NECO Chemistry Related Questions and Answers2022/2023 ( Essay and Objects)

 NECO Chemistry Questions and Answers2022/ 2023 ( Essay and Objects) 

 

 

 

 

 

 NECO Chemistry Questions and Answers 2022. I will be showing you past Chemistry objects and proposition repeated questions for free in this post. You will also understand how NECO Chemistry questions are set and how to answer them. 

 

 NECO 

 

 The National Examinations Council (NECO) is an examination body in Nigeria that conducts the Elderly Secondary Certificate Examination. 

 

 

 

 1 NECO Chemistry Objects and Essay Answers 2022 ( Exhibition) 

 

 

 

 2 NECO Chemistry Questions And Answers 2022 ( Paper 2) 

 

 

 

 3 Tips on How to Pass 2022 NECO Chemistry Examinations 

 

3.0.1 Have a Target and Work Towards Appearing it 

 

3.0.2 Get the Recommended Textbook on Chemistry for 2022 NECO Examination 

 

3.0.3 Do not Skip Chemistry Samples and Exercise you Will Come Across While Reading 

 

 NECO Chemistry Objects and Essay Answers 2022 ( Exhibition) 

 

 

 

 The 2022 NECO Chemistry exhibition will be posted also during the NECO Chemistry examination. Keep checking and reloading this runner for the answers. 

 

 

 

 NECO 2022 Chemistry Answers Loading. 

 

 

 

 Moment’s NECO Chem OBJ Answers … (2021 Answers) 

 

 

 

 

 

 

 

 1-10 EECEBAEEBB 

 

 11-20 DDDBEACABB 

 

 21-30 CDECCDAAAB 

 

 31-40 BAECBBCDAC 

 

 41-50 CECCEBDBDC 

 

 51-60 CEBEEDDBAE 

 

 

 

 ============================ 

 

 

 

 (1) 

 

 

 

 

 

 

 

 

 

 =========================== 

 

 

 

 (2) 

 

 

 

 

 

 

 

 

 

 

 

 ========================== 

 

 

 

 (3) 

 

 

 

 

 

 

 

 ========================== 

 

 

 

 (4) 

 

 

 

 

 

 

 

 ============================ 

 

 

 

 (5) 

 

 

 

 

 

 (6) 

 

 

 

 

 

 

 

 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —-

 

 

 

 The following NECO Chemistry questions are questions to anticipate in the 2022 NECO examination. 

 

 

 

 

 

 1. The minimum amount of energy demanded for effective collisions between replying patches is known 

 

 A) Activation energy 

 B) Bond energy 

 

 C) Kinetic energy 

 

 D) Implicit energy 

 

 

 

 

 

 

 

 2. The bond formed between H2OH2O and H H to form the hydroxonium H3O H3O is 

 

 A) Dative 

 

 B) Covalent 

 

 C) Electrovalent 

 

 D) Ionic 

 

 

 

 3. An element XX forms the following oxides X2O, XOX2O, XOandXO2.XO2. This phenomenon illustrates the law of,. 

 

 A) Conservation of mass 

 

 B) Definite proportion 

 

 C) Mass action 

 

 D) Multiple proportion 

 

 

 

 

 

 

 

 4. How multitudinous intelligencers of oxygen would contain1.204 ×10241.204 × 1024 molecules? 

 

 NB Avogadro’s constant (NA) = 6.02 × 1023 = 6.02 × 1023 

 

 A) 1 

 

 B) 2 

 

 C) 3 

 

 D) 4 

 

 

 

 See NECO Timetable 

 

 

 

 5. Which of the following statements about solids is correct? 

 

 A) Solid patches are less orderly than those of a liquid 

 

 B) Solid have lower viscosity than liquids 

 

 C) Solid patches have lower kinetic powers than those of liquids 

 

 D) Solid patches can't be easily compressed 

 

 

 

 6. Which of the following outfit can be used to measure a specific volume of a liquid directly? 

 

 A) Demitasse 

 

 B) Conical teacup 

 

 C) Measuring cyclinder 

 

 D) Pipette 

 

 

 

 7. The general gas equation PVT = KPVT = K is a combination of 

 

 A) Boyle’s and Charles’ laws 

 

 B) Boyle’s and Graham’s laws 

 

 C) Charles’and Graham’s laws 

 

 D) Dalton’s and Graham’s laws 

 

 

 

 8. The spreading of the scent of a flower in a theater is an illustration of? 

 

 A) Brownian stir 

 

 B) Diffusion 

 

 C) Osmosis 

 

 D) Tynadal effect 

 

 

 

 9. Propane and carbon (IV) oxide circumlocutory at the same rate because (H = 1.00, C = 12.0, O = 16.0) 

 

 Options 

 

 A) They are both feasts 

 

 B) Their molecules contain carbon 

 

 C) They have the same relative molecular mass 

 

 D) Both are thick than air 

 

 

 

 1O. The energy which accompanies the addition of an electron to an insulated gassy grain is 

 

 A) Atomization 

 

 B) Electronegativity 

 

 C) Electron affinity 

 

 D) Ionization 

 

 

 

 11. A sample of hard water contains some calcium sulphate and calcium hydrogen carbonate. The total hardness may therefore be removed by 

 

A. boiling the water 

 

B. adding spare calcium hydroxide 

 

C. adding a calculated amount of calcium hydroxide 

 

D. adding sodium carbonate 

 

E. adding magnesium hydroxide 

 

 

 

 12. During the electrolysis of bull II sulphate between platinum electrodes, if acid test result is added to the anode cell, 

.A. the acid test turns blue but no gas is evolved 

 

B. the acid test turns blue and oxygen is evolved 

 

C. the acid test turns blue and hydrogen is evolved 

 

