(Solved): Examination Guidelines and rules: - Exam Time: 60min, with six pages including 20 multiple-choice ...

Examination Guidelines and rules: - Exam Time: $$60\min$$, with six pages including 20 multiple-choice and two short-answer based - Wearing of masks is a must, you will not be entered the exam without it. - In case of not following Defense order $$\$35$$, No student is allowed to submit his exam. - Your cell phone must be turned off. It is forbidden to use the calculator app within - Put your Student ID over your bench in order to avoid any complications. - You are allowed to use the calculator but not to Share it with others. PUT THE SIGN "X" OVER THE CORRECT ALPHABET IN THE ANSWER SHEET. IF NOT ASSIGNED, LOSS OF FIVE GRADES IS A PENALTY FOR NOT FOLLOWING ORDERS Question ONE: Answer the following questions, and transfer your assignments to the answer sheet (Page 1 of 6 ) (20 Points) Q1. The ferric chloride $$\left({\mathrm{FeCl}}_3\right)$$ solution is used as a positive test for: a. Alcohols b. Phenols c. Carboxylic Acids d. Alkyl halides c. Alkenes Q2. What should you do if you spill sulfuric acid on your clothes? a. Wash it with cold water only b. Wash it with cold water and then neutralize with ammonium hydroxide solution c. Neutralize immediately with ammonium hydroxide solution d. Wash it with cold water and then neutralize with acetic acid solution e. Wash it with acetic acid solution only Q3. The advantage of steam distillation is that it allows the distillation of a. Water soluble compounds that have a high boiling point b. Water insoluble compounds that have no boiling point c. Water insoluble compounds that decomposes at their normal boiling points d. Water soluble compounds that have a lower boiling point e. Ionic compounds Q4. When the condenser is attached to the round-bottomed flask in a vertical position, this technique is called: a. simple distillation b. fractional distillation c. vacuum distillation d. reflux c. extraction Q5. Which of the following is the most reactive towards $${\mathrm{Br}}_2/$$ acetic acid b. c. d. Q6. When benzoic acid is mixed with wood, what happens to the melting point of the sample? a. Increases b. Decreases c. Stays the same d. Increases above the actual melting point, then decreases e. None of the above Q7. In the nitration of bromobenzene experiment, a mixture of nitric and sulfuric acids produces a. $${\mathrm{HSO}}_4^{?}$$ b. $${\mathrm{NO}}_2^{+}$$ c. $${\mathrm{NO}}_2=$$ d. $${\mathrm{NO}}_3{}^{+}$$ e. $${\mathrm{SO}}_4^2$$ Q8. Which is the proper way to heat a flammable solvent in a recrystallization experiment? a. Using a Bunsen bumer inside the fume hood b. Using a hot water bath c. Using a Bunsen burner with the container tightly closed d. Using a small flame e. None of the above Q9. Which statement is true regarding the $${\mathrm{R}}_{\text{fvalue in adsorption mechanism }}$$ a. The more polar the substance the higher is the $${\mathrm{R}}_{\text{rvalue }}$$ b. The $$R_T$$-value increases as the activity of adsorbant is increased c. The more polar the eluent used the higher will be the $$R_r$$ value d. Revalue depends only on the structure of the substance e. None of the above Q10. Sulfuric acid $$\left({\mathrm{H}}_2{\mathrm{SO}}_4\right)$$ was used (not $$\mathrm{HX}$$ ) in the dehydration of alcohols due to: a. The bisulfate anion $$\left({\mathrm{HSO}}_4\right)$$ is a poor nucleophile b. Protonation c. Water is a good leaving group d. Avoid the formation of alkyl halide e. All of the above Q11. Complete the equation by filling the product from one of the following