FREE AND STUDY GAMES ABOUT LAB ACTIVITIES EXAM

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FREE AND STUDY GAMES ABOUT LAB ACTIVITIES EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -222 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Those that have the benzene ring in their structure

Answer:

Aromatic hydrocarbons Question 2: What is the expected color when Baeyer's reagent is added to benzene?

Answer:

Purple

Question 3: The Iodoform text is a test for what class or classes of alcohol/s?

Answer:

Secondary alcohols

Question 4: Who is Sir James Young Simpson

Answer:

A prominent obstetrician and professor of medicine and midwifery in Edinburgh

Question 5: What organic liquid does not form a violet color or reacts positively after treatment with ferric acid?

Answer:

Phenol

Question 6: What is the predominant element present in all organic compounds?

Answer:

Carbon Question 7: What is produced when sodium bicarbonate is added to acetic acid, formic acid, salicylic acid, and benzoic acid?

Answer:

Bubbles

Question 8: What type of reaction is indicated by the production of HBr?

Answer:

Substitution Reaction Question 9: True or False: Low molecular weight carboxylic acids have powerful sour odor

Answer:

True Question 10: What is the color produced when Millon's reagent is added to resorcinol

Answer:

Flesh Precipitate

Question 11: Which of the following is NOT combustible?

• ethanol
• chloroform
• benzene
• phenol

Answer:

• chloroform

Question 12: This is an amine that is physiologically toxic substance which can easily absorbed thru the skin and affects the blood and the nervous system

Answer:

Aniline Question 13: True or False: Rubbing alcohol is insoluble in water

Answer:

False

Question 14: What are the product of a Lucas' test?

Answer:

alkyl halide and water Question 15: These are the nitrogen derivatives of carboxylic acid, having a carbonyl carbon attached to the amine group.

Answer:

Amides

Question 16: This is an indirect test for methanol

Answer:

Resorcinol Test

Question 17: What is the taste of salt and sugar before heating?

Answer:

Salt is salty; Sugar is sweet

Question 18: What is the composition of Fehling's B?

Answer:

Potassium sodium tartrate and strong alkali

Question 19: Suppose 4 test tube containing 1 mL of formaldehyde, benzaldehyde,

acetaldehyde and acetone is mixed with 2 mL of Fehling's reagent and then heated in a water bath for 5 - 10 minutes. What is the positive result for this test?

Answer:

Formation of brick red precipitate

Question 20: What is the color produced when Millon's reagent is added to salicylic acid

Answer:

Flesh Precipitate

Question 21: What is the composition of Fehling's A?

Answer:

Copper (II) sulfate Question 22: Supposing 4 test tubes contain formaldehyde, benzaldehyde, acetaldehyde and acetone and tollen's reagent is added in each tube. Which will give a positive result?

Answer:

All except acetone

Question 23: What is the product formed when tert-butyl alcohol is oxidized?

Answer:

No reaction

Question 24: What is the odor for isoamyl isovalerate?

Answer:

Apple

Question 25: What is the odor for ethyl acetate?

Answer:

Fruity odor (grape)

Question 26: What test in activity 5 is especially designed for ketones?

Answer:

Legal's Test Question 27: Which of the following best describes a substance if it loses its original properties after heating?

• Neither of the choices
• Both choices are correct
• Unstable towards heat