts O'level D7 (Pass) in English.
A1 and B2 in the WASSCE means Excellent, B3 is B (Very Good), C4 is C (Good), C5 and C6 are D (Credit), D7 and E8 are E (Pass) and F9 is F (Fail).
WAEC internal can be easier because you're have been well prepared for the papers most recently (SS1 to 3). People usually write GCE while they'd abandoned books for months - if not years. This may make it more difficult to pass. There are other reasons WAEC internal could be more convenient as detailed in this post.
You can use WAEC GCE, NECO GCE, NABTEB GCE to gain admission into UNILAG. And any possible combination is acceptable by the university.
NECO seems less difficult compared to WAEC but not also easy to make A's.
Is D7 accepted in the University of Ghana? Minister of State in charge of Tertiary Education, Professor Kwesi Yankah has suggested that students who get D7 and E8 in their final exams, should be considered in University admissions.
So, if yours is an internal examination, kindly go to your school for collection. For private candidates, you need to go to the nearest WAEC office and make inquiry. Just remember, if it's been more than a year since your certificate was released, you will have to pay a fee to collect your certificate.
Currently, waec no longer allow students to go home with their question papers. So, when you ask? does waec repeat past questions? Just have it in mind that the past questions you are talking about is the old past questions. And we all know that waec usually change syllabus, and English language do change as well.
Though Economics is a subject that cut across all departments in secondary, Economics is a core subject for commercial students. You can't escape Economics. Many schools may accept D7 or E8 in Mathematics and English for some courses but for Economics, you must have credit?
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.
It means that you have scored 39% or less on your exam. It is a failure grade. E8 (40-44%) and D7 (45-49%) are passing grades. C6 (50-54%), C5 (55-59%) and C4 (60-64%) are credit grades.
The fact is your O'level result; be it WAEC , NECO or NABTEB is valid for a life time and has no expiration date. The Examination conducted by these examination bodies is known as ?achievement test? and therefore the certificates awarded are valid forever.
... 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; ...
The most common reason why students forget is because the material is under learned. To remember something, it must first be learned, that is, stored in long-term memory. If you don't do what is necessary to get information into your long-term memory, you have under learned the material and forgetting is normal.
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 to stop amendment on certificates in 2017. The West African Examinations Council says it will stop amending the date of birth and other entries on the certificate of candidates from January 1, 2017.
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.