D. the acid test turns red and oxygen is evolved 

 

E. the acid test turns red and also becomes colourless 

 

 

 

 

 

 

 

 13. The response between an organic acid and an alcohol in the presence of an acid catalyst is known as; 

 

A. saponification 

 

B. dehydration 

 

C. esterification 

 

D. hydrolysis 

 

E. hydration 

 

 

 

 14. The IUPAC names of the mixes CH3COOH and CH2 = CH2 are singly; 

 

A. acetic acid and ethane 

 

B. ethanoic acid and ethene 

 

C. methanoic acid and ethylene 

 

D. ethanol and ethene 

 

E. acetic acid and ethylene 

 

 

 

 15. Still, how long will it take 60cm3 of chlorine to circumlocutory through the same pot, if the vapour viscosity of oxygen and chlorine are 16 and 36 singly? 

. 

, If 30cm3 of oxygen diffuses through a porous pot in 7seconds.A.9.3 sec 

 

B. 14 sec 

 

C. 21 sec 

 

D. 28 sec 

 

E.30.3 sec 

 

 

 

 16. When heat is absorbed during a chemical response, the response is said to be 

. 

A. thermodynamic 

 

B. exothermic 

 

C. isothermal 

 

D. endothermic 

 

E. thermostatic 

 

 

 

 17. When large hydrocarbon molecules are toast at high temperature in the presence of a catalyst to give lower molecules, the process is known as 

. 

A. corruption 

 

B. polymerization 

 

C. cracking 

 

D. declination 

 

E. distillation 

 

 

 

 18. The pH of four results W, X, Y, Z are 4, 6, 8, 10 singly, therefore 

. 

A. none of these results is acidic 

 

B. the pH of Y is made farther acidic by addition of distilled water 

 

C. Z is the most acidic result 

 

D. W is the most acidic result 

 

E. X is neutral 

 

 

 

 19. When each of the nitrates of Potassium, Magnesium and iron is toast, 

. 

A. all the nitrates decay to their oxides 

 

B. the nitrate of magnesium gives the nitrite and oxygen 

 

C. the nitrates of iron magnesium and iron give the oxides 

 

 

 

D. the nitrate of iron gives the nitrite and oxygen 

 

E. the nitrate of the magnesium is not decomposed 

 

 

 

 2O. Which of the following substance can't replace hydrogen from water or reek? 

 

A. Sodium 

 

B. Magnesium 

 

C. Iron 

 

D. Calcium 

 

E. Copper 

 

 

 

 21. small volume of solid ammonium chloride (NH4Cl) was toast gently in a test tube, the solid gradually disappears to produce two feasts. Subsequently, a white cloudy deposit was observed on the cooler part of the test tube. The ammonium chloride is said to have endured 

 

A. distillation 

 

B. sublimation 

 

C. rush 

 

D. evaporation 

 

E. corruption 

 

 

 

 22. Rudiments P, Q, R, S have 6, 11, 15, 17 electrons singly, therefore, 

. 

A. P will form an electrovalent bond with R 

 

B. Q will form a covalent bond with S 

C. R will form an electrovalent bond with S 

 

D. Q will form an electrovalent bond with S 

 

E. Q will form a covalent bond with R 

 

 

 

 23. An element X forms the following mixes with chlorine; XCl4, XCl3, XCl2. This illustrates the 

 

A. law of multiple proportions 

 

B. law of chemical proportions 

 

C. law of simple proportions 

 

D. law of conservation of mass 

 

E. law of definite proportions 

 

 

 

 24. The oxidation state of chlorine in potassium chlorate is 

 

A. 1 

 

B. 2 

 

C. 3 

 

D. 5 

 

E. 7 

 

 

 

 25. 10 When air which contains the feasts Oxygen, nitrogen, carbondioxide, water vapour and the rare feasts, is passed through alkaline pyrogallol and also over quicklime, the only feasts left are; 

. 

A. nitrogen and carbondioxide 

 

B. the rare feasts 

 

C. nitrogen and oxygen 

 

D. nitrogen and the rare feasts 

 

E. nitrogen, carbondioxide and the rare 

. 

 

 

 26. Which of the following statements is NOT correct? 

 

 A. The average kinetic energy of a gas is directly commensurate to its temperature 

 

 

 

 B. At constant tempearture, the volume of a gas increases as the pressure increases 

. 

 

 

 C. The pressure of a gas is inversely commensurate to its volume 

 

 D. The temperature of a gas is directly commensurate to its volume 

 

 E. The collisions of molecules with each other are inelastic 

 

 

 

 27. Zinc Oxide is a 

 

A. Basic Oxide 

 

B. Acidic Oxide 

 

C. Amphoteric Oxide 

 

D. Neutral Oxide 

 

E. Reactive Oxide 

 

 

 

 28. When sodium chloride and metallic sodium are each dissolved in water 

 

A. both processes are exothermic 

 

B. both processes are endothermic 

 

C. the dissolution of metallic sodium is endothermic 

 

D. the dissolution of metallic sodium is exothermic 

 

E. the dissolution of sodium chloride is explosive 

 

 

 

 29. The periodic type of rudiments is an arrangement of the rudiments in order of their 

 

A. Atomic Weights 

 

B. Isotopic Weights 

 

C. Molecular Weights 

 

D. Atomic Figures 

 

E. Atomic Millions 

 

 

 

 3O. In the response between sodium hydroxide and sulphuric acid results, what volume of0.5 molar sodium hydroxide would exactly neutralise 10cm3 of1.25 molar sulphuric acid? 

 

A. 5cm3 

 

B. 10cm3 

 

C. 20cm3 

 

D. 25cm3 

 

E. 50cm3