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Add past exam questions for WDU/CHM101,GST201,BUS101,BUS202
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udohjeremiah authored Jan 6, 2024
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294 changes: 294 additions & 0 deletions ...ast-questions-archive/wdu/basicinduschem/2022_2023/100-level/1st-semester/chm101/page.jsx
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import Questions from "@/components/Questions";
import Answers from "@/components/Answers";

export default function CHM303() {
return (
<Questions
school="western delta university"
college="natural and applied sciences"
department="basic and industrial chemistry"
session="2022/2023"
semester="first semester"
courseCode="CHM101"
courseTitle="general chemistry I"
allowedTime="2hrs: 30mins"
instruction="attempt FOUR questions only"
>
<li>
<h4 className="mb-2 font-bold">Question 1</h4>
<ol className="flex list-[lower-alpha] flex-col gap-2">
<li>
State Daltons atomic theory and its modifications{" "}
<strong className="whitespace-nowrap">(8 marks)</strong>
<Answers questionNumber="1a" />
</li>
<li>
Define:
<ol className="mx-4 list-[lower-roman]">
<li>atom</li>
<li>molecule</li>
<li>ion</li>
</ol>
<strong className="whitespace-nowrap">(3 marks)</strong>
<Answers questionNumber="1b" />
</li>
<li>
Briefly describe any three quantum numbers{" "}
<strong className="whitespace-nowrap">(6.5 marks)</strong>
<Answers questionNumber="1c" />
</li>
</ol>
</li>

<li>
<h4 className="mb-2 font-bold">Question 2</h4>
<ol className="flex list-[lower-alpha] flex-col gap-2">
<li>
<ol className="mx-4 list-[lower-roman]">
<li>
A compound is found to contain 26.56% potassium, 35.41%
chromium, and the remainder oxygen. Find its empirical formula
(K=39, Cr=52, O=16){" "}
<strong className="whitespace-nowrap">(4 marks)</strong>
<Answers questionNumber="2ai" />
</li>
<li>
Determine the molecular formula of the compound with an
empirical formula of CH and a formula mass of 78 (C=12, H=1){" "}
<strong className="whitespace-nowrap">(2 marks)</strong>
<Answers questionNumber="2aii" />
</li>
</ol>
</li>
<li>
Write the electronic configuration of the following:
<ol className="mx-4 list-[lower-roman]">
<li>Ca</li>
<li>
Ca<sup>2+</sup>
</li>
<li>
Zn<sup>2+</sup>
</li>
</ol>
<strong className="whitespace-nowrap">(4.5 marks)</strong>
<Answers questionNumber="2b" />
</li>
<li>
Consider the equation CuO + Zn &rarr; ZnO + Cu
<ol className="mx-4 list-[lower-roman]">
<li>
Write the oixdation and reduction half reaction{" "}
<strong className="whitespace-nowrap">(4 marks)</strong>
<Answers questionNumber="2ci" />
</li>
<li>
Identify the oxidizing and reducing agents{" "}
<strong className="whitespace-nowrap">(3 marks)</strong>
<Answers questionNumber="2cii" />
</li>
</ol>
</li>
</ol>
</li>

<li>
<h4 className="mb-2 font-bold">Question 3</h4>
<ol className="flex list-[lower-alpha] flex-col gap-2">
<li>
<ol className="mx-4 list-[lower-roman]">
<li>
Balance the redox reaction in an acidic medium Cr<sub>2</sub>O
<sub>7</sub>
<sup>2+</sup> + Fe<sup>2+</sup> &rarr; Cr<sup>3+</sup> + Fe
<sup>3+</sup>{" "}
<strong className="whitespace-nowrap">(8 marks)</strong>
<Answers questionNumber="3ai" />
</li>
<li>
Identify the oxidizing and reducing agent{" "}
<strong className="whitespace-nowrap">(2 marks)</strong>
<Answers questionNumber="3aii" />
</li>
</ol>
</li>
<li>
Calculate the oxidation number of
<ol className="mx-4 list-[lower-roman]">
<li>
Cr in K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>{" "}
<strong className="whitespace-nowrap">(2.5 marks)</strong>
<Answers questionNumber="3ci" />
</li>
<li>
S in Na<sub>2</sub>SO<sub>4</sub>{" "}
<strong className="whitespace-nowrap">(2.5 marks)</strong>
<Answers questionNumber="3cii" />
</li>
<li>
Mn in KMn0<sub>4</sub>{" "}
<strong className="whitespace-nowrap">(2.5 marks)</strong>
<Answers questionNumber="3ciii" />
</li>
</ol>
And hence the name of each compound
</li>
</ol>
</li>

<li>
<h4 className="mb-2 font-bold">Question 4</h4>
<ol className="flex list-[lower-alpha] flex-col gap-2">
<li>
Calculate the vapour pressure of a perfect solution of 95.0g of
glycerine (C<sub>2</sub>H<sub>5</sub>OH, 92.1g/mol) in 190.0g
ethanol (C<sub>2</sub>H<sub>5</sub>OH, 46.0g/mol) at 40
<sup>&deg;</sup>C. Given P<sup>0</sup>
<sub>ethanol</sub> at 40<sup>&deg;</sup>C is 135.3 torr. The
glycerine is non-volatile at this temperature{" "}
<strong className="whitespace-nowrap">(9 marks)</strong>
<Answers questionNumber="4a" />
</li>
<li>
Calculate the freezing point of an aqueous of sucrose whose
composition is 25.0g C<sub>12</sub>H<sub>22</sub>0<sub>11</sub> in
100.0g H<sub>2</sub>0. Given freezing ppoint of H<sub>2</sub>
0=0.0&deg;C, K<sub>r</sub> (water)=1.860cm<sup>-1</sup>, C=12, O=16,
H=1 <strong className="whitespace-nowrap">(8.5 marks)</strong>
<Answers questionNumber="4b" />
</li>
</ol>
</li>

<li>
<h4 className="mb-2 font-bold">Question 5</h4>
<ol className="flex list-[lower-alpha] flex-col gap-2">
<li>
Define acid and base according to:
<ol className="mx-4 list-[lower-roman]">
<li>
Arrhenius{" "}
<strong className="whitespace-nowrap">(1.5 marks)</strong>
<Answers questionNumber="5ai" />
</li>
<li>
Lewis <strong className="whitespace-nowrap">(1.5 marks)</strong>
<Answers questionNumber="5aii" />
</li>
</ol>
</li>
<li>
Write short notes on
<ol className="mx-4 list-[lower-roman]">
<li>
Normal salt{" "}
<strong className="whitespace-nowrap">(1.5 marks)</strong>
<Answers questionNumber="5bi" />
</li>
<li>
Acid salt{" "}
<strong className="whitespace-nowrap">(1.5 marks)</strong>
<Answers questionNumber="5bii" />
</li>
<li>
Complex Salt{" "}
<strong className="whitespace-nowrap">(1.5 marks)</strong>
<Answers questionNumber="5biii" />
</li>
</ol>
</li>
<li>
<ol className="mx-4 list-[lower-roman]">
<li>
Comment on five (5) essential postulates of kinetic theory of
ideal gases{" "}
<strong className="whitespace-nowrap">(5 marks)</strong>
<Answers questionNumber="5ci" />
</li>
<li>
State with equations three (3) laws governing the ideal gas
behavior{" "}
<strong className="whitespace-nowrap">(3 marks)</strong>
<Answers questionNumber="5cii" />
</li>
<li>
List and explain four (4) factors that affect the rate of
chemical reaction.{" "}
<strong className="whitespace-nowrap">(2 marks)</strong>
<Answers questionNumber="5ciii" />
</li>
</ol>
</li>
</ol>
</li>

<li>
<h4 className="mb-2 font-bold">Question 6</h4>
<ol className="flex list-[lower-alpha] flex-col gap-2">
<li>
State the first and second laws of thermochemistry{" "}
<strong className="whitespace-nowrap">(4 marks)</strong>
<Answers questionNumber="6a" />
</li>
<li>
Calculate the pressure exerted by 1 mole of water in 20L at 27
<sup>&deg;</sup>C using:
<ol className="mx-4 list-[lower-alpha]">
<li>the ideal gas law</li>
<li>
van der Waals equation (Values for van der Waals constants{" "}
<strong>a</strong> and <strong>b</strong> for water vapour are
5.464 L<sup>2</sup>
atm.mol<sup>-2</sup> and 0.03049 Lmole<sup>-1</sup>{" "}
respectively)
</li>
</ol>{" "}
<strong className="whitespace-nowrap">(4.5 marks)</strong>
<Answers questionNumber="6b" />
</li>
<li>
Give two reasons why gases deviate from ideal behavior particularly
at low temperatures and high pressures{" "}
<strong className="whitespace-nowrap">(3 marks)</strong>
<Answers questionNumber="6c" />
</li>
<li>
Complete the following nuclear reactions equation
<ol className="mx-4 list-[lower-roman]">
<li>
<sup>22</sup>
<sub>11</sub>Na + <sup>4</sup>
<sub>2</sub>He &rarr; <sup>26</sup>
<sub>12</sub>Mg + ?{" "}
<strong className="whitespace-nowrap">(1.5 marks)</strong>
<Answers questionNumber="6di" />
</li>
<li>
<sup>222</sup>
<sub>86</sub>Rn &rarr; ? + <sup>26</sup>
<sub>12</sub>He{" "}
<strong className="whitespace-nowrap">(1.5 marks)</strong>
<Answers questionNumber="6dii" />
</li>
<li>
<sup>131</sup>
<sub>53</sub>I &rarr; ? + <sup>0</sup>
<sub>-1</sub>e{" "}
<strong className="whitespace-nowrap">(1.5 marks)</strong>
<Answers questionNumber="6diii" />
</li>
<li>
<sup>22</sup>
<sub>11</sub>Cl + <sup>1</sup>
<sub>0</sub>n &rarr; <sup>1</sup>
<sub>1</sub>H + ?{" "}
<strong className="whitespace-nowrap">(1.5 marks)</strong>
<Answers questionNumber="6div" />
</li>
</ol>
</li>
</ol>
</li>
</Questions>
);
}
14 changes: 14 additions & 0 deletions src/app/past-questions-archive/wdu/basicinduschem/2022_2023/100-level/1st-semester/page.jsx
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import LinkList from "@/components/LinkList";

const courses = {
"": [
{
name: "CHM 101 - General Chemistry I",
route: "1st-semester/chm101",
},
],
};

export default function _1st_semester() {
return <LinkList items={courses} isOrdered={true} />;
}
9 changes: 9 additions & 0 deletions src/app/past-questions-archive/wdu/basicinduschem/2022_2023/100-level/page.jsx
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import LinkList from "@/components/LinkList";

const semesters = {
"": [{ name: "1st Semester", route: "100-level/1st-semester" }],
};

export default function _100_level() {
return <LinkList items={semesters} isOrdered={true} />;
}
5 changes: 4 additions & 1 deletion src/app/past-questions-archive/wdu/basicinduschem/2022_2023/page.jsx
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import LinkList from "@/components/LinkList";

const levels = {
"": [{ name: "300 Level", route: "2022_2023/300-level" }],
"": [
{ name: "100 Level", route: "2022_2023/100-level" },
{ name: "300 Level", route: "2022_2023/300-level" },
],
};

export default function _2022_2023() {
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