Home CBT TEST FUOYE CHM 101 CBT PRACTICE TEST EXAM MODE

CBT TEST

FUOYE CHM 101 CBT PRACTICE TEST EXAM MODE

Phil

March 6, 2023

239

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

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

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

I wish you success

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/50

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Created on January 07, 2023 By

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CHM 101

1 / 50

1. A zeroth order reaction is one whose

A. Rate is zero

B. Rate is independent of reactant concentration

C. Rate is dependent on none of the reactants

D. Rate can be found where [A] t =-kt + ln[A] o

2 / 50

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

A. -2

B. +7

C. +3

D. +6

3 / 50

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

A. +7

B. -2

C. +3

D. +6

4 / 50

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

A. -2.8°C

B. -1.9°C

C. -6.5°C

D. -0.93°C

5 / 50

5. Radiation is detected by its ___________ properties

A. Gravitational

B. Ionizing

C. Thermal

D. Kinetic

6 / 50

6. A saturated solution is defined as

A. A solution that is in equilibrium with pure solute

B. A solution that is not in equilibrium with both pure solvent and undissolved solute

C. A concentrated solution

D. A solution that is in equilibrium with undisolved solute

7 / 50

An isotope has a half-life of 30 minutes. Given an original sample of 100 g of the isotope, how much will be left after an hour?

A. 100 grams

B. 0 grams

C. 25 grams

D. 50 grams

8 / 50

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

A. Anode, cathode

B. Cathode, cathode

C. Anode, anode

D. Cathode, anode

9 / 50

9. Chlorine belongs to the ____________ group on the periodic table

A. Halogen

B. Alkaline earth metal

C. Alkali metal

D. Noble

10 / 50

10. Which of the following is not an Arrhenius acid?

A. H2SO3

B. HF

C. HCLO

D. KOH

11 / 50

11. Elements with ___________ atomic mass are best possible candidates for a fusion reaction

A. Very heavy

B. Moderate

C. Very low

D. Moderate to heavy

12 / 50

12.

The effect of ionizing radiation depend on

A. Length of exposure to radiation

B. All of the above

C. Location of source (internal or external)

D. Type and energy of radiation

13 / 50

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

A. Fluorine

B. Chlorine

C. Bromine

D. Iodine

14 / 50

14. What symbol is used to express the facor,10^-6?

A. µ

B. n

C. M

D. m

15 / 50

15. The factor 0.001 corresponds to which prefix

A. Centi

B. deka

C. Milli

D. Deci

16 / 50

16. Gamma radiation can be described as

A. High energy electromagnetic radiation

B. A helium nucleus

C. A negatively charged free electron

D. positively charged free electron

17 / 50

17. 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

A. 43.8g

B. 21.9g

C. 14.7g

D. 48.4g

18 / 50

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

A. 6.3g

B. 5.67g

C. 30g

D. 0.3g

19 / 50

19. Elements in a periodic group have similar

A. Masses

B. Physical properties

C. Chemical properties

D. Densities

20 / 50

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

Mg =24.31

N= 14.01

O= 16

A. 0.1889%

B. 18.99%

C. 0.01889%

D. 1.889%

21 / 50

21. What is the minimum energy barrier that must be overcomed for a chemical reaction to occur

A. Rate Limiting Energy

B. Potential Energy

C. Net Energy

D. Activation Energy

22 / 50

22. Which of the following is not used to describe the condition of a gas?

A. Temperature

B. Pressure

C. Number of moles

D. Electronic configuration

23 / 50

23.

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

A. All of these are affected by the presence of a catalyst

B. Lowers only the energy of the reactants and products

C. Lowers only the activation Energy

D. Raises only the energy of the products

24 / 50

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

A. Mass Number

B. None of these

C. Atomic Number

D. Charge on the atom or ion

25 / 50

25. Ozone is unstable, decomposing to oxygen, as shown in the balanced equation 2O2 ➡ 3O2. In this reaction, how many grams of oxygen can be formed from the decomposition of 96g of ozone?

A. 6g

B. 96g

C. 16g

D. 32g

26 / 50

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

A. Concentration cell

B. Fuel Cell

C. Galvanic cell

D. Electrolytic Cell

27 / 50

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

A. 3.41g

B. 1.71g

C. 0.341g

D. 6.82g

28 / 50

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

A. N

B. Mg

C. C

D. Al

29 / 50

29. Which of the following supports Boyles law

A. K=PV

B. T = KV

C. PV/R

D. NRT=KV

30 / 50

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

A. 1s2 2s2 2p6 3s2 3p6 4s1

B. 1s2 2s2 2p6

C. 1s2 2s2 2p6 3s2 3p6

D. 1s2 2s2 2p6 3s2

31 / 50

31. The energy of motion is

A. Dam energy

B. Electrical Energy

C. Kinetic Energy

D. Reserve energy

32 / 50

32. What is the Mass number of Na?

A. 23

B. 11

C. 20

D. 22

33 / 50

33. Molarity is defined as ______

A. Moles of solute per litre of solvent

B. Moles of solvent per liter of solution

C. Moles solvent per liter of solvent

D. Moles of solute per liter of solution

34 / 50

34. Using the method of initial rates for the reaction A➡B, if the initial concentration of A is doubled and the rate of reaction quadruples, what is the order of reaction with respect to A?

A. Second

B. First

C. Fourth

D. Zeroth

35 / 50

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

A. Period 3 And Group 3A

B. Period 3 And Group 5A

C. Period 4 and Group 3A

D. Period 4 and Group 5A

36 / 50

36. Who is the Dean of Faculty of Science in Fuoye

A. Dr. Malomo

B. Dr. Okolo

C. Dr. Lawal

D. Dr. Shakirudeen

37 / 50

37. The binding energy is defined as

A. The amount of energy absorbed when electrons are added to an ion

B. The amount of energy absorbed when protons and neutrons form a nucleus

C. The amount of energy released when electrons are removed from the atom

D. The amount of energy required to break apart a nucleus into individual protons and neutrons

38 / 50

38. What is the overall reaction order for the reaction that has the rate law: k[H2] [NO] 2

A. Second order

B. Third order

C. Zero order

D. First order

39 / 50

39. How many grams of chromium metal are plated out when a constant current of 8.00A is passed through an aqueous solution containing Cr3+ ions for 40 minutes

A. 31.0g

B. 3.45g

C. 6.15g

D. 10.3g

40 / 50

40. According to history, the concept that all matter is composed of atom was first proposed by

A. Dalton and widely accepted within a few decades

B. Dalton but not accepted till Mendelev

C. Dalton but not accepted until the work of Einstein

D. Democritus but not widely accepted till modern times

41 / 50

41. Which of the following compounds would be soluble in water?

A. Na2SO4

B. PbCrO4

C. AgBr

D. Pb(OH)2

42 / 50

42. Which group reacts violently with water?

A. Alkali metals

B. Noble gases

C. Alkaline earth metal

D. Halogens

43 / 50

43.

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

A. Potential Energy

B. Activation Energy

C. Net energy

D. Rate limiting energy

44 / 50

44.

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

A. Enthalpy

B. Temperature

C. Free Energy

D. Entropy

45 / 50

45. The Element that best describes Alpha decay is?

A. Helium

B. Calcium

C. Methane

D. Sodium

46 / 50

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

A. Protons, electrons

B. Electron, neutron

C. Nucleon, neutron

D. Protons, neutrons

47 / 50

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

A. Electrolytic Cell

B. Fuel Cell

C. Concentration cell

D. Galvanic cell

48 / 50

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

A. NH2OH

B. None of these

C. CH3NH2

D. Both CH3NH2 and NH2OH

49 / 50

49. Water is an example of

A. Compound

B. An element

C. An ion

D. A mixture

50 / 50

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

A. 0.272

B. 0.154

C. 0.846

D. 0.214

Your score is

The average score is 47%

3.1 10 votes

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2 Comments

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Ernest

3 months ago

Please I don’t know if it is the website or my phone. It’s hard to change my answers. When I tried doing so, it might end up picking another answer or just not pick any. Meanwhile an indicator shows that one answer has been picked. In the end the website shows that I didn’t answer the question in the end.

Author

Reply to Ernest

I’m really sorry you’re going through this. I’ll look into it ,but I doubt if the issue is from my website.

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