NECO Chemistry Questions.

1. a) (i) What is the structure of the atom as proposed by Rutherford?
(ii) Distinguish between the atomic number and the mass number of an element.
(iii) Explain briefly why the relative atomic mass of chlorine is not a whole number.

b) (i) What is meant by first ionization energy?
(ii) List three properties of electrovalent compounds
(iii) Consider the following pairs of elements: 9F and 17CL; 12Mg and 20Ca.

2. a) (i) Define nuclear fission.
(ii) Consider the equilibrium reaction represented by the following equation: A2(g) + 3B2(g)   2AB3(g); H = + kJmol-1. Explain briefly the effect of each of the following changes on the equilibrium composition:

  • increase in the concentration of B;
  • decrease in pressure of the system;
  • addition of catalyst.

b) The lattice energies of three sodium halides are as follows:

Explain briefly the trend.

c) State the property exhibited by nitrogen (IV) oxide in each of the following reactions:
(i) 4Cu + 2NO2        4CuO + N2;
(ii) H2O+ 2NO2       HNO3 + HNO2.

3. a) (i) Define saturated solution.
(ii) Distinguish between dative bond and covalent bond.
(iii) Explain why sugar and common salt do not conduct electricity in the solid state.

(iii) State the type of intermolecular forces present in: hydrogen fluoride; argon

(iv) Consider the compounds with the following structures:
S – H —-N and 0 – H —–N
In which of the compounds is the hydrogen bond stronger? Give reason for your answer.

(b) (i) State Dalton’s Law of Partial Pressure.
(ii) If 200cm3 of carbon(IV) oxide were collected over water at 18°C and 700 mmHg, determine the volume of the dry gas at s.t.p.
[ standard vapour pressure of water at 18°C = 15 mmHg]

4. a) (i) Define ionic bond.
(ii) What type of bond(s) exist(s) in: magnesium oxide; ammonium ion?

b) (i) Determine the oxidation number of sulphur in Na2S2O3.
(ii) State Faraday’s first law.
(iii) Give one example each of: acid salt; base salt.

c) (i) Name the type of energy change that occurs in each of the following processes;
I2(s)     ———>     I2(g);
C1(g) + e-      ——>     C1-(g).
(ii) State the effect of each of the following aqueous solutions on litmus paper:
(iii) Define the term efflorescence.
(iv) Give two uses of activated charcoal.

d) (i) State one use of each of the following processes in the chemical industry: hydrogenation of vegetable oil; cracking; esterification.
(ii) Calculate the amount of silver deposited in moles when 10920 coulombs of electricity is passed through a solution of a silver salt.
[Faraday constant = 96500 C mol-1]

5. a) (i) Define in terms of electron transfer
I.  oxidizing agent;
II.  reducing agent.
(ii) Write a balanced equation to show that carbon is a reducing agent.
(iii) State the change in oxidation number of the specie that reacted with carbon in 5 (a)(ii).

b) A gas X has a vapour density of 32. It reacts with sodium hydroxide solution to form salt and water only.  It decolourizes acidified potassium tetraoxomanganate (VII) solution and reacts with H2S to form sulphur.  Using the information provided:
identify gas X; state two properties exhibited by X; give two uses of X.

c) Consider the following substances:
(1) sodium;
(2) lead (II) iodide;
(3) hydrogen;
(4) magnesium;
(5) oxygen.
Which of the substances
(i) conducts electricity?
(ii) is produced at the cathode during electrolysis of H2SO4(aq)?
(iii) corresponds to the molecular formula AB2  ?
(iv) is an alkaline earth metal?

d) (i) Define the term salt.
(ii) Mention two types of salt.
(iii) Give an example of each of the salts mentioned in 5(d)(ii) above.

e) In a neutralization reaction, dilute tetraoxosulphate (VI) acid completely reacted with sodium hydroxide solution.
(i) Write a balanced equation for the reaction.
(ii) How many moles of sodium hydroxide would be required for the complete neutralization of 0.50 moles of  tetraoxosulphate (VI) acid?

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NECO Marketing Theory Questions.

1. Explain the following classification of products with two examples each from agricultural based products,
(a) industrial products;
(b) consumer products;
(c) primary products;
(d) secondary products;

2.(a) State five reasons companies conduct marketing research,
(b) Explain the following sales promotional tools:

(i) price-off;
(ii) salesman competition;
(iii)Free gifts;
(iv) premium offer
(v) samples;

3. (a) Illustrate any four channels of distribution for consumer products.
(b) List and explain any four pricing strategies.

4. (a) What is transportation?
(b) List and explain six factors affecting the choice of transportation mode,

5. (a) What is a market union
(b) State four functions of market facilitators,
(c) The women in Eke market formed a Garri Seller’s Union. State five role of this Union.

6. Mamaput is a popular eatery in the city centre and wants to open up more outlets in other parts of the city.
(a) State four sources of fund to finance the proposed expansion by Mamaput.
(b) Explain four factors that would influence the location of the new outlets.

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1. You are dissatisfied with some practices in your school. Write a letter to your friend in another school discussing at least three of these practices and the improvement you desire.

2. Write an article suitable for publication in a national newspaper on the high cost of living, suggesting at least three ways in which the government of your country can tackle the problem.

3. Write a letter to the Chairman of the Environmental Protection Agency on the effects of illegal felling of trees and suggest ways to remedy the situation.

4. You are the main speaker in a debate on the topic: Children of literate parents perform better in school than those of illiterate parents. Write your argument for or against the motion.

5. Write a story to illustrate the saying: A bird in hand is worth two in the bush.

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NECO Civic Education Theory Questions.


Answer two questions from each section

1.(a) Explain the meaning of values,
(b) Identify four ways through which the society can promote justice and selflessness.

2.(a) What is the meaning of UIV?
(b) Discuss four symptoms and effects of HIV/AIDs.

3. Discuss five main functions of the legislature.

4.(a) What is cuitism?
(b) Explain three reasons why students join cult,
(c) Identify three preventive measures against cultism.

5. Explain five consequences of human trafficking,
6.(a) What is the meaning of NAPTIP?
(b) Explain four functions of NAPTIP.

7.(a) Define public service,
(b) Discuss four ways of improving public service in Nigeria.

8.(a) What is the meaning of NDLEA?
(b) What is drug abuse?
(c) Explain three ways of preventing drug abuse.

(i) What is the possible cause of the pop-up?
(ii) State a possible source of the element causing the pop-up.
(iii) What measure would be necessary to stop the pop-up from reoccurring?

(c) Mr. Aneke is billed to address a large audience in an auditorium.
(i) What computer application package is suitable to prepare and deliver his speech?
(ii) State the output device that can be used to transmit Mr. Aneke’s speech note from his computer to a large screen in the auditorium.

(d) Give two types of computer network.

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