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EBSU CHM 101 CBT Practice

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Phil
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Hello

Are you preparing for your upcoming CBT exams and want a solid way to test your knowledge and build confidence? We’ve got something exciting for you—CBT Practice Questions with a built-in timer to simulate real exam pressure and boost your speed.

Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

 

If you can get at least 60%, you can be rest assured that you’ll ace CHM 101 exam

 

PS

 

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

 

Note

 

Do not be in a hurry to answer the questions

 

Do not waste time on a question you don’t know

 

Move as fast as possible and starting with questions that don’t have calculation first to save time

 

Always crosscheck

 

Don’t be in a hurry to submit, you are not in a competition

 

Don’t be scared. Getting an A is easy

 

Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book

 

Please do well to use our comment box incase there’s a message you want to pass to us

 

Want to stay updated with exam info, materials, and more practice resources?

 

Join the UNDERGRAGRA WhatsApp Channel now!

 

Here’s the link: https://whatsapp.com/channel/0029VakX28dFi8xdORrhjI34

Keep pushing, stay focused, and good luck on your exams. You’ve got this!

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Created on By Phil

EBSU CHM 101

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1. The factor 0.001 corresponds to which prefix

2 / 50

2. Which cell involves a non-spontaneous redox reaction?

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3. A substance that ionizes in solution to produce hydroxyl ion is

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4. Which cell involves a non-spontaneous redox reaction?

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5. 1s2, 2s2, 2p6, 3s2, 3p6, 3d7, 4s2
An element with the electronic configuration above is a

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6. Water is an example of

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7. What is the electronic configuration of Potassium (K)?

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8.

Which of the following can be interpreted as a measure of randomness

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9. Catalyst ................... the rate of reaction by ................... the activation energy

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10. The solution that will conduct the highest amount of electricity is

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11. What is the oxidation number of the chromium atom in K2Cr2O4?

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12.

The effect of ionizing radiation depend on

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13. What is the identity of the element with 6 protons, 7 Neutrons and 6 electrons

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14. Of the following, which element has the highest first ionization energy

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15. What is the mole fraction of ethanol in a solution made by dissolving 25g of ethanol, C2H5OH, in 53.6g of Water

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16. The energy of motion is

17 / 50

17. How many grams of KNO3 are needed to make 250ML of a solution that is 0.135M

 

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18.

What is the expected freezing point of a 0.50m solution of Na2CO3 in water? Kf for water is 1.86°C/m

19 / 50

19.

During an electrochemical reaction, electrons move through the external circuit toward the __________ and positive ion in the cell move toward the ____________.

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20. The Element that best describes Alpha decay is?

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21. A reaction in which the same substance on the reactant side is being oxidized and reduced simultaneously is known as

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22. Isotopes have the same number of __________ but different numbers of ___________ in their nuclei

23 / 50

23. What is the oxidation number of the chromium atom in K2Cr2O7

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24. The rate of a reaction is directly proportional to the concentration of reactants. This is referred to as

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25. The number of molecules/ions of the reactants present in the balanced stoichiometric equation is referred to as:

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26. Radiation is detected by its ___________ properties

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27. The powers to which the concentration of each reactant is raised to give a correct dependence of rate on concentration is termed

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28. The half-life of a first order reaction depends on

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29. Elements in a periodic group have similar

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30.

What is the minimum energy barrier that must be overcome for a chemical reaction to occur

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31. Which group reacts violently with water?

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32. Water is best described as

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33. How many grams of nickel metal are plated out when a constant current of 15.0A is passed through aqueous NiCl2 for 80.0 minutes

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34. The ion that can be used as an oxidizing agent is

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35. What mass of HNO3(63g/mol) is contained in 300ml of 0.30 M HNO3 solution!

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36. What is the Mass number of Na?

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37. Elements P, Q, R, S have 6, 11, 15, 17 electrons respectively, therefore,

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38. The number of nucleons in an atom or ion is the same as the

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39. Substances that dissolve in water to release hydroxonium ion is known as

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40. An element that has the valence electronic configuration 3s2 3p3 belongs to which period and group?

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41. Catalyst speeds up the rate of

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42. The unit of rate constant, K, in a first order reaction is

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43. The sum of all exponents of the reactants as contained in the experimentally determined rate law is known as

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44.

A catalyst increases the rate of reaction by providing a different reaction pathway that

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45. Order of a given reaction can only be determined

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46. What is the pH of a neutral solution at 25 0C?

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47. If 30cm3 of gas at 50oC is warmed to 80o at a fixed pressure, the fractional increase in volume is

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48. Calculate the percentage composition of Nitrogen in Magnesium Nitrate Mg(No3)2

Mg =24.31

N= 14.01

O= 16

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49. Which of the following can be classified as a weak base?

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50. To balance a redox reaction in basic medium, 𝐻2𝑂 is added to the side with

Your score is

The average score is 28%

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