JUPEB Chemistry Past Questions pdf. JUPEB Chemistry Exam is one of the toughest examinations of the Joint Joint Universities Preliminary Examinations Board (JUPEB). This article brings you information on the components of Jupeb chemistry past question and methods you could use to explore the past question, how to download or get it into your smartphone or any other technology gadget that you can use to study for your exams such as the Ipad, computer etc.

While preparing for any kind of exam, there is a need to show perfection in preparation. This gives you confidence and prepares your mind to conquer fear and any other uncertainty that may pose itself to intimidate you on account of the exams. getting the past question to study and practice for the JUPEB chemistry exams will give help you to achieve the desired result in the exams.

Not only will this past question expose you to the questions that have been asked years back as most of those questions get repeated every year, but it will also show you what to expect as you are preparing for the exams and the correct answer to give when you are asked such question.

The exams questions will not be new to you because the past question and answers that we offer comprise a list of questions asked previously during the exams, and some will just be rephrased. So if you don’t have a copy of this past question, then you are losing out. It also provides useful information about the types of questions to expect. You will find out the number of questions you will see in the examination.

1. It enlightens you on the scope of the exam. Hence, you won’t be in the dark about questions to expect in the examination. In like manner, you won’t develop examination fever as a result of not knowing where the questions will be coming from.

3. It guides you on how to answer exam technical questions.

This past question follows the original pattern of JUPEB chemistry question which is the multi-choice and theory. The multichoice section has the question with suggested answers from A-D, you are expected to choose the most appropriate answer for each question. This is where the past question comes in. We have carefully compiled the questions and provided the correct answer to them to make it easier for the users.

SECTION A: MULTIPLE CHOICE QUESTIONS Answer all questions in this section. Use the OMR answer sheet provided to answer the questions. Follow the instructions on the OMR sheet.

SECTION B: ESSAY QUESTIONS Answer FOUR questions; ONE question from each course . Ensure you read and follow all the Instructions on the cover page of the Answer Booklet.

SECTION A: MULTIPLE CHOICE QUESTIONS Answer All Questions.

1. The reproducibility or repeatability of measurement is termed A. Accuracy B. Precision C. Range D. Confidence Interval

2. The alpha (α -) scattering experiment is synonymous with A. J. J. Thomson B. Ernest Rutherford C. James Chadwick D. Henry Mosley

3. According to Brønsted-Lowry, an acid is a\an A. proton acceptor. B. proton donor. C. electron acceptor. D. electron donor.

4. Isotopes of hydrogen differ from one another in A. atomic number. B. number of protons. C. number of electrons. D. number of neutrons.

5. A solution of known concentration is termed a A. standard solution. B. unsaturated solution. C. saturated solution. D. supersaturated solution.

6. Which of the following is the reason why CCl 4 is non-polar? A. The polar bonds cancel each other. B. The molecule is non-linear. C. The molecule is covalent. D. Small electronegativity difference between C and Cl.

SECTION B: ESSAY QUESTIONS Answer FOUR Questions in all; ONE from each Course. CHM 001: GENERAL CHEMISTRY 1 (a) Distinguish between ionization energy and electron affinity giving an example in each case. [ 2 marks] (b) Briefly describe and give reasons for the observed trends of the following atomic properties in the periodic table (i) Atomic size (ii) Ionization energy (iii) Electron affinity. [ 3 marks] (c) Balance the following oxidation-reduction reactions, which occur in acidic solution, using half-reaction method: Cr 2 O 72- (aq) + Cl – (aq) → Cr 3+ (aq) + Cl 2 (g) [3 marks] (d) Assign oxidation number to each atom in the following reaction and hence identify the oxidizing agent and reducing agent in each reaction. (i) 2Al(s) + 3H 2 SO 4 (aq) → Al 2 (SO 4 ) 3 (aq) + 3H 2 (g) (ii) PbO (s) + CO (g) → Pb(s) + CO 2 (g) [2 marks] [Total = 10 marks]

2. (a) A compound X is known to contain carbon, hydrogen and oxygen only. When it is burnt completely in excess oxygen, carbon dioxide and water are given out as the only products. It is found that 0.46g of X gives 0.88g carbon dioxide and 0.54g water. Find the empirical formula of compound X (R.A. M : H=1.0, C=12.0, O=16.0) [4 marks]

(b) (i) Differentiate between extensive and intensive property (ii) Give one example each of extensive and intensive property [2 marks]

(c) (i) State one information that each of the three (3) quantum numbers n, l and m give about the atomic orbital (ii) Identify the orbitals described by the following quantum numbers and arrange them in order of increasing energy. n = 4 l = 0 m = 0 n = 3 l = 2 m = – 1 n = 4 l = 2 m = 2 n = 3 l = 1 m = 0

3. (a) (i) Write the van der Waals equation and state all the parameters. [ 2 marks] (ii) If sulfur (iv) oxide were an ideal gas, the pressure at 0.0 °C exerted by 1.0 mole occupying 22.4 L would be 1.0 atm (22.4 L is the molar volume of an ideal gas at (STP). Use the Van der Waals equation to estimate the pressure of this volume of 1.0 mol. 𝑆𝑂 2 at 0.0 °C . ( Take 𝑎 = 6.865 𝐿 2 . 𝑎𝑡𝑚/𝑚𝑜𝑙 2 , b = 0.05679 L/mol.) [2 marks]

(b) Briefly account for the following observation, when a solution of sodium iodide and potassium nitrate are mixed together, no visible reaction is observed, however when a solution of lead nitrate is substituted for potassium nitrate, a visible reaction is observed and a precipitate is formed. [ 2 marks]

(c) (i) Distinguish between natural and induced radioactivity.

(ii) The isotope 9038 Sr is one of the extremely hazardous species in the fallout from a nuclear fission explosion. A 0.600 g sample diminishes to 0.395 g in ten years. Calculate the half-life. [4 marks] [Total = 10 marks]

4. (a) (i) State the law of mass action. (ii) Using relevant illustrative reaction, distinguish between the reaction quotient (Q) and the equilibrium constant (K).

The complete JUPEB Chemistry Past Questions And Answers in PDF Format with accurate answers is N2,000.

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InfoGuide Nigeria is a multi-author blog in Nigeria founded by Ifiokobong Ibanga. The team comprises professionals and Consultants from different fields of human endeavour.

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InfoGuide Nigeria is a multi-author blog in Nigeria founded by Ifiokobong Ibanga. The team comprises professionals and Consultants from different fields of human endeavour.

Here we publish several helpful articles in various categories, such as how-to articles, where to find things, resources, business, interviews and reviews.

Our aim is to provide daily living guide for Nigerians and her friends.

The content on the InfoGuide Nigeria is provided as general information only. The ideas expressed on this site are solely the opinions of the author(s) and do not necessarily represent the opinions of anyone else. The author may or may not have a financial interest in any company or advertiser referenced. Any action taken as a result of information, analysis, or advertisement on this site is ultimately the responsibility of the reader. Read more… Terms of Use